AM真菌与植物的互作及其对植物种间竞争的影响  

Interaction between Arbuscular Mycorrhizal Fungi and Host Plant,and Their Impacts on Plants Inter-specific Competition

作　　者：豆存艳[1] 王晓娟[1] 陈牧[1] 李媛媛[1] 林双双[1] 金樑[1] 

机构地区：[1]兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《云南农业大学学报（自然科学版）》2011年第3期412-417,共6页Journal of Yunnan Agricultural University:Natural Science

基　　金：国家科技支撑计划项目(2009BAC53B04);兰州大学中央高校基本科研业务费专项资金资助(lzujbky-2010-4)

摘　　要：丛植菌根(AM)是自然界广泛存在的一种植物根系与菌根真菌的共生体。种间竞争是群落中不同物种之间由于资源的稀缺性和可利用性之间的差异而产生的相互竞争效应。二者均是影响植物群落结构和功能的重要因素。因而探究AM真菌和植物种间竞争之间的相互作用,对于揭示植物群落的动态变化、结构组成以及维持群落的稳定性和多样性具有重要的意义。基于此,本文以丛枝菌根真菌为中心,在探讨AM真菌与植物互作效应的基础上,通过对AM真菌与植物群落的排除效应和共存效应的机理分析,探究AM真菌对植物种间竞争的影响,同时对AM真菌与种间竞争未来的研究方向进行了展望。Arbuscular mycorrhizal （AM） fungi and inter-specific competition are considered as the two main factors which affect plant community structures and stabilities in natural and artificial ecosystems. According to the effects of symbionts, the interaction between AM fungi and plant inter-specific competition has become one of the hotspots in applied and theoretical ecology, which study on revealing the dynamic, structure, biodiversity and stability of plant community. On the basis of this, the objective of this study was to investigate the interaction between AM fungi and their host plants, which showed that there were positive benefits to both of AM fungi and host plants. According to the influence of AM symbionts, there were two kinds of inter-competition effects： the competitive exclusion and the competitive coexistence. The impacts, mechanisms, and strategies which related to inter-specific competition with AM fungi were given out. Otherwise, the perspective of AM fungi and inter-specific competition were also discussed.

关 键 词：丛枝菌根 种间竞争 植物 群落 竞争排除 竞争共存 

分 类 号：Q948.122.1[生物学—植物学]