Intraspecific genetic variance and gene flow can support the adaptive evolution of species challenged by climate shifts or novel environmental conditions.Less well understood is how genome organization and gene flow i...Intraspecific genetic variance and gene flow can support the adaptive evolution of species challenged by climate shifts or novel environmental conditions.Less well understood is how genome organization and gene flow interact in closely related species during evolutionary divergence and differentiation.Here we conducted genomic footprint analyses to determine how three species of Pterocarya(P.stenoptera,P.hupehensis,and P.macroptera),which are sympatric but occupy different elevational niches,adapted to the heterogeneous environment of the Qinling-Daba Mountains,China.We identified candidate genes for environmental adaptation(i.e.,PIEZO1,WRKY39,VDAC3,CBL1,and RAF),and also identified regions of gene introgression between P.hupehensis and P.macroptera that show lower genetic load and higher genetic diversity than the rest of their genomes.The same introgressed regions are notably situated in areas of minimal genetic divergence yet they are characterized by elevated recombination rates.We also identified candidate genes within these introgressed regions related to environmental adaptation(TPLC2,CYCH;1,LUH,bHLH112,GLX1,TLP-3,and ABC1).Our findings have thus clarified the important role of gene flow in ecological adaptation and revealed genomic signatures of past introgression.Together,these findings provide a stronger theoretical basis for understanding the ecological adaptation and conservation of Quaternary relict woody plants in East Asia.展开更多
Background Long-term natural and artificial selection has resulted in many genetic footprints within the genomes of pig breeds across distinct agroecological zones.Nevertheless,the mechanisms by which these signatures...Background Long-term natural and artificial selection has resulted in many genetic footprints within the genomes of pig breeds across distinct agroecological zones.Nevertheless,the mechanisms by which these signatures contribute to phenotypic diversity and facilitate environmental adaptation remain unclear.Results Here,we leveraged whole-genome sequencing data from 82 individuals from 6 domestic pig breeds originating in tropical,high-altitude,and frigid regions.Population genetic analysis suggested that habitat isolation significantly shaped the genetic diversity and contributed to population stratification in local Chinese pig breeds.Analysis of selection signals revealed regions under selection for adaptation in tropical(55.5 Mb),high-altitude(43.6 Mb),and frigid(17.72 Mb)regions.The potential functions of the selective sweep regions were linked to certain complex traits that might play critical roles in different geographic environments,including fat coverage in frigid environments and blood indicators in tropical and high-altitude environments.Candidate genes under selection were significantly enriched in biological pathways involved in environmental adaptation.These pathways included blood circulation,protein degradation,and inflammation for adaptation to tropical environments;heart and lung development,hypoxia response,and DNA damage repair for high-altitude adaptation;and thermogenesis,cold-induced vasodilation(CIVD),and the cell cycle for adaptation to frigid environments.By examining the chromatin state of the selection signatures,we identified the lung and ileum as two candidate functional tissues for environmental adaptation.Finally,we identified a mutation(chr1:G246,175,129A)in the cis-regulatory region of ABCA1 as a plausible promising variant for adaptation to tropical environments.Conclusions In this study,we conducted a genome-wide exploration of the genetic mechanisms underlying the adaptability of local Chinese pig breeds to tropical,high-altitude,and frigid environments.Our findings shed light on the prominent role of cis-regulatory elements in environmental adaptation in pigs and may serve as a valuable biological model of human plateau-related disorders and cardiovascular diseases.展开更多
The paleoenvironmental changes and adaptation strategies of hominins during the Late Pleistocene are crucial for understanding the evolution,dispersal,and behavioral shifts of early modern humans.Despite South China&#...The paleoenvironmental changes and adaptation strategies of hominins during the Late Pleistocene are crucial for understanding the evolution,dispersal,and behavioral shifts of early modern humans.Despite South China's significance as a nexus for hominin dispersal and handaxe technology diffusion,quantitative reconstructions of paleoenvironments linked to archaeological records remain scarce.The Sandinggai site(96.6-13.3 ka BP)in central South China,with its well-preserved stratigraphy and abundant lithic artefacts,is notable for providing valuable insights.In this study,quantitative reconstruction of the vegetation succession and climate change sequences at the site was conducted using palynological and isotopic data.The results indicated a shift from a warm-temperate evergreen and deciduous broadleaf mixed forest to a temperate deciduous broadleaf forest,with the climate transitioning from warm and humid to cooler and drier conditions.During the early phase,an increase in lithic production suggested favorable conditions for hominin survival.In the later phase,decreased lithic production and the replacement of large handaxe tools by smaller flake tools,indicated that hominins adapted to the cooler,drier climate and more open landscapes through lithic miniaturization.These findings highlight the environment-driven adaptation of lithic technology and hominin behavior,thereby shedding light on human survival adaptation strategies.展开更多
The environments of tropical and subtropical coral reef regions(CRR)differ from each other;however,it is not known if these environmental differences influence coral polyp and skeleton microbiome composition.In this s...The environments of tropical and subtropical coral reef regions(CRR)differ from each other;however,it is not known if these environmental differences influence coral polyp and skeleton microbiome composition.In this study,Coelastrea palauensis corals were collected from tropical and subtropical CRR in the South China Sea,and bacterial,archaeal,and fungal communities in polyps and skeletons were analyzed.Results showed that the microbial diversity and composition of C.palauensis significantly differed between the polyps and skeletons,and between the tropical and subtropical CRR.Regarding bacteria associated with corals,C.palauensis was mainly associated with bacteria closely related to the nitrogen cycle in the subtropical CRR.The relative abundances of Terasakiellaceae and Chlorobium in both coral polyps and skeletons in the subtropical CRR were higher than those in the tropical CRR.In the tropical CRR,C.palauensis was mainly associated with opportunistic pathogenic bacteria.The relative abundances of Tenacibaculum and Vibrio in coral polyps and skeletons in the tropical CRR were higher than those in the subtropical CRR.Regarding archaea associated with corals,polyps and skeletons of C.palauensis in both tropical and subtropical reef areas were dominated by n_Woesearchaeales,and the relative abundance of n_Woesearchaeales in skeletons is significantly higher than that in polyps.In addition,the relative abundances of n_Woesearchaeales in polyps and skeletons in the subtropical CRR were significantly higher than those in the tropical CRR.Regarding fungi associated with corals,Ascomycota was dominant in polyps and skeletons in the subtropical CRR,while Sordariomycetes,Periconia,Cladosporium,and Aspergillus were dominant in polyps and skeletons in the tropical CRR.Besides,the diversity differences of coral-associated microorganisms were related to environmental factors such as nutrients and temperature that may affect the survival of coral-associated microorganisms.These results implied that corals may adjust the composition of microorganisms,conducive the coral holobiont to better adapting the environment.Our research will be beneficial in understanding the differences and adaptations of coral polyp and skeletal microbiome.展开更多
