Pharmaceutical-Food Homologous Plant-Derived Carbon Dots (P-CDs) have emerged as revolutionary nanomaterials in environmental pollutant management, demonstrating transformative potential for green chemistry and sustai...Pharmaceutical-Food Homologous Plant-Derived Carbon Dots (P-CDs) have emerged as revolutionary nanomaterials in environmental pollutant management, demonstrating transformative potential for green chemistry and sustainable material applications. These carbon dots establish an innovative technical framework by integrating dual "detection-remediation" functionalities through eco-friendly synthesis and high-value conversion of medicinal-edible plants and agroforestry waste. Their core advantages originate from structural templating effects induced by natural functional groups (polyphenols, amino acids) in plant precursors combined with heteroatom self-doping, which synergistically optimizes optical properties. This combination achieves quantum yields ranging from 3.06% to 84.9% and detection sensitivities spanning nanomolar to micromolar concentrations. In pollutant detection applications, P-CDs enable ultrasensitive identification of heavy metals (Hg^(2+) , Cu^(2+) , Fe^(3+) ) and organic contaminants (pesticides, antibiotics) through multi-mechanistic interactions including static quenching (SQ), dynamic quenching (DQ), and F rster resonance energy transfer (FRET). However, technological translation faces critical challenges including quantum yield heterogeneity (>40-fold variation), matrix interference in complex environmental samples (signal drift exceeding 12%), and scalability-related process inconsistencies. Future research priorities should focus on three key areas: standardization of synthesis protocols, development of surface passivation strategies ( e.g. , SiO_(2) encapsulation), and optimization of heterojunction designs to enhance interference resistance. The integration of in situ characterization techniques (particularly X-ray absorption spectroscopy) with machine learning-driven parameter optimization could significantly refine detection-remediation synergies. Concurrently, establishing a comprehensive lifecycle assessment framework becomes imperative for evaluating environmental impacts and scalability potential. This technology pioneers a sustainable paradigm for pollution control by bridging the gap between nanomaterial innovation and industrial deployment, thereby accelerating progress toward global ecological security objectives.展开更多
Detection of sulfur-oxidizing bacteria has largely been dependent on targeted gene sequencing technology or traditional cell cultivation, which usually takes from days to months to carry out. This clearly does not mee...Detection of sulfur-oxidizing bacteria has largely been dependent on targeted gene sequencing technology or traditional cell cultivation, which usually takes from days to months to carry out. This clearly does not meet the requirements of analysis for time-sensitive samples and/or complicated environmental samples. Since energy-dispersive X-ray spectrometry(EDS) can be used to simultaneously detect multiple elements in a sample, including sulfur, with minimal sample treatment, this technology was applied to detect sulfur-oxidizing bacteria using their high sulfur content within the cell. This article describes the application of scanning electron microscopy imaging coupled with EDS mapping for quick detection of sulfur oxidizers in contaminated environmental water samples, with minimal sample handling. Scanning electron microscopy imaging revealed the existence of dense granules within the bacterial cells, while EDS identified large amounts of sulfur within them. EDS mapping localized the sulfur to these granules. Subsequent 16S rRNA gene sequencing showed that the bacteria detected in our samples belonged to the genus Chromatium, which are sulfur oxidizers. Thus, EDS mapping made it possible to identify sulfur oxidizers in environmental samples based on localized sulfur within their cells, within a short time(within 24 h of sampling). This technique has wide ranging applications for detection of sulfur bacteria in environmental water samples.展开更多
Only by dynamic monitoring of air quality can air pollution be effectively controlled. The content of harmful gases released by human to the environment and the content of harmful gases contained in the air itself can...Only by dynamic monitoring of air quality can air pollution be effectively controlled. The content of harmful gases released by human to the environment and the content of harmful gases contained in the air itself can be monitored in real time. Through on-site sampling, conduct real-time regulatory control and analysis of environmental quality. In this regard, the government has issued relevant policies to control it. Environmental monitoring and management requires all of us to work together and participate in it. Thus real-time control of the entire environmental monitoring and management work, ensure that the effect of air pollution control to achieve the best. In this paper, the environmental detection and countermeasures of air pollution are studied and analyzed for reference.展开更多
