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Community assembly of ectomycorrhizal fungi along a subtropical secondary forest succession

Gao Cheng  Zhang Yu  Shi Nan-Nan  Zheng Yong  Chen Liang  Wubet Tesfaye  Bruelheide Helge  Both Sabine  Buscot Francois  Ding Qiong  Erfmeier Alexander  Kuhn Peter  Nadrowski Karin  Scholten Thomas  Guo Liang-Dong  
【摘要】:Environmental selection and dispersal limitation are two of the primary processes structuring biotic communities in ecosystems, but little is known about these processes in shaping soil microbial communities during secondary forest succession. We examined the communities of ectomycorrhizal(EM) fungi in young, intermediate and old forests in a Chinese subtropical ecosystem, using 454 pyrosequencing. The EM fungal community consisted of 393 operational taxonomic units(OTUs), belonging to 21 EM fungal lineages, in which three EM fungal lineages and 11 EM fungal OTUs showed significantly biased occurrence among the young, intermediate and old forests. The EM fungal community was structured by environmental selection and dispersal limitation in old forest, but only by environmental selection in young, intermediate, and whole forests. Furthermore, the EM fungal community was affected by different factors in the different forest successional stages, and the importance of these factors in structuring EM fungal community dramatically decreased along the secondary forest succession series. This study suggests that different assembly mechanisms operate on the EM fungal community at different stages in secondary subtropical forest succession.

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1 James D'Souza;Bernard Felinov Rodrigues;;Biodiversity of Arbuscular Mycorrhizal (AM) fungi in mangroves of Goa in West India[J];Journal of Forestry Research;2013年03期
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