水生植物附着细菌群落组成特征及构建机制研究进展  

Research progress on community composition and assembly mechanism of epiphytic bacterial community associated with aquatic macrophytes

作　　者：胡思文 何汝嘉 苏芮[2] 赵大勇[2] 吴庆龙[1,3] 曾巾 Hu Siwen;He Rujia;Su Rui;Zhao Dayong;Wu Qinglong;Zeng Jin(State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,P.R.China;The National Key Laboratory of Water Disaster Prevention,Hohai University,Nanjing 210098,P.R.China;Sino-Danish College,University of Chinese Academy of Sciences,Beijing 100049,P.R.China;Poyang Lake Wetland Research Station,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Jiujiang 332899,P.R.China)

机构地区：[1]中国科学院南京地理与湖泊研究所,湖泊与环境国家重点实验室,南京210008 [2]河海大学,水灾害防御全国重点实验室,南京210098 [3]中国科学院大学中丹学院,北京100049 [4]中国科学院南京地理与湖泊研究所,鄱阳湖湖泊湿地综合研究站,九江332899

出　　处：《湖泊科学》2024年第5期1303-1322,共20页Journal of Lake Sciences

基　　金：江苏省碳达峰碳中和科技创新专项资金项目(BK20220015);国家自然科学基金项目(U23A20153,92351303);中国科学院青年科学家小组项目(2021NIGLAS-CJH01)联合资助。

摘　　要：水生植物根叶表面定殖了高度多样化的细菌群落,这些细菌类群在促进植物生长发育、提高养分吸收以及增强环境适应性等方面发挥重要作用,并通过与植物形成复杂的共生功能体,深刻影响着水生生态系统中的生物地球化学循环过程。然而,当前对水生植物附着细菌群落的认识及应用尚显不足。深入理解水生植物附着细菌群落组成及构建机制,阐明其与宿主间复杂的相互作用关系,对揭示和调控水生植物-微生物组的生态功能以及维持水生生态系统健康具有重要意义。本文系统总结了水生植物附着细菌群落的多样性及组成特征,从宿主植物的选择效应、环境响应以及细菌的种间相互作用等方面梳理了水生植物附着细菌群落的形成机理和驱动机制,并介绍了调控水生植物附着细菌群落构建的生态学过程,阐述了水生植物附着细菌群落在湖泊碳、氮循环过程中的作用。此外,对水生植物附着细菌群落的进一步研究进行了展望,建议未来可以从水生植物附着细菌群落的功能特征、核心菌群挖掘、合成群落应用、对全球变化的响应规律以及水生植物-微生物协同降污增汇技术等方面开展深入研究。Diverse bacterial communities colonize on the surfaces of aquatic macrophytes roots and leaves and play important roles in promoting plant growth,nutrient uptake,and environmental fitness.These bacterial taxa also profoundly affect the biogeochemical cycles in aquatic ecosystems by co-evolving with their plant hosts as“holobiont”.However,the current understanding and application of the epiphytic bacterial community associated with aquatic macrophytes remains unclear.Understanding the composition and assembly mechanism of the epiphytic bacterial communities associated with aquatic macrophytes and elucidating the complex interactions between these bacterial taxa and their hosts will be helpful to reveal and regulate the ecological functions of aquatic macrophytes microbiome and maintain the health of aquatic ecosystems.In this review,we systematically summarized the diversity and composition characteristics of the epiphytic bacterial communities associated with aquatic macrophytes.We also summarized the driving factors that shape the bacterial community composition,from the perspective of host selection effects,environmental factor control,and bacterial interactions.Moreover,we discussed the ecological processes affecting the bacterial community assembly and further emphasized the impacts of macrophyte epiphytic bacterial communities on the carbon and nitrogen cycling in lake ecosystems.Finally,we proposed that future researches on epiphytic bacterial community associated with aquatic macrophytes should focus on microbial functional traits,core species,the application of synthetic bacterial communities,microbial response to global changes as well as technology aiming to increase pollutant removal and carbon sink via macrophytes and their associated microbes.

关 键 词：水生植物 叶际 根际 细菌群落 驱动因素 构建机制 碳氮循环 

分 类 号：Q948.8[生物学—植物学] Q938