Aqueous zinc-ion batteries are promising candidates as stationary storage systems for power-grid applications due to their high safety and low cost.The practical implementation of Zn-ion batteries currently still face...Aqueous zinc-ion batteries are promising candidates as stationary storage systems for power-grid applications due to their high safety and low cost.The practical implementation of Zn-ion batteries currently still faces formidable challenges because of Zn dendrite growth,hydrogen evolution,and inadequate environmental adaptability.Herein,to address these challenges,a strategy of regulation of water molecules coordination in electrolyte is proposed via developing a cross-linked hydrophilic hydrogel polymer electrolyte.Within this system,the continuous hydrogen bond among H_(2)O molecules is disrupted and the isolated H_(2)O molecules are strongly bound with a polymeric matrix comprised of polyacrylamide,carboxymethyl cellulose,and ethylene glycol,which can restrain the activity of H_(2)O molecules,thus effectively alleviating Zn dendrite growth and hydrogen evolution and enhancing the anti-freezing ability.With this electrolyte,the Zn||Cu cell presents a high coulombic efficiency of 99.4%over 900 cycles and Zn||Zn symmetric cell exhibits high cycling stability,maintaining plating/stripping for over 1,700 h.Moreover,the assembled Zn||PANI device also demonstrates outstanding electrochemical performance over a wide-temperature range,including a long cycling life over 14,120 cycles at room temperature and an ultralong cycling surpassing 30,000 cycles even at−40℃.This showcases the manipulation of water coordination chemistry for advanced,highly adaptable batteries.展开更多
This study investigates the diurnal patterns of nectar secretion,sugar content,and caloric value in Epimedium wushanense,and their interaction mechanisms with pollinator behavior under varying environmental conditions...This study investigates the diurnal patterns of nectar secretion,sugar content,and caloric value in Epimedium wushanense,and their interaction mechanisms with pollinator behavior under varying environmental conditions.Nectar secretion exhibited a diurnal pattern,peaking between 11:00 and 13:00,with progressive increases in both volumes(19.07±1.66μL/day)and caloric value(6.03±0.55 cal/day)over four consecutive days,culminating in maximal production on Day 4(p<0.05).Floral bagging significantly altered nectar traits(Mann-Whitney U test,p<0.05),with bagged inflorescences demonstrating 61.82%higher nectar volume productivity relative to unbagged controls.Pollinator visitation,primarily by Bombus trifasciatus and Bombus grahami,was strongly correlated with nectar sugar concentration and distribution,peaking during midday when temperatures and humidity were optimal.Notably,B.trifasciatus displayed legitimate pollination behavior,while B.grahami exhibited nectar robbing.Bombus grahami peaked at 15:00(7.67±0.33 visits)under 22.8°C/58%RH,outperforming Bombus trifasciatus(5.67±0.27 at 13:00;p<0.05),highlighting differential pollinator effectiveness.Temperature negatively impacted unbagged nectar volume and caloric value but positively influenced bagged nectar,suggesting adaptive resource allocation strategies.These findings underscore the intricate relationship between environmental factors,nectar dynamics,and pollinator behavior,revealing how E.wushanense optimizes reproductive success through temporal and ecological adaptations.This study provides critical insights into the ecological mechanisms driving plant-pollinator interactions and resource allocation in changing environments.展开更多
Metamaterials with artificial designability and perfect absorption provide a novel design method for the manipulation and attenuation of microwaves.However,owing to the limitations of meta-atomic reso-nance effect and...Metamaterials with artificial designability and perfect absorption provide a novel design method for the manipulation and attenuation of microwaves.However,owing to the limitations of meta-atomic reso-nance effect and the lossless medium,it is difficult to achieve effective microwave absorption in a broad-band frequency range.Hence,an ultra-wideband metamaterial absorber(UWMA)composed of two mag-netic media and a metasurface was designed,and the absorption bandwidth of 2.9 to 18 GHz for 90%absorptivity under normal incidence was achieved,covering almost the entire S,C,X,and Ku bands.Through detailed investigation of equivalent circuit,equivalent medium theory,electromagnetic field dis-tribution and front-back interface interference,the internal physical working mechanism was clarified essentially.In addition,the multi-environment adaptabilities of the proposed absorber,including polariza-tion sensitivity,large angle incidence,dual-station radar stealth,bearing capacity and corrosion resistance,were analyzed.The proposed metamaterial absorber presents an effective way to achieve ultra-wideband absorption and compatibility with environmental adaptability,and provides a new way of thinking for intelligent full-band stealth technology.展开更多
Over the past 50 years, the Green Revolution and exploitation of heterosis have allowed cereal grain yield to keep pace with world- wide population growth. Unfortunately, plant growth and crop productivity are heavily...Over the past 50 years, the Green Revolution and exploitation of heterosis have allowed cereal grain yield to keep pace with world- wide population growth. Unfortunately, plant growth and crop productivity are heavily dependent on the application of synthetic fertilizers.展开更多
