探索生命极限的模式生物——南极土壤自由生活线虫Plectus murrayi及其环境适应性特征
Model Organism Exploring Life Limit—Plectus murrayi,A Free-living Nematode in Antarctic Soil,and Its Environmental Adaptability
摘要
Abstract
Antarctic soil metazoa is one of the most valuable bio-resources on the earth.Its adaptation of extremely harsh soil habitats and ecological functions has always been one of the leading topics in evolution and soil ecology.Nematode Plectus murrayi is one of the dominant continental organisms only found in Antarctica,and it is merging as a model organism for studying on evolutionary biology in high stresses environment.This study aims to review the current studies of its phylogeny,distribution,life cycle and the development in the laboratory,as well as its freezing and desiccation tolerance on a genetic level.Compared to other Antarctic nematodes,P.murrayi prefers relatively higher moisture and lower salinity soil habitats,which might be consistent with its broad distribution in more productive habitats of Antarctica.Due to the temperature and humidity increasing in Antarctic McMurdo Dry Valleys(MDV),P.murrayi may become into the dominant continental animal in Antarctic deserts.By researching on P.murrayi,we hope to be able to explore new connections between its adaptation and functional genes that are responsible for stress tolerance and stoichiometric constraints(including the GRH and genomic streamlining).Based on studies of short-term and long-term responses of P.murrayi to environmental stresses in Antarctica,it is possible to reveal the relationship between the evolution and ecosystem complexity,as well as the role of elemental stoichiometry in shaping communities from more complex ecosystems.关键词
南极麦克默多山谷沙漠/南极自由生活线虫/生态系统/干旱极寒Key words
McMurdo Valley Desert/Antarctic free living nematode/Ecosystem/Extreme dry and cold分类
农业科技引用本文复制引用
薛夏,王中华,李绍建,姜瑛..探索生命极限的模式生物——南极土壤自由生活线虫Plectus murrayi及其环境适应性特征[J].土壤,2023,60(5):925-934,10.基金项目
国家重点研发计划项目"绿色智能复合肥料创制与产业化(2023YFD1700203)"、云南省科技厅项目"云南现代农业绿色关键技术创新与平台建设(202102AE090053)"、云南省科技厅重点研发计划"滇池流域农业绿色发展模式创新策略与实现途径(202102AE090030)"和北京高校精尖学科建设项目共同资助 Supported by the National Key Research and Development Program of China"The Creation and Industrialization of Green Intelligent Compound Fertilizer"(No.2023YFD1700203),the Yunnan Science and Technology Department project"Key Technology Innovation and Platform Construction of Green Modern Agriculture in Yunnan(No.202102AE090053)",the Key Research and Development Program of Yunnan Science and Technology Department project"Innovation Strategy and Realization Approach of Agriculture Green Development in Dianchi Lake Basin"(No.202102AE090030),and the Beijing University Advanced Discipline Construction Project （2023YFD1700203）
