A Preliminary Survey of Arbuscular Mycorrhizal Fungi Associated with Marsh Plants in Lhalu Wetland, Suburban Lhasa, South Tibet

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• 出版年：2010
• 作者：YANG　Fuyu；Peter　Christie；LI　Xiaolin；DAIYan；LI　Guizhen；GAI　Jingping
• 单位1：Department of Grassland Science，China Agricultural University
• 语种：中文
• 作者关键词：Lhalu wetland；arbuscular mycorrhiza；root colonization；spore density
• 起始页：28
• 总页数：9
• 刊名：湿地科学
• 是否内版：否
• 刊频：季刊
• 创刊时间：2003
• 主办单位：中国科学院；东北地理与农业生态研究所
• 主编：刘兴土
• 电子信箱：wetlands@neigae.ac.cn
• 卷：8
• 期：1
• 期刊索取号：P224.06141
• 核心期刊：中国科学引文数据库核心库期刊；中国科技核心期刊

摘要

A survey was made of the spore community of arbuscular mycorrhizal fungi (AMF) and root colonization byAMF in 16 plant species in Lhalu wetland on the outskirts of Lhasa city in Tibet. It was found that 13 of the 16 plantspecies investigated (81.5% ) formed arbuscular mycorrhizal structures and dark septate endophytic fungi colonized theroots of most species. Total AMF colonization ranged from 0 to 82.6% in dicots and 0 to 54.5% in monocots. Both totalAMF and arbuscular colonization were greater in dicots than that in monocots. A total of48 taxa representing 7 genera ofAMF were isolated and identified. Of these, 9 species belonged to Acaulospora, 2 to Appendicispora, 34 to Glomus, and1 each to Pacispora, Paraglomus and Scutellospora. Spores of Glomus aggregatum, G. deserticola and G. etunicatumwere most common and abundant in the spore survey. Spores of 8 to 26 AMF species were isolated from the thizospheresoil of individual plant species. Spore densities in soil associated with the 16 plant species ranged from 20 to 475 per 20g soil, with an average of (92.3±14.6). Species richness of AMF ranged from 6 to 12.7. There were no significantdifferences between dicots and monocots in AMF spore density or species richness. Future work directed towards under-standing the response of the wetland plants to AMF may provide some insight into the role that these fungal symbiontsmay play in influencing plant diversity in this important urban wetland.