With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great change...With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great changes to people's work and life. However, as we all know, Many industries are continuously creating more GDP for the country, but at the same time, they also cause irreversible damage to the ecological environment. Under the background of the new era, the Party and the government need to pay attention to the protection of the ecological environment. At present, the environmental protection work such as ecological inspection in our country is continuously popularized. While adopting advanced environmental protection technology, it is also necessary to ensure the effective implementation of the technology and further promote the sustainable development of the ecological environment.展开更多
High-sensitivity sensors represent a critical frontier in modern sensing technology,driving innovations across fields such as biomedical monitoring,precision instrumentation,environmental detection,and indus-trial aut...High-sensitivity sensors represent a critical frontier in modern sensing technology,driving innovations across fields such as biomedical monitoring,precision instrumentation,environmental detection,and indus-trial automation.As demands for accuracy,miniaturization,and reliability continue to grow,developing novel sensor architectures and functional materials has become essential to achieving enhanced performance under extreme or complex conditions.展开更多
When a fire breaks out in a high-rise building,the occlusion of smoke and obstacles results in dearth of crucial information concerning people in distress,thereby creating a challenge in their detection.Given the rest...When a fire breaks out in a high-rise building,the occlusion of smoke and obstacles results in dearth of crucial information concerning people in distress,thereby creating a challenge in their detection.Given the restricted sensing range of a single unmanned aerial vehicle(UAV)cam-era,enhancing the target recognition rate becomes challenging without target information.To tackle this issue,this paper proposes a multi-agent autonomous collaborative detection method for multi-targets in complex fire environments.The objective is to achieve the fusion of multi-angle visual information,effectively increasing the target’s information dimension,and ultimately address-ing the problem of low target recognition rate caused by the lack of target information.The method steps are as follows:first,the you only look once version5(YOLOv5)is used to detect the target in the image;second,the detected targets are tracked to monitor their movements and trajectories;third,the person re-identification(ReID)model is employed to extract the appearance features of targets;finally,by fusing the visual information from multi-angle cameras,the method achieves multi-agent autonomous collaborative detection.The experimental results show that the method effectively combines the visual information from multi-angle cameras,resulting in improved detec-tion efficiency for people in distress.展开更多
With the rapid development of social economy, environmental problems are becoming more and more serious. It is quite difficult to control the environmental pollution in China. In order to better realize the sustainabl...With the rapid development of social economy, environmental problems are becoming more and more serious. It is quite difficult to control the environmental pollution in China. In order to better realize the sustainable development strategy, we need to pay more attention to the environmental governance. Once there are problems in people's living environment, it will affect people's quality of life and level. The new era advocates the concept of shared development, coordinated development and green development, which makes people realize the importance of environmental impact more clearly.展开更多
With the continuous and rapid development of modern ecological environment protection, the key value role of environmental testing has become more and more prominent. How to effectively use diversified environmental t...With the continuous and rapid development of modern ecological environment protection, the key value role of environmental testing has become more and more prominent. How to effectively use diversified environmental testing techniques to comprehensively assist in promoting the high-quality development of environmental protection has attracted much attention in the industry. Based on this, this paper firstly introduces the multi-dimensional value function of environmental testing in environmental protection, analyzes the present situation and existing problems of environmental testing, and combining with the relevant practical experience, respectively, discusses the methods and paths to improve the level of environmental testing and optimize environmental protection from various angles and aspects such as the application of environmental testing information system based on modern science and technology, and expounds some personal opinions on this.展开更多