Manganese superoxide dismutase(MnSOD)is an antioxidant that exists in mitochondria and can effectively remove superoxide anions in mitochondria.In a dark,high-pressure,and low-temperature deep-sea environment,MnSOD is...Manganese superoxide dismutase(MnSOD)is an antioxidant that exists in mitochondria and can effectively remove superoxide anions in mitochondria.In a dark,high-pressure,and low-temperature deep-sea environment,MnSOD is essential for the survival of sea cucumbers.Six MnSODs were identified from the transcriptomes of deep and shallow-sea sea cucumbers.To explore their environmental adaptation mechanism,we conducted environmental selection pressure analysis through the branching site model of PAML software.We obtained night positive selection sites,and two of them were significant(97F→H,134K→V):97F→H located in a highly conservative characteristic sequence,and its polarity c hange might have a great impact on the function of MnSOD;134K→V had a change in piezophilic a bility,which might help MnSOD adapt to the environment of high hydrostatic pressure in the deepsea.To further study the effect of these two positive selection sites on MnSOD,we predicted the point mutations of F97H and K134V on shallow-sea sea cucumber by using MAESTROweb and PyMOL.Results show that 97F→H,134K→V might improve MnSOD’s efficiency of scavenging superoxide a nion and its ability to resist high hydrostatic pressure by moderately reducing its stability.The above results indicated that MnSODs of deep-sea sea cucumber adapted to deep-sea environments through their amino acid changes in polarity,piezophilic behavior,and local stability.This study revealed the correlation between MnSOD and extreme environment,and will help improve our understanding of the organism’s adaptation mechanisms in deep sea.展开更多
Dear Editor,Salix(willows)and Populus(poplars),the dominant genera of the Salicaceae family,are commercially important trees used for wood production and for creating artificial plantations aimed at stemming desertifi...Dear Editor,Salix(willows)and Populus(poplars),the dominant genera of the Salicaceae family,are commercially important trees used for wood production and for creating artificial plantations aimed at stemming desertification and high-yield bioenergy production(Teraminami et al.,2013).The willow Salix cheilophila,a dominant species in Xizang,has become a major focus of research due to its key role in the greening efforts of the Mu Us Desert.S.cheilophila is ecologically adaptable and has a widespread distribution from high to low altitudes,making it an ideal subject for investigating the evolutionary signatures driving environmental adaptation.展开更多
CRISPR/Cas9-based gene editing research has advanced greatly and shows broad potential for practical application in life sciences,but the Cas9 system is often constrained by the requirement of a protospacer adjacent m...CRISPR/Cas9-based gene editing research has advanced greatly and shows broad potential for practical application in life sciences,but the Cas9 system is often constrained by the requirement of a protospacer adjacent motif(PAM)at the target site.While xCas9,a variant derived from Streptococcus pyogenes Cas9(SpCas9),can recognize a broader range of PAMs,its application in non-model insects is lacking.In this study,we explored xCas9 activity in gene editing by selecting corazonin(Crz)and the target sites with various PAMs in Locusta migratoria,a destructive insect pest worldwide.We found that xCas9 could cleave the target site with AG PAM while SpCas9 could not,although xCas9 appeared to have lower activity than SpCas9 at the canonical NGG PAMs.The heritable homozygous Crz^(-/-)locust strain was generated by the application of xCas9.The Crz^(-/-)strain showed an albino body color,with significantly downregulated expression of several body color-related genes including Pale,Vermilion,Cinnabar,White andβ-carotene-binding protein.In addition,Crz^(-/-)mutants exhibited significantly reduced expression of Chitin synthase 1,along with a markedly lower chitin content as well as compact and rigid cuticles.Furthermore,Crz^(-/-)mutants displayed impaired performance under low-temperature stress,including prolonged lifespan,reduced body weight and smaller body size.Our results suggest that xCas9 is effective for insect genome editing,and Crz plays essential roles in insect body color,cuticle development and adaptation to low-temperature stress.The findings of this study extend the application of xCas9 in non-model insects and provide new insights into our understanding of the regulation of insect cuticle development and environmental adaptation.展开更多
Dear Editor,Brassica juncea(AABB,2n=4X=36)is an important allotetraploid oilseed crop comprising varieties utilized for their seeds,leaves,roots,and stems(Yang et al.,2016).A landrace of B.juncea,B.juncea var.“Shaanb...Dear Editor,Brassica juncea(AABB,2n=4X=36)is an important allotetraploid oilseed crop comprising varieties utilized for their seeds,leaves,roots,and stems(Yang et al.,2016).A landrace of B.juncea,B.juncea var.“Shaanbei Huangjie”(HJ),is widely cultivated as a seed mustard in the Loess Plateau of Northern Shaanxi.展开更多
Coral gardening has become a promising technique for restoring reefs worldwide in the Anthropocene era.The microbiome plays an important role in enhancing adaptive resilience in situ nursery propagation of corals.Howe...Coral gardening has become a promising technique for restoring reefs worldwide in the Anthropocene era.The microbiome plays an important role in enhancing adaptive resilience in situ nursery propagation of corals.However,little is known about the response patterns of bacterial community dynamics,co-occurrence networks and assembly processes of different species in coral restoration nurseries over time.Here,we collected two Acropora coral samples from transplanted fragments and source colonies at 1-month and 3-month post-transplantation(May and July 2022)in an upwelling-affected fragmented reef.Full-length 16S rRNA gene sequencing revealed that bacterial communities of coral fragments in nurseries exhibited consistent temporal shifts compared to those of the source colonies.High host specificity was observed in the bacterial community and network structure associated with source colonies.In contrast,for the two coral species within nurseries,there were no differences in bacterial diversity,composition and core microbiome.Stochastic assembly processes were identified as the primary drivers of bacterial communities in all May samples,whereas deterministic processes played a more prominent role in July.Seawater properties(e.g.,temperature and ammonium concentration)partially explained the compositional changes in the bacterial communities of these coral samples.Our findings suggested that coral nurseries contributed to the homogenization of bacterial communities in different Acropora corals,despite the apparent temporal dynamics of bacteria.These results enhance our understanding of the coral microbiome,ecological interactions and assembly principles in different host within in situ nurseries.展开更多
Heterotrimeric G protein serves as a central hub in plant signal transduction,playing a pivotal role in integrating endogenous developmental signals and external environmental cues.While significant advances have been...Heterotrimeric G protein serves as a central hub in plant signal transduction,playing a pivotal role in integrating endogenous developmental signals and external environmental cues.While significant advances have been made in understanding G protein signaling mechanisms in model plants such as Arabidopsis and major crops like rice and maize,the precise regulatory roles in growth,development,and adaptation in horticultural crops are still poorly understood.In this review,we systematically summarize recent advances in uncovering both conserved and species-specific regulatory mechanisms of G protein signaling across diverse plant species.We also highlight key discoveries on the crosstalk between G protein-mediated pathways and other signaling cascades,such as hormone signaling,transcriptional regulation,and stress response networks.Finally,we discuss the potential applications of G protein signaling research in future crop improvement,offering new perspectives for advancing sustainable horticultural production.展开更多
