摘要
植物根系分泌物是根际的重要化合物来源,提供碳源和调控根际环境等措施,对微生物群落的组成、功能及抗逆能力具有显著影响。同时,秸秆还田、植物凋落物归还、生物炭投入和有机肥施用等外源碳输入可显著改变微生物的数量、多样性及代谢活性。为揭示植物根-土-微生物互作机制、优化土壤管理及推动微生物驱动的可持续农业发展,综述了根系分泌物和外源碳输入对土壤微生物的作用机制,重点阐述了:(1)根系分泌物的化学组成及其通过营养供给、理化环境调节和信号作用对细菌、真菌及病原微生物的调控效应;(2)不同类型和施用水平的外源碳输入对微生物群落结构、功能和生态过程的影响;(3)根系分泌物与外源碳输入之间的相互作用对土壤微生物群落的影响。并根据当前的研究进展对未来的研究方向和内容进行展望。
Root exudates are an important source of compounds in the rhizosphere,and they significantly influence the composition,function,and stress resistance of microbial communities by providing carbon sources and regulating the rhizosphere physicochemical environment.Meanwhile,the application of exogenous carbon sources such as straw returning,plant litter,biochar,and organic fertilizers can significantly alter the quantity,diversity,and metabolic activity of microorganisms.To reveal the root-soil-microbe interaction mechanism,optimize soil management,and promote the development of sustainable agriculture driven by microorganisms,this review summarizes the mechanisms by which root exudates and external carbon inputs affect soil microorganisms,with a focus on:(1)the chemical composition of root exudates and their regulatory effects on bacteria,fungi,and pathogenic microorganisms through nutrient supply,physical and chemical environment regulation,and signaling;(2)the impacts of different types and application levels of external carbon inputs on microbial community structure,function,and ecological processes;(3)the effects of the interaction between root exudates and external carbon inputs on soil microbial communities.Based on current research progress,future research directions are proposed.
作者
赵娜
罗绪强
陈辉
唐凤
ZHAO Na;LUO Xuqiang;CHEN Hui;TANG Feng(Nanhu Sub-district Office of Pu’an County People’s Government,Qianxinan Prefecture 561500,China;School of Geography and Resources,Guizhou Education University,Guiyang 550018,China;Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550009,China)
出处
《黑龙江农业科学》
2025年第11期102-110,共9页
Heilongjiang Agricultural Sciences
基金
国家自然科学基金项目(32260725)
贵州省科技厅基础研究计划项目(黔科合基础-zk〔2023〕一般283)。
关键词
根系分泌物
外源碳输入
秸秆还田
植物凋落物归还
生物炭投入
有机肥施用
土壤微生物
root exudates
exogenous carbon input
crop residue returning to the soil
plant debris returning
biochar input
organic fertilizer application
soil microorganisms