Background Toxoplasma gondii oocysts,excreted in cat feces,pose a significant health risk to humans through contaminated soil and water.Rapid and accurate detection of T.gondii in environmental samples is essential fo...Background Toxoplasma gondii oocysts,excreted in cat feces,pose a significant health risk to humans through contaminated soil and water.Rapid and accurate detection of T.gondii in environmental samples is essential for public health.Methods We developed a novel,single-tube detection method that integrates loop-mediated isothermal amplifiication(LAMP),the clustered regularly interspaced short palindromic repeats(CRISPR)/Cas12b system,and lateral flow immunoassay strips for rapid,visual identification of T.gondii.This method targeted the T.gondiiB1 gene,initially amplifies it with LAMP,directed by a single-guide RNA(sgRNA).It then recognizes the amplified target gene and activates trans-cleavage,cutting nearby single-stranded DNA(ssDNA)reporters.Fluorescence detection was performed using a 6-Carboxyfluorescein(FAM)-12N-BlackHoleQuencher-1(BHQ1)reporter,while.Fluorescein Isothiocyanate(FITC)-12N-Biotin enabled visual detection on lateral flow strips.The method was tested for its ability to detect various T.gondii genotypes and related parasites,assessing its specificity and broad-spectrum applicability.It was further applied to real-world environmental samples to evaluate its practicality.Results The LAMP-CRISPR/Cas12b method exhibited high specificity and broad-spectrum detection capability,successfully identifying nine T.gondii genotypes and distinguishing them from 11 other parasitic species.Sensitivity testing at both molecular(plasmid)and practical(oocyst)levels showed detection limits of 10 copies/μL and 0.1 oocyst,respectively.When applied to 112 environmental samples(soil,water,and cat feces),the method demonstrated 100%sensitivity,accurately reflecting known infection rates.Conclusions This LAMP-CRISPR/Cas12b single-tube method offers a robust,innovative approach for monitoring zoonotic T.gondii in environmental samples,with significant implications for public health surveillance.展开更多
The Perception Spectrogram Structure Boundary（PSSB）parameter is proposed for speech endpoint detection as a preprocess of speech or speaker recognition.At first a hearing perception speech enhancement is carried out...The Perception Spectrogram Structure Boundary（PSSB）parameter is proposed for speech endpoint detection as a preprocess of speech or speaker recognition.At first a hearing perception speech enhancement is carried out.Then the two-dimensional enhancement is performed upon the sound spectrogram according to the difference between the determinacy distribution characteristic of speech and the random distribution characteristic of noise.Finally a decision for endpoint was made by the PSSB parameter.Experimental results show that,in a low SNR environment from-10 dB to 10 dB,the algorithm proposed in this paper may achieve higher accuracy than the extant endpoint detection algorithms.The detection accuracy of 75.2%can be reached even in the extremely low SNR at-10 dB.Therefore it is suitable for speech endpoint detection in low-SNRs environment.展开更多
Porous silicon microcavities (PSM) optical crystals consisting of a Fabry-Perot microcavity embedded between two distributed Bragg reflectors have been fabricated by electrochemical etching. Scanning electron microsco...Porous silicon microcavities (PSM) optical crystals consisting of a Fabry-Perot microcavity embedded between two distributed Bragg reflectors have been fabricated by electrochemical etching. Scanning electron microscopy (SEM) clearly depicted their physical sandwich construction. The optical feature of the PSM structure was tuned by varying the anodization parameters. Through proper thermal oxidation and surface chemical modifications, the resulting structures were employed as optical sensors for the detection of environmental pollutants including volatile organic vapors (i.e. acetonitrile, toluene, cyclohexane, chloroform, acetone and ethanol) and interior decoration gases (i.e. toluene, ammonia and formaldehyde). Fourier transform infrared spectroscopy (FTIR) spectra confirmed the effective thermal annealing and surface modification chemistry, and the sensing process was accompanied by recording the modified structures' optical responses when exposed to target analytes. The PSM optical sensors showed good stability, sensitivity and selectivity, implying promising applications in gas sensing and en- vironmental monitoring.展开更多