ing electrons from BPA molecules,the N-CNTs/PDS system effectively minimised oxidant wastage and mitigated the risk of secondary pollution,ensuring efficient utilisation of active sites on N-CNTs and sustaining a high...ing electrons from BPA molecules,the N-CNTs/PDS system effectively minimised oxidant wastage and mitigated the risk of secondary pollution,ensuring efficient utilisation of active sites on N-CNTs and sustaining a high catalytic rate.The formation of the N-CNTs-PDS*complex significantly enhanced BPA degradation and mineralisation,thereby optimising PDS consumption.These findings highlight the unparalleled advantages of the N-CNTs/PDS system in managing complex wastewater,offering a promising and innovative solution for treating complex industrial wastewater and advancing environmental remediation efforts.展开更多
The performance breakthroughs of some stealth materials have benefited from incorporating biomimetic concepts,and the design ideas of wave-absorbing metamaterials have been greatly broadened.How-ever,stealth materials...The performance breakthroughs of some stealth materials have benefited from incorporating biomimetic concepts,and the design ideas of wave-absorbing metamaterials have been greatly broadened.How-ever,stealth materials developed based on a single biological structure still have limitations regarding overall performance and design freedom.Herein,a dual-structure element combination model with a butterfly-wing porous structure and moth-eye raised structure arranged in an orderly manner is estab-lished.Carbonyl iron and polyurethane are mixed as wave absorbents,and the model is utilized to make a biomimetic metamaterial(CSMA),which has an absorption rate of more than 90%at 6.07-18 GHz,achieving broadband effective absorption.It has been verified that the two biostructures designed after an ordered arrangement show synergistic effects in the combined model,and the cooperation between the structures induces the formation of current vector vortices,which are able to induce microwave losses to broaden the effective absorbing bandwidth.Further,the model has the combined application performance of polarization insensitivity,strong stability of oblique incidence,and low bistatic RCS.Such a thought based on the combination of multiple components provides an effective strategy for the design of broadband-absorbing metamaterials.展开更多
Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives,the ubiquitous use of electronics comes at the expense of increased exposure to electromagne...Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives,the ubiquitous use of electronics comes at the expense of increased exposure to electromagnetic(EM)radiation.Up to date,extensive efforts have been made to develop high-performance EM absorbers based on synthetic materials.However,the design of an EM absorber with both exceptional EM dissipation ability and good environmental adaptability remains a substantial challenge.Here,we report the design of a class of carbon heterostructures via hierarchical assembly of graphitized lignocellulose derived from bamboo.Specifically,the assemblies of nanofibers and nanosheets behave as a nanometer-sized antenna,which results in an enhancement of the conductive loss.In addition,we show that the composition of cellulose and lignin in the precursor significantly influences the shape of the assembly and the formation of covalent bonds,which affect the dielectric response-ability and the surface hydrophobicity(the apparent contact angle of water can reach 135°).Finally,we demonstrate that the obtained carbon heterostructure maintains its wideband EM absorption with an effective absorption frequency ranging from 12.5 to 16.7 GHz under conditions that simulate the real-world environment,including exposure to rainwater with slightly acidic/alkaline pH values.Overall,the advances reported in this work provide new design principles for the synthesis of high-performance EM absorbers that can find practical applications in real-world environments.展开更多
Based on specimens collected in Yinggehai, Hainan, China from 2013 to 2016, a stable epiphytic taxon is found on the surface of the individual of marine green alga Cladophora aokii Yamada. According to the morphologic...Based on specimens collected in Yinggehai, Hainan, China from 2013 to 2016, a stable epiphytic taxon is found on the surface of the individual of marine green alga Cladophora aokii Yamada. According to the morphological characteristics, the taxonomy of Cl. aokii and its epiphytes is carried out. There are some epiphytes attached on Cl. aokii Yamada including Cl. fascicularis （Mertens ex C. Agardh） Kfitzing, Chaetomorpha pachynerna （Montagne） Kiitzing, Cerarniurn carnouii Dawson, Licmophora abbreviata Agardh, Lyngbya sp. and Chattonella sp.. The formation of the individual of Cl. aokii is dissected and explained, which can help to analyze the adaption in details among this species, its epiphytes and native marine environment. The results reveal the marine macroepiphytic taxonomy in Ha/nan, China, and preliminarily explain the adaptive relationship between macroalgae and environment.展开更多
Visual odometry is critical in visual simultaneous localization and mapping for robot navigation.However,the pose estimation performance of most current visual odometry algorithms degrades in scenes with unevenly dist...Visual odometry is critical in visual simultaneous localization and mapping for robot navigation.However,the pose estimation performance of most current visual odometry algorithms degrades in scenes with unevenly distributed features because dense features occupy excessive weight.Herein,a new human visual attention mechanism for point-and-line stereo visual odometry,which is called point-line-weight-mechanism visual odometry(PLWM-VO),is proposed to describe scene features in a global and balanced manner.A weight-adaptive model based on region partition and region growth is generated for the human visual attention mechanism,where sufficient attention is assigned to position-distinctive objects(sparse features in the environment).Furthermore,the sum of absolute differences algorithm is used to improve the accuracy of initialization for line features.Compared with the state-of-the-art method(ORB-VO),PLWM-VO show a 36.79%reduction in the absolute trajectory error on the Kitti and Euroc datasets.Although the time consumption of PLWM-VO is higher than that of ORB-VO,online test results indicate that PLWM-VO satisfies the real-time demand.The proposed algorithm not only significantly promotes the environmental adaptability of visual odometry,but also quantitatively demonstrates the superiority of the human visual attention mechanism.展开更多
基金supported by the National Natural Science Foundation of China(32370386,32070372,and 32200295)Science Foundation for Distinguished Young Scholars of Shaanxi Province(2023-JC-JQ-22)+4 种基金Basic Research Project of Shaanxi Academy of Fundamental Science(22JHZ005)Shaanxi Key Research and Development Program(2024NC-YBXM-064)Science and Technology Program of Shaanxi Academy of Science(2023K-49,2023K-26,and 2019K-06)Shaanxi Forestry Science and Technology Innovation Key Project(SXLK2023-02-20)Qinling Hundred Talents Project of Shaanxi Academy of Science(Y23Z619F17).
