The intricate network of bilateral trade relationships among Pacific Rim countries(PRCs),along with the associated embodied carbon flows plays a pivotal role in shaping global carbon emission patterns and dynamics.Thi...The intricate network of bilateral trade relationships among Pacific Rim countries(PRCs),along with the associated embodied carbon flows plays a pivotal role in shaping global carbon emission patterns and dynamics.This study employs a multi-regional inputoutput analysis and a symbiotic degree model to explore the symbiotic effects of trade-embodied carbon flows between China and PRCs.We show that between 2009 and 2021,China's trade-embodied carbon exports to PRCs surged from 214.20 million tons to 614.80 million tons,driven largely by mechanical and electronic equipment.The share of the United States,Japan,and South Korea in China's total embodied carbon exports to PRCs has declined,whereas Southeast Asian countries have emerged as the primary source of China's embodied carbon imports.The degree of symbiosis in trade-embodied carbon between China and PRCs shifted from negative to positive,indicating a gradual trend toward positive asymmetric symbiosis.Moreover,China's role in regional trade-embodied carbon flows has transitioned from passive to active,with its influence particularly pronounced in countries such as Vietnam,Thailand,Japan,South Korea,and Russia.展开更多
Potential changes in the symbiotic relationship between rice(Oryza sativa)and microorganisms have occurred during the domestication of Asian cultivated rice(O.sativa)from common wild rice(Oryza rufipogon)and in respon...Potential changes in the symbiotic relationship between rice(Oryza sativa)and microorganisms have occurred during the domestication of Asian cultivated rice(O.sativa)from common wild rice(Oryza rufipogon)and in response to global climate change,along with evolving adaptations to the environment.The potential genes may express differently or dominate the symbiotic relationships between arbuscular mycorrhizal fungi(AMF)and plants,which may be beneficial to rice breeding.To date,research on this important topic has been limited.In this study,we aimed to examine the symbiotic relationships of Asian common wild and cultivated rice species with AMF.By conducting a comparative metagenomic analysis of the rhizospheres of wild and cultivated rice species,we identified differences in Rhizophagus intraradices-related genes associated with wild and cultivated rice,as well as functional genes of AMF.Furthermore,we obtained root-related genes associated with AMF from transcriptome data of rice roots.Our results collectively suggest that R.intraradices-related genes in the rhizosphere of wild rice may be more conducive to its colonization.Additionally,bacteria from the Nitrosomonadaceae and Nitrospiraceae families identified in the rhizosphere of wild rice exhibited positive correlations with R.intraradices-related genes with protein identifiers 1480749 and1871253,which may indicate that nitrobacteria can enhance the functions of R.intraradices in association with wild rice.Next,in a case study using comparative transcriptome analysis of root samples obtained from R.intraradices-inoculated wild and cultivated rice plants,we found significantly higher expression levels of the strigolactone pathway-related genes DWARF3(D3)and DWARF14(D14)in R.intraradices-inoculated common wild rice than in R.intraradices-inoculated cultivated rice.This study provides a theoretical basis for identifying the effects of domestication on mycorrhizal symbiosis-related genes,which could be promoted in wild rice in the future.展开更多
基金National Natural Science Foundation of China,No.42201258,No.42571214Ministry of Education Humanities and Social Sciences Research Youth Fund Project,No.22YJCZH057+2 种基金National Key Research and Development Program of China,No.2024YFE0214000The Project of Jinhua City’s Deepening of Local Cooperation between China and Africa in 2025,No.SXZF202548ZSpecial Major Project of National Influence Building Think Tank,No.ZKZD2024011。
文摘The intricate network of bilateral trade relationships among Pacific Rim countries(PRCs),along with the associated embodied carbon flows plays a pivotal role in shaping global carbon emission patterns and dynamics.This study employs a multi-regional inputoutput analysis and a symbiotic degree model to explore the symbiotic effects of trade-embodied carbon flows between China and PRCs.We show that between 2009 and 2021,China's trade-embodied carbon exports to PRCs surged from 214.20 million tons to 614.80 million tons,driven largely by mechanical and electronic equipment.The share of the United States,Japan,and South Korea in China's total embodied carbon exports to PRCs has declined,whereas Southeast Asian countries have emerged as the primary source of China's embodied carbon imports.The degree of symbiosis in trade-embodied carbon between China and PRCs shifted from negative to positive,indicating a gradual trend toward positive asymmetric symbiosis.Moreover,China's role in regional trade-embodied carbon flows has transitioned from passive to active,with its influence particularly pronounced in countries such as Vietnam,Thailand,Japan,South Korea,and Russia.
基金supported by the National Key Research and Development Program,China(No.2022YFD1500201)Science and Technology Innovation Project of Black Soil Granary,China(Nos.XDA28020400 and XDA28080200)+4 种基金the National Natural Science Foundation of China(Nos.42007043 and 41920104008)the Major Research and Development Projects of Jiangxi Province,China(No.20213AAF01001)the Science and Technology Cooperation Special Project of Jiangxi Province,China(No.20212BDH81023)the National Natural Science Foundation of Jilin Province,China(No.YDZJ202201ZYTS472)the Innovation Team Project of Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences(No.2023CXTD02)。
文摘Potential changes in the symbiotic relationship between rice(Oryza sativa)and microorganisms have occurred during the domestication of Asian cultivated rice(O.sativa)from common wild rice(Oryza rufipogon)and in response to global climate change,along with evolving adaptations to the environment.The potential genes may express differently or dominate the symbiotic relationships between arbuscular mycorrhizal fungi(AMF)and plants,which may be beneficial to rice breeding.To date,research on this important topic has been limited.In this study,we aimed to examine the symbiotic relationships of Asian common wild and cultivated rice species with AMF.By conducting a comparative metagenomic analysis of the rhizospheres of wild and cultivated rice species,we identified differences in Rhizophagus intraradices-related genes associated with wild and cultivated rice,as well as functional genes of AMF.Furthermore,we obtained root-related genes associated with AMF from transcriptome data of rice roots.Our results collectively suggest that R.intraradices-related genes in the rhizosphere of wild rice may be more conducive to its colonization.Additionally,bacteria from the Nitrosomonadaceae and Nitrospiraceae families identified in the rhizosphere of wild rice exhibited positive correlations with R.intraradices-related genes with protein identifiers 1480749 and1871253,which may indicate that nitrobacteria can enhance the functions of R.intraradices in association with wild rice.Next,in a case study using comparative transcriptome analysis of root samples obtained from R.intraradices-inoculated wild and cultivated rice plants,we found significantly higher expression levels of the strigolactone pathway-related genes DWARF3(D3)and DWARF14(D14)in R.intraradices-inoculated common wild rice than in R.intraradices-inoculated cultivated rice.This study provides a theoretical basis for identifying the effects of domestication on mycorrhizal symbiosis-related genes,which could be promoted in wild rice in the future.