The red palm weevil（RPW; Rhynchophorus ferrugineus） is spreading worldwide and severely harming many palm species. However, most studies on RPW focused on insect biology, and little information is available about th...The red palm weevil（RPW; Rhynchophorus ferrugineus） is spreading worldwide and severely harming many palm species. However, most studies on RPW focused on insect biology, and little information is available about the plant response to the attack. In the present experiment, we used metabolomics to study the alteration of the leaf metabolome of Phoenix canariensis at initial（1^（st） stage） or advanced（2^（nd） stage）attack by RPW compared with healthy（unattacked） plants.The leaf metabolome significantly varied among treatments. At the 1^（st） stage of attack, plants showed a reprogramming of carbohydrate and organic acid metabolism; in contrast, peptides and lipid metabolic pathways underwent more changes during the 2^（nd） than 1^（st） stage of attack. Enrichment metabolomics analysis indicated that RPW attack mostly affected a particular group of compounds rather than rearranging plant metabolic pathways. Some compounds selectively affected during the 1^（st） rather than 2^（nd） stage（e.g. phenylalanine; tryptophan; cellobiose;xylose; quinate; xylonite; idonate; and iso-threonate; cellobiotol and arbutine） are upstream events in the phenylpropanoid,terpenoid and alkaloid biosynthesis. These compounds could be designated as potential markers of initial RPW attack. However,further investigation is needed to determine efficient early screening methods of RPW attack based on the concentrations of these molecules.展开更多
Organic materials with room-temperature phosphorescence(RTP)emission have attracted extensive attention owing to their extraordinary properties,including long lifetime,large Stokes shift,and stimuliresponsiveness,and ...Organic materials with room-temperature phosphorescence(RTP)emission have attracted extensive attention owing to their extraordinary properties,including long lifetime,large Stokes shift,and stimuliresponsiveness,and show bright prospects in broad fields.Numerous design strategies,such as creating a rigid environment through crystallization and supramolecular assembly,can be employed to improve the luminescent characteristics of RTP materials by restricting nonradiative transition,enhancing intersystem crossing,and so forth.This review summarizes recent progress with organic room-temperature phosphorescent materials from the perspective of practical applications,including luminescence and display,environmental detection,and bioimaging,and the challenges and prospects will be discussed at the end,which should assist with future research on the application of RTP materials.展开更多
文摘Pharmaceutical-Food Homologous Plant-Derived Carbon Dots (P-CDs) have emerged as revolutionary nanomaterials in environmental pollutant management, demonstrating transformative potential for green chemistry and sustainable material applications. These carbon dots establish an innovative technical framework by integrating dual "detection-remediation" functionalities through eco-friendly synthesis and high-value conversion of medicinal-edible plants and agroforestry waste. Their core advantages originate from structural templating effects induced by natural functional groups (polyphenols, amino acids) in plant precursors combined with heteroatom self-doping, which synergistically optimizes optical properties. This combination achieves quantum yields ranging from 3.06% to 84.9% and detection sensitivities spanning nanomolar to micromolar concentrations. In pollutant detection applications, P-CDs enable ultrasensitive identification of heavy metals (Hg^(2+) , Cu^(2+) , Fe^(3+) ) and organic contaminants (pesticides, antibiotics) through multi-mechanistic interactions including static quenching (SQ), dynamic quenching (DQ), and F rster resonance energy transfer (FRET). However, technological translation faces critical challenges including quantum yield heterogeneity (>40-fold variation), matrix interference in complex environmental samples (signal drift exceeding 12%), and scalability-related process inconsistencies. Future research priorities should focus on three key areas: standardization of synthesis protocols, development of surface passivation strategies ( e.g. , SiO_(2) encapsulation), and optimization of heterojunction designs to enhance interference resistance. The integration of in situ characterization techniques (particularly X-ray absorption spectroscopy) with machine learning-driven parameter optimization could significantly refine detection-remediation synergies. Concurrently, establishing a comprehensive lifecycle assessment framework becomes imperative for evaluating environmental impacts and scalability potential. This technology pioneers a sustainable paradigm for pollution control by bridging the gap between nanomaterial innovation and industrial deployment, thereby accelerating progress toward global ecological security objectives.