文摘Intraspecific genetic variance and gene flow can support the adaptive evolution of species challenged by climate shifts or novel environmental conditions.Less well understood is how genome organization and gene flow interact in closely related species during evolutionary divergence and differentiation.Here we conducted genomic footprint analyses to determine how three species of Pterocarya(P.stenoptera,P.hupehensis,and P.macroptera),which are sympatric but occupy different elevational niches,adapted to the heterogeneous environment of the Qinling-Daba Mountains,China.We identified candidate genes for environmental adaptation(i.e.,PIEZO1,WRKY39,VDAC3,CBL1,and RAF),and also identified regions of gene introgression between P.hupehensis and P.macroptera that show lower genetic load and higher genetic diversity than the rest of their genomes.The same introgressed regions are notably situated in areas of minimal genetic divergence yet they are characterized by elevated recombination rates.We also identified candidate genes within these introgressed regions related to environmental adaptation(TPLC2,CYCH;1,LUH,bHLH112,GLX1,TLP-3,and ABC1).Our findings have thus clarified the important role of gene flow in ecological adaptation and revealed genomic signatures of past introgression.Together,these findings provide a stronger theoretical basis for understanding the ecological adaptation and conservation of Quaternary relict woody plants in East Asia.
基金supported by the National Key Research and Development Program of China(2021YFF1000600)the National Natural Science Foundation of China(32002150 and U23A20229)+3 种基金the Basic and Applied Basic Research Foundation of Guangdong Province(2020B1515120053)the Shenzhen Science and Technology Innovation Commission(JCYJ20190813114401691)the Central Government Guiding Funds for Local Science and Technology Development of China(He-Ke ZY220603)the Open Project of Hainan Provincial Key Laboratory of Tropical Animal Reproduction&Breeding and Epidemic Disease Research(HKL2020101)。
文摘Background Long-term natural and artificial selection has resulted in many genetic footprints within the genomes of pig breeds across distinct agroecological zones.Nevertheless,the mechanisms by which these signatures contribute to phenotypic diversity and facilitate environmental adaptation remain unclear.Results Here,we leveraged whole-genome sequencing data from 82 individuals from 6 domestic pig breeds originating in tropical,high-altitude,and frigid regions.Population genetic analysis suggested that habitat isolation significantly shaped the genetic diversity and contributed to population stratification in local Chinese pig breeds.Analysis of selection signals revealed regions under selection for adaptation in tropical(55.5 Mb),high-altitude(43.6 Mb),and frigid(17.72 Mb)regions.The potential functions of the selective sweep regions were linked to certain complex traits that might play critical roles in different geographic environments,including fat coverage in frigid environments and blood indicators in tropical and high-altitude environments.Candidate genes under selection were significantly enriched in biological pathways involved in environmental adaptation.These pathways included blood circulation,protein degradation,and inflammation for adaptation to tropical environments;heart and lung development,hypoxia response,and DNA damage repair for high-altitude adaptation;and thermogenesis,cold-induced vasodilation(CIVD),and the cell cycle for adaptation to frigid environments.By examining the chromatin state of the selection signatures,we identified the lung and ileum as two candidate functional tissues for environmental adaptation.Finally,we identified a mutation(chr1:G246,175,129A)in the cis-regulatory region of ABCA1 as a plausible promising variant for adaptation to tropical environments.Conclusions In this study,we conducted a genome-wide exploration of the genetic mechanisms underlying the adaptability of local Chinese pig breeds to tropical,high-altitude,and frigid environments.Our findings shed light on the prominent role of cis-regulatory elements in environmental adaptation in pigs and may serve as a valuable biological model of human plateau-related disorders and cardiovascular diseases.
基金National Natural Science Foundation of China,No.42471185,No.T2192952National Key Research and Development Program of China,No.2022YFF0801502。
文摘The paleoenvironmental changes and adaptation strategies of hominins during the Late Pleistocene are crucial for understanding the evolution,dispersal,and behavioral shifts of early modern humans.Despite South China's significance as a nexus for hominin dispersal and handaxe technology diffusion,quantitative reconstructions of paleoenvironments linked to archaeological records remain scarce.The Sandinggai site(96.6-13.3 ka BP)in central South China,with its well-preserved stratigraphy and abundant lithic artefacts,is notable for providing valuable insights.In this study,quantitative reconstruction of the vegetation succession and climate change sequences at the site was conducted using palynological and isotopic data.The results indicated a shift from a warm-temperate evergreen and deciduous broadleaf mixed forest to a temperate deciduous broadleaf forest,with the climate transitioning from warm and humid to cooler and drier conditions.During the early phase,an increase in lithic production suggested favorable conditions for hominin survival.In the later phase,decreased lithic production and the replacement of large handaxe tools by smaller flake tools,indicated that hominins adapted to the cooler,drier climate and more open landscapes through lithic miniaturization.These findings highlight the environment-driven adaptation of lithic technology and hominin behavior,thereby shedding light on human survival adaptation strategies.
基金The National Natural Science Foundation of China under contract Nos 42206157,42030502,and 42090041the Natural Science Foundation of Guangxi Province under contract No.2022GXNSFBA035449the Self-Topic Project of Guangxi Laboratory on the Study of Coral Reefs in the South China Sea under contract No.GXLSCRSCS2022103.
文摘The environments of tropical and subtropical coral reef regions(CRR)differ from each other;however,it is not known if these environmental differences influence coral polyp and skeleton microbiome composition.In this study,Coelastrea palauensis corals were collected from tropical and subtropical CRR in the South China Sea,and bacterial,archaeal,and fungal communities in polyps and skeletons were analyzed.Results showed that the microbial diversity and composition of C.palauensis significantly differed between the polyps and skeletons,and between the tropical and subtropical CRR.Regarding bacteria associated with corals,C.palauensis was mainly associated with bacteria closely related to the nitrogen cycle in the subtropical CRR.The relative abundances of Terasakiellaceae and Chlorobium in both coral polyps and skeletons in the subtropical CRR were higher than those in the tropical CRR.In the tropical CRR,C.palauensis was mainly associated with opportunistic pathogenic bacteria.The relative abundances of Tenacibaculum and Vibrio in coral polyps and skeletons in the tropical CRR were higher than those in the subtropical CRR.Regarding archaea associated with corals,polyps and skeletons of C.palauensis in both tropical and subtropical reef areas were dominated by n_Woesearchaeales,and the relative abundance of n_Woesearchaeales in skeletons is significantly higher than that in polyps.In addition,the relative abundances of n_Woesearchaeales in polyps and skeletons in the subtropical CRR were significantly higher than those in the tropical CRR.Regarding fungi associated with corals,Ascomycota was dominant in polyps and skeletons in the subtropical CRR,while Sordariomycetes,Periconia,Cladosporium,and Aspergillus were dominant in polyps and skeletons in the tropical CRR.Besides,the diversity differences of coral-associated microorganisms were related to environmental factors such as nutrients and temperature that may affect the survival of coral-associated microorganisms.These results implied that corals may adjust the composition of microorganisms,conducive the coral holobiont to better adapting the environment.Our research will be beneficial in understanding the differences and adaptations of coral polyp and skeletal microbiome.
