中国生态农业学报2011，Vol.19Issue(4)：883-889,7.DOI:10.3724/SP.J.1011.2011.00883
外来植物紫茎泽兰入侵对菌根菌群落的影响
Effects of exotic plant Ageratina adenophora invasion on mycorrhizal fungal community
摘要
Abstract
The invasion of exotic plants and probability of successful invasion are affected by the interaction between exotic plants and soil microbes in invaded habitats. Furthermore, interactions among mycorThizal fungi (MF) and exotic plants have been the focus of the response of soil microbial mechanisms to plant invasion. This study used nested PCR to detect MF in roots and rhizosphere soils of native weeds and A. Adenophora in native weeds dominated community, A. Adenophora and native weeds mixed community, and A. Adenophora dominated community in A. Adenophora invaded habitats. The results showed that MF community structures were different for different invasion phases. Glomus intraradices clones were detected in roots of native weeds grown in native weeds dominated community. G. Intraradices clones were also noted in roots of A. Adenophora grown in A. Adenophora and native weeds mixed community. Only one Glomus (Glomus sp 2) clone was found in the roots of native weeds grown in A. Adenophora and native weeds mixed community. No MF was detected in the roots of A. Adenophora grown in A. Adenophora dominated communities. Also two Glomus (Glomus sp 1 and Glomus sp 2) clones were obtained in the rhizosphere soils of A. Adenophora dominated community. Trichoglossum hirsutum, Tricholoma saponaceum, Xytobolus subpileatux and Sarcodon imbricatus were detected in rhizospheresoils of A. Adenophora grown in A. Adenophora and native weeds mixed community. Camarophyllopsis hymenocephala, Lepista irina, T. Saponaceum and Panellus serotinus were found in rhizosphere soils of native weeds grown in A. Adenophora and native weeds mixed community. T. Saponaceum was found in rhizosphere soils of native weeds grown in native weeds dominated communities. MF communities were changed by A. Adenophora invasion and ectomycorrhizal fungi (EMF) more tikcty habited native weeds rhizosphere soils than A adenophora rhizosphere soils. Arbuscular mycorrhizal fungi (AMF) accumulated more in rhizosphere soils of exotic A. Adenophora than in native weeds rhizosphere soils. The probability of invasion changed MF community response to A adenophora invasion, which suggested that A. Adenophora heartened AMF in rhizosphere soils and induced positive AMF feedback, which enhanced A. Adenophora invasiveness. The study highlighted one of the important soil microbial mechanisms of A. Adeno-phora invasion in southeast China.关键词
外来植物入侵/紫茎泽兰/土著植物/植物群落/菌根真菌群落/嵌套PCRKey words
Exotic plant invasion/ Ageratina adenophora/ Native plant. Vegetation community/ Mycorrhizal fungi community/ Nested PCR分类
植物保护学引用本文复制引用
于文清,刘万学,万方浩..外来植物紫茎泽兰入侵对菌根菌群落的影响[J].中国生态农业学报,2011,19(4):883-889,7.基金项目
国家自然科学基金项目(30871654)和国家重点基础研究发展计划(973计划)项目(2009CB119200)资助 （30871654）