基金Supported by the Basic Scientific Fund for National Public Research Institutes of China(Nos.GY02-2011T10,2015P07)the Qingdao Talent Program(No.13-CX-20)+1 种基金the National Natural Science Foundation of China(Nos.31100567,41176061)the National Natural Science Foundation for Creative Groups(No.41521064)
文摘Detection of sulfur-oxidizing bacteria has largely been dependent on targeted gene sequencing technology or traditional cell cultivation, which usually takes from days to months to carry out. This clearly does not meet the requirements of analysis for time-sensitive samples and/or complicated environmental samples. Since energy-dispersive X-ray spectrometry(EDS) can be used to simultaneously detect multiple elements in a sample, including sulfur, with minimal sample treatment, this technology was applied to detect sulfur-oxidizing bacteria using their high sulfur content within the cell. This article describes the application of scanning electron microscopy imaging coupled with EDS mapping for quick detection of sulfur oxidizers in contaminated environmental water samples, with minimal sample handling. Scanning electron microscopy imaging revealed the existence of dense granules within the bacterial cells, while EDS identified large amounts of sulfur within them. EDS mapping localized the sulfur to these granules. Subsequent 16S rRNA gene sequencing showed that the bacteria detected in our samples belonged to the genus Chromatium, which are sulfur oxidizers. Thus, EDS mapping made it possible to identify sulfur oxidizers in environmental samples based on localized sulfur within their cells, within a short time(within 24 h of sampling). This technique has wide ranging applications for detection of sulfur bacteria in environmental water samples.
文摘Only by dynamic monitoring of air quality can air pollution be effectively controlled. The content of harmful gases released by human to the environment and the content of harmful gases contained in the air itself can be monitored in real time. Through on-site sampling, conduct real-time regulatory control and analysis of environmental quality. In this regard, the government has issued relevant policies to control it. Environmental monitoring and management requires all of us to work together and participate in it. Thus real-time control of the entire environmental monitoring and management work, ensure that the effect of air pollution control to achieve the best. In this paper, the environmental detection and countermeasures of air pollution are studied and analyzed for reference.
文摘With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great changes to people's work and life. However, as we all know, Many industries are continuously creating more GDP for the country, but at the same time, they also cause irreversible damage to the ecological environment. Under the background of the new era, the Party and the government need to pay attention to the protection of the ecological environment. At present, the environmental protection work such as ecological inspection in our country is continuously popularized. While adopting advanced environmental protection technology, it is also necessary to ensure the effective implementation of the technology and further promote the sustainable development of the ecological environment.
文摘High-sensitivity sensors represent a critical frontier in modern sensing technology,driving innovations across fields such as biomedical monitoring,precision instrumentation,environmental detection,and indus-trial automation.As demands for accuracy,miniaturization,and reliability continue to grow,developing novel sensor architectures and functional materials has become essential to achieving enhanced performance under extreme or complex conditions.
文摘When a fire breaks out in a high-rise building,the occlusion of smoke and obstacles results in dearth of crucial information concerning people in distress,thereby creating a challenge in their detection.Given the restricted sensing range of a single unmanned aerial vehicle(UAV)cam-era,enhancing the target recognition rate becomes challenging without target information.To tackle this issue,this paper proposes a multi-agent autonomous collaborative detection method for multi-targets in complex fire environments.The objective is to achieve the fusion of multi-angle visual information,effectively increasing the target’s information dimension,and ultimately address-ing the problem of low target recognition rate caused by the lack of target information.The method steps are as follows:first,the you only look once version5(YOLOv5)is used to detect the target in the image;second,the detected targets are tracked to monitor their movements and trajectories;third,the person re-identification(ReID)model is employed to extract the appearance features of targets;finally,by fusing the visual information from multi-angle cameras,the method achieves multi-agent autonomous collaborative detection.The experimental results show that the method effectively combines the visual information from multi-angle cameras,resulting in improved detec-tion efficiency for people in distress.