基金the financial support from Guangdong Basic and Applied Basic Research Foundation(Grant No.2025A1515012077)National Natural Science Foundation of China(No.52401296)+3 种基金the financial support by Guangdong Provincial Pearl River Talents Program(Grant No.2023CX10L019)Bureau of Science and Technology of Jiangmen Municipality(Grant No.2320002001062)And this work is also partly supported by Guangdong S&T Programme(No.2022B1212040001)Guangdong-Hong Kong-Macao joint Laboratory(No.2023B1212120003).
文摘Aqueous zinc-ion batteries are promising candidates as stationary storage systems for power-grid applications due to their high safety and low cost.The practical implementation of Zn-ion batteries currently still faces formidable challenges because of Zn dendrite growth,hydrogen evolution,and inadequate environmental adaptability.Herein,to address these challenges,a strategy of regulation of water molecules coordination in electrolyte is proposed via developing a cross-linked hydrophilic hydrogel polymer electrolyte.Within this system,the continuous hydrogen bond among H_(2)O molecules is disrupted and the isolated H_(2)O molecules are strongly bound with a polymeric matrix comprised of polyacrylamide,carboxymethyl cellulose,and ethylene glycol,which can restrain the activity of H_(2)O molecules,thus effectively alleviating Zn dendrite growth and hydrogen evolution and enhancing the anti-freezing ability.With this electrolyte,the Zn||Cu cell presents a high coulombic efficiency of 99.4%over 900 cycles and Zn||Zn symmetric cell exhibits high cycling stability,maintaining plating/stripping for over 1,700 h.Moreover,the assembled Zn||PANI device also demonstrates outstanding electrochemical performance over a wide-temperature range,including a long cycling life over 14,120 cycles at room temperature and an ultralong cycling surpassing 30,000 cycles even at−40℃.This showcases the manipulation of water coordination chemistry for advanced,highly adaptable batteries.
基金supported by Sichuan Science and Technology Program(No.2023NSFSC1282)Talent Foundation of China West Normal University(Nos.17YC142 and 17YC137)+1 种基金the National General Cultivation Project of China West Normal University(No.19B029)Youth Foundation Specialization of West China Normal University(No.22KB004).
文摘This study investigates the diurnal patterns of nectar secretion,sugar content,and caloric value in Epimedium wushanense,and their interaction mechanisms with pollinator behavior under varying environmental conditions.Nectar secretion exhibited a diurnal pattern,peaking between 11:00 and 13:00,with progressive increases in both volumes(19.07±1.66μL/day)and caloric value(6.03±0.55 cal/day)over four consecutive days,culminating in maximal production on Day 4(p<0.05).Floral bagging significantly altered nectar traits(Mann-Whitney U test,p<0.05),with bagged inflorescences demonstrating 61.82%higher nectar volume productivity relative to unbagged controls.Pollinator visitation,primarily by Bombus trifasciatus and Bombus grahami,was strongly correlated with nectar sugar concentration and distribution,peaking during midday when temperatures and humidity were optimal.Notably,B.trifasciatus displayed legitimate pollination behavior,while B.grahami exhibited nectar robbing.Bombus grahami peaked at 15:00(7.67±0.33 visits)under 22.8°C/58%RH,outperforming Bombus trifasciatus(5.67±0.27 at 13:00;p<0.05),highlighting differential pollinator effectiveness.Temperature negatively impacted unbagged nectar volume and caloric value but positively influenced bagged nectar,suggesting adaptive resource allocation strategies.These findings underscore the intricate relationship between environmental factors,nectar dynamics,and pollinator behavior,revealing how E.wushanense optimizes reproductive success through temporal and ecological adaptations.This study provides critical insights into the ecological mechanisms driving plant-pollinator interactions and resource allocation in changing environments.
基金National Natural Science Foundation of China(Nos.52103334,52071053,and U1704253)China Postdoctoral Science Foundation(Nos.2020M680946 and 2020M670748)+1 种基金Fundamental Research Funds for the Central Universities(No.DUT20GF111)Fundamental Research Funds of Shaanxi Key Laboratory of Artificially–Structured Functional Materials and Devices(No.AFMD–KFJJ–21102).
文摘Metamaterials with artificial designability and perfect absorption provide a novel design method for the manipulation and attenuation of microwaves.However,owing to the limitations of meta-atomic reso-nance effect and the lossless medium,it is difficult to achieve effective microwave absorption in a broad-band frequency range.Hence,an ultra-wideband metamaterial absorber(UWMA)composed of two mag-netic media and a metasurface was designed,and the absorption bandwidth of 2.9 to 18 GHz for 90%absorptivity under normal incidence was achieved,covering almost the entire S,C,X,and Ku bands.Through detailed investigation of equivalent circuit,equivalent medium theory,electromagnetic field dis-tribution and front-back interface interference,the internal physical working mechanism was clarified essentially.In addition,the multi-environment adaptabilities of the proposed absorber,including polariza-tion sensitivity,large angle incidence,dual-station radar stealth,bearing capacity and corrosion resistance,were analyzed.The proposed metamaterial absorber presents an effective way to achieve ultra-wideband absorption and compatibility with environmental adaptability,and provides a new way of thinking for intelligent full-band stealth technology.
文摘Over the past 50 years, the Green Revolution and exploitation of heterosis have allowed cereal grain yield to keep pace with world- wide population growth. Unfortunately, plant growth and crop productivity are heavily dependent on the application of synthetic fertilizers.