文摘With the rapid development of social economy, environmental problems are becoming more and more serious. It is quite difficult to control the environmental pollution in China. In order to better realize the sustainable development strategy, we need to pay more attention to the environmental governance. Once there are problems in people's living environment, it will affect people's quality of life and level. The new era advocates the concept of shared development, coordinated development and green development, which makes people realize the importance of environmental impact more clearly.
文摘With the continuous and rapid development of modern ecological environment protection, the key value role of environmental testing has become more and more prominent. How to effectively use diversified environmental testing techniques to comprehensively assist in promoting the high-quality development of environmental protection has attracted much attention in the industry. Based on this, this paper firstly introduces the multi-dimensional value function of environmental testing in environmental protection, analyzes the present situation and existing problems of environmental testing, and combining with the relevant practical experience, respectively, discusses the methods and paths to improve the level of environmental testing and optimize environmental protection from various angles and aspects such as the application of environmental testing information system based on modern science and technology, and expounds some personal opinions on this.
基金Project support is provided by the National Key Research and Develop‑ment Program of China(Grant Nos.2021YFC2300800,2021YFC2300802 and 2021YFC2300804)Shanxi Provincial Agricultural and Rural Research Program(Grant No.LXXMsxnd202101)+1 种基金the Research Fund of Shanxi Province for Intro‑duced High‑level Leading Talents(Grant No.RFSXIHLT202101)the Special Research Fund of Shanxi Agricultural University for High‑level Talents(Grant No.2021XG001).
文摘Background Toxoplasma gondii oocysts,excreted in cat feces,pose a significant health risk to humans through contaminated soil and water.Rapid and accurate detection of T.gondii in environmental samples is essential for public health.Methods We developed a novel,single-tube detection method that integrates loop-mediated isothermal amplifiication(LAMP),the clustered regularly interspaced short palindromic repeats(CRISPR)/Cas12b system,and lateral flow immunoassay strips for rapid,visual identification of T.gondii.This method targeted the T.gondiiB1 gene,initially amplifies it with LAMP,directed by a single-guide RNA(sgRNA).It then recognizes the amplified target gene and activates trans-cleavage,cutting nearby single-stranded DNA(ssDNA)reporters.Fluorescence detection was performed using a 6-Carboxyfluorescein(FAM)-12N-BlackHoleQuencher-1(BHQ1)reporter,while.Fluorescein Isothiocyanate(FITC)-12N-Biotin enabled visual detection on lateral flow strips.The method was tested for its ability to detect various T.gondii genotypes and related parasites,assessing its specificity and broad-spectrum applicability.It was further applied to real-world environmental samples to evaluate its practicality.Results The LAMP-CRISPR/Cas12b method exhibited high specificity and broad-spectrum detection capability,successfully identifying nine T.gondii genotypes and distinguishing them from 11 other parasitic species.Sensitivity testing at both molecular(plasmid)and practical(oocyst)levels showed detection limits of 10 copies/μL and 0.1 oocyst,respectively.When applied to 112 environmental samples(soil,water,and cat feces),the method demonstrated 100%sensitivity,accurately reflecting known infection rates.Conclusions This LAMP-CRISPR/Cas12b single-tube method offers a robust,innovative approach for monitoring zoonotic T.gondii in environmental samples,with significant implications for public health surveillance.
基金supported by the National Natural Science Foundation of China.(61071215,61271359,61372146)
文摘The Perception Spectrogram Structure Boundary（PSSB）parameter is proposed for speech endpoint detection as a preprocess of speech or speaker recognition.At first a hearing perception speech enhancement is carried out.Then the two-dimensional enhancement is performed upon the sound spectrogram according to the difference between the determinacy distribution characteristic of speech and the random distribution characteristic of noise.Finally a decision for endpoint was made by the PSSB parameter.Experimental results show that,in a low SNR environment from-10 dB to 10 dB,the algorithm proposed in this paper may achieve higher accuracy than the extant endpoint detection algorithms.The detection accuracy of 75.2%can be reached even in the extremely low SNR at-10 dB.Therefore it is suitable for speech endpoint detection in low-SNRs environment.
基金supported by the National Natural Science Foundation of China (20875062 & 81071249)Shenzhen Science and Technology Pro-jects (SY200806300225A)the "Hundred Talents Program" of Chinese Academy of Sciences
文摘Porous silicon microcavities (PSM) optical crystals consisting of a Fabry-Perot microcavity embedded between two distributed Bragg reflectors have been fabricated by electrochemical etching. Scanning electron microscopy (SEM) clearly depicted their physical sandwich construction. The optical feature of the PSM structure was tuned by varying the anodization parameters. Through proper thermal oxidation and surface chemical modifications, the resulting structures were employed as optical sensors for the detection of environmental pollutants including volatile organic vapors (i.e. acetonitrile, toluene, cyclohexane, chloroform, acetone and ethanol) and interior decoration gases (i.e. toluene, ammonia and formaldehyde). Fourier transform infrared spectroscopy (FTIR) spectra confirmed the effective thermal annealing and surface modification chemistry, and the sensing process was accompanied by recording the modified structures' optical responses when exposed to target analytes. The PSM optical sensors showed good stability, sensitivity and selectivity, implying promising applications in gas sensing and en- vironmental monitoring.
基金funded by the Project PROPALMA(D.M.25618/7301/11)by the Italian Ministry of Agricultural,Food and Forestry Policies(Mi PAAF)
文摘The red palm weevil（RPW; Rhynchophorus ferrugineus） is spreading worldwide and severely harming many palm species. However, most studies on RPW focused on insect biology, and little information is available about the plant response to the attack. In the present experiment, we used metabolomics to study the alteration of the leaf metabolome of Phoenix canariensis at initial（1^（st） stage） or advanced（2^（nd） stage）attack by RPW compared with healthy（unattacked） plants.The leaf metabolome significantly varied among treatments. At the 1^（st） stage of attack, plants showed a reprogramming of carbohydrate and organic acid metabolism; in contrast, peptides and lipid metabolic pathways underwent more changes during the 2^（nd） than 1^（st） stage of attack. Enrichment metabolomics analysis indicated that RPW attack mostly affected a particular group of compounds rather than rearranging plant metabolic pathways. Some compounds selectively affected during the 1^（st） rather than 2^（nd） stage（e.g. phenylalanine; tryptophan; cellobiose;xylose; quinate; xylonite; idonate; and iso-threonate; cellobiotol and arbutine） are upstream events in the phenylpropanoid,terpenoid and alkaloid biosynthesis. These compounds could be designated as potential markers of initial RPW attack. However,further investigation is needed to determine efficient early screening methods of RPW attack based on the concentrations of these molecules.
基金We gratefully acknowledge the financial support from the National Key Research and Development Program of China(2022YFB3203500)the National Natural Science Foundation of China(21788102,22125803,and 22020102006)+2 种基金project support by the Shanghai Municipal Science and Technology Major Project(Grant No.2018SHZDZX03)Program of Shanghai Academic/Technology Research Leader(20XD1421300)the Fundamental Research Funds for the Central Universities.
文摘Organic materials with room-temperature phosphorescence(RTP)emission have attracted extensive attention owing to their extraordinary properties,including long lifetime,large Stokes shift,and stimuliresponsiveness,and show bright prospects in broad fields.Numerous design strategies,such as creating a rigid environment through crystallization and supramolecular assembly,can be employed to improve the luminescent characteristics of RTP materials by restricting nonradiative transition,enhancing intersystem crossing,and so forth.This review summarizes recent progress with organic room-temperature phosphorescent materials from the perspective of practical applications,including luminescence and display,environmental detection,and bioimaging,and the challenges and prospects will be discussed at the end,which should assist with future research on the application of RTP materials.