基金Supported by the Guangdong Province Basic and Applied Basic Research Fund Project(No.2020A1515110826)the National Natural Science Foundation of China(No.42006115)the Major Scientific and Technological Projects of Hainan Province(No.ZDKJ2021036)。
文摘Manganese superoxide dismutase(MnSOD)is an antioxidant that exists in mitochondria and can effectively remove superoxide anions in mitochondria.In a dark,high-pressure,and low-temperature deep-sea environment,MnSOD is essential for the survival of sea cucumbers.Six MnSODs were identified from the transcriptomes of deep and shallow-sea sea cucumbers.To explore their environmental adaptation mechanism,we conducted environmental selection pressure analysis through the branching site model of PAML software.We obtained night positive selection sites,and two of them were significant(97F→H,134K→V):97F→H located in a highly conservative characteristic sequence,and its polarity c hange might have a great impact on the function of MnSOD;134K→V had a change in piezophilic a bility,which might help MnSOD adapt to the environment of high hydrostatic pressure in the deepsea.To further study the effect of these two positive selection sites on MnSOD,we predicted the point mutations of F97H and K134V on shallow-sea sea cucumber by using MAESTROweb and PyMOL.Results show that 97F→H,134K→V might improve MnSOD’s efficiency of scavenging superoxide a nion and its ability to resist high hydrostatic pressure by moderately reducing its stability.The above results indicated that MnSODs of deep-sea sea cucumber adapted to deep-sea environments through their amino acid changes in polarity,piezophilic behavior,and local stability.This study revealed the correlation between MnSOD and extreme environment,and will help improve our understanding of the organism’s adaptation mechanisms in deep sea.
基金supported by STI 2030—Major Projects(no.2023ZD 0405602)the National Natural Science Foundation of China(32100256 to B.G.)+2 种基金the Third Xinjiang Scientific Expedition Program(2021xjkk0500)the National High-Level Young Talent Programs(2022000005 and 2022000243 to B.G.)the RUDN University Scientific Projects Grant System(no.040416-2-000).
文摘Dear Editor,Salix(willows)and Populus(poplars),the dominant genera of the Salicaceae family,are commercially important trees used for wood production and for creating artificial plantations aimed at stemming desertification and high-yield bioenergy production(Teraminami et al.,2013).The willow Salix cheilophila,a dominant species in Xizang,has become a major focus of research due to its key role in the greening efforts of the Mu Us Desert.S.cheilophila is ecologically adaptable and has a widespread distribution from high to low altitudes,making it an ideal subject for investigating the evolutionary signatures driving environmental adaptation.
基金supported by the Key Research and Development Project of Henan Province,China(221111112200)the National Natural Science Foundation of China(32070502 and 32072419)+1 种基金the Fundamental Research Program of Shanxi Province,China(202303021224005)the Natural Science Foundation of Henan Province,China(232300420185).
文摘CRISPR/Cas9-based gene editing research has advanced greatly and shows broad potential for practical application in life sciences,but the Cas9 system is often constrained by the requirement of a protospacer adjacent motif(PAM)at the target site.While xCas9,a variant derived from Streptococcus pyogenes Cas9(SpCas9),can recognize a broader range of PAMs,its application in non-model insects is lacking.In this study,we explored xCas9 activity in gene editing by selecting corazonin(Crz)and the target sites with various PAMs in Locusta migratoria,a destructive insect pest worldwide.We found that xCas9 could cleave the target site with AG PAM while SpCas9 could not,although xCas9 appeared to have lower activity than SpCas9 at the canonical NGG PAMs.The heritable homozygous Crz^(-/-)locust strain was generated by the application of xCas9.The Crz^(-/-)strain showed an albino body color,with significantly downregulated expression of several body color-related genes including Pale,Vermilion,Cinnabar,White andβ-carotene-binding protein.In addition,Crz^(-/-)mutants exhibited significantly reduced expression of Chitin synthase 1,along with a markedly lower chitin content as well as compact and rigid cuticles.Furthermore,Crz^(-/-)mutants displayed impaired performance under low-temperature stress,including prolonged lifespan,reduced body weight and smaller body size.Our results suggest that xCas9 is effective for insect genome editing,and Crz plays essential roles in insect body color,cuticle development and adaptation to low-temperature stress.The findings of this study extend the application of xCas9 in non-model insects and provide new insights into our understanding of the regulation of insect cuticle development and environmental adaptation.
基金supported by the National Natural Science Foundation of China(32370235 and 32441051)the Key R&D Program of Shaanxi Province(2024NC2-GJHX-17)+1 种基金Start-Up Funds of Northwest A&F University(Z1090224027)the Qinchuangyuan Innovation and Entrepreneurship Talent Project(QCYRCXM-2022-211).
文摘Dear Editor,Brassica juncea(AABB,2n=4X=36)is an important allotetraploid oilseed crop comprising varieties utilized for their seeds,leaves,roots,and stems(Yang et al.,2016).A landrace of B.juncea,B.juncea var.“Shaanbei Huangjie”(HJ),is widely cultivated as a seed mustard in the Loess Plateau of Northern Shaanxi.
基金The Innovative Talent Foundation of Hainan Province under contract No.KJRC2023C39the National Natural Science Foundation of China under contract Nos 42161144006 and 42076108.
文摘Coral gardening has become a promising technique for restoring reefs worldwide in the Anthropocene era.The microbiome plays an important role in enhancing adaptive resilience in situ nursery propagation of corals.However,little is known about the response patterns of bacterial community dynamics,co-occurrence networks and assembly processes of different species in coral restoration nurseries over time.Here,we collected two Acropora coral samples from transplanted fragments and source colonies at 1-month and 3-month post-transplantation(May and July 2022)in an upwelling-affected fragmented reef.Full-length 16S rRNA gene sequencing revealed that bacterial communities of coral fragments in nurseries exhibited consistent temporal shifts compared to those of the source colonies.High host specificity was observed in the bacterial community and network structure associated with source colonies.In contrast,for the two coral species within nurseries,there were no differences in bacterial diversity,composition and core microbiome.Stochastic assembly processes were identified as the primary drivers of bacterial communities in all May samples,whereas deterministic processes played a more prominent role in July.Seawater properties(e.g.,temperature and ammonium concentration)partially explained the compositional changes in the bacterial communities of these coral samples.Our findings suggested that coral nurseries contributed to the homogenization of bacterial communities in different Acropora corals,despite the apparent temporal dynamics of bacteria.These results enhance our understanding of the coral microbiome,ecological interactions and assembly principles in different host within in situ nurseries.
基金supported by the National Natural Science Foundation of China(Grant Nos.32172650,32430092)the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study(Grant No.SN-ZJU-SIAS-0011)+1 种基金the Fundamental Research Funds for the Central Universities of China(Grant No.226-2024-00119)the Innovative Development of Horticulture Discipline of Zhejiang University(Grant No.B231220.0005-25).
文摘Heterotrimeric G protein serves as a central hub in plant signal transduction,playing a pivotal role in integrating endogenous developmental signals and external environmental cues.While significant advances have been made in understanding G protein signaling mechanisms in model plants such as Arabidopsis and major crops like rice and maize,the precise regulatory roles in growth,development,and adaptation in horticultural crops are still poorly understood.In this review,we systematically summarize recent advances in uncovering both conserved and species-specific regulatory mechanisms of G protein signaling across diverse plant species.We also highlight key discoveries on the crosstalk between G protein-mediated pathways and other signaling cascades,such as hormone signaling,transcriptional regulation,and stress response networks.Finally,we discuss the potential applications of G protein signaling research in future crop improvement,offering new perspectives for advancing sustainable horticultural production.
基金supported by the Natural Science Foundation of Inner Mongolia Autonomous Region of China(Grant No.2024LHMS05048).
文摘ing electrons from BPA molecules,the N-CNTs/PDS system effectively minimised oxidant wastage and mitigated the risk of secondary pollution,ensuring efficient utilisation of active sites on N-CNTs and sustaining a high catalytic rate.The formation of the N-CNTs-PDS*complex significantly enhanced BPA degradation and mineralisation,thereby optimising PDS consumption.These findings highlight the unparalleled advantages of the N-CNTs/PDS system in managing complex wastewater,offering a promising and innovative solution for treating complex industrial wastewater and advancing environmental remediation efforts.
文摘The performance breakthroughs of some stealth materials have benefited from incorporating biomimetic concepts,and the design ideas of wave-absorbing metamaterials have been greatly broadened.How-ever,stealth materials developed based on a single biological structure still have limitations regarding overall performance and design freedom.Herein,a dual-structure element combination model with a butterfly-wing porous structure and moth-eye raised structure arranged in an orderly manner is estab-lished.Carbonyl iron and polyurethane are mixed as wave absorbents,and the model is utilized to make a biomimetic metamaterial(CSMA),which has an absorption rate of more than 90%at 6.07-18 GHz,achieving broadband effective absorption.It has been verified that the two biostructures designed after an ordered arrangement show synergistic effects in the combined model,and the cooperation between the structures induces the formation of current vector vortices,which are able to induce microwave losses to broaden the effective absorbing bandwidth.Further,the model has the combined application performance of polarization insensitivity,strong stability of oblique incidence,and low bistatic RCS.Such a thought based on the combination of multiple components provides an effective strategy for the design of broadband-absorbing metamaterials.
基金the startup fund of the Ohio State University(OSU)OSU Sustainability Institute Seed Grant+2 种基金OSU Institute for Materials Research Kickstart Facility Grantthe National Natural Science Foundation of China(No.31971740)the Science and technology project of Jiangsu Province(BE2018391).
文摘Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives,the ubiquitous use of electronics comes at the expense of increased exposure to electromagnetic(EM)radiation.Up to date,extensive efforts have been made to develop high-performance EM absorbers based on synthetic materials.However,the design of an EM absorber with both exceptional EM dissipation ability and good environmental adaptability remains a substantial challenge.Here,we report the design of a class of carbon heterostructures via hierarchical assembly of graphitized lignocellulose derived from bamboo.Specifically,the assemblies of nanofibers and nanosheets behave as a nanometer-sized antenna,which results in an enhancement of the conductive loss.In addition,we show that the composition of cellulose and lignin in the precursor significantly influences the shape of the assembly and the formation of covalent bonds,which affect the dielectric response-ability and the surface hydrophobicity(the apparent contact angle of water can reach 135°).Finally,we demonstrate that the obtained carbon heterostructure maintains its wideband EM absorption with an effective absorption frequency ranging from 12.5 to 16.7 GHz under conditions that simulate the real-world environment,including exposure to rainwater with slightly acidic/alkaline pH values.Overall,the advances reported in this work provide new design principles for the synthesis of high-performance EM absorbers that can find practical applications in real-world environments.
基金The National Natural Science Foundation of China under contract Nos 31400186 and 31670199the Scientific Research Plan of Tianjin Municipal Education Committee under contract No.JW1705the Research Fund for Talented Scholars of Tianjin Normal University(2016)
文摘Based on specimens collected in Yinggehai, Hainan, China from 2013 to 2016, a stable epiphytic taxon is found on the surface of the individual of marine green alga Cladophora aokii Yamada. According to the morphological characteristics, the taxonomy of Cl. aokii and its epiphytes is carried out. There are some epiphytes attached on Cl. aokii Yamada including Cl. fascicularis （Mertens ex C. Agardh） Kfitzing, Chaetomorpha pachynerna （Montagne） Kiitzing, Cerarniurn carnouii Dawson, Licmophora abbreviata Agardh, Lyngbya sp. and Chattonella sp.. The formation of the individual of Cl. aokii is dissected and explained, which can help to analyze the adaption in details among this species, its epiphytes and native marine environment. The results reveal the marine macroepiphytic taxonomy in Ha/nan, China, and preliminarily explain the adaptive relationship between macroalgae and environment.
基金Supported by Tianjin Municipal Natural Science Foundation of China(Grant No.19JCJQJC61600)Hebei Provincial Natural Science Foundation of China(Grant Nos.F2020202051,F2020202053).
文摘Visual odometry is critical in visual simultaneous localization and mapping for robot navigation.However,the pose estimation performance of most current visual odometry algorithms degrades in scenes with unevenly distributed features because dense features occupy excessive weight.Herein,a new human visual attention mechanism for point-and-line stereo visual odometry,which is called point-line-weight-mechanism visual odometry(PLWM-VO),is proposed to describe scene features in a global and balanced manner.A weight-adaptive model based on region partition and region growth is generated for the human visual attention mechanism,where sufficient attention is assigned to position-distinctive objects(sparse features in the environment).Furthermore,the sum of absolute differences algorithm is used to improve the accuracy of initialization for line features.Compared with the state-of-the-art method(ORB-VO),PLWM-VO show a 36.79%reduction in the absolute trajectory error on the Kitti and Euroc datasets.Although the time consumption of PLWM-VO is higher than that of ORB-VO,online test results indicate that PLWM-VO satisfies the real-time demand.The proposed algorithm not only significantly promotes the environmental adaptability of visual odometry,but also quantitatively demonstrates the superiority of the human visual attention mechanism.
