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Soil microbial communities of three major Chinese truffles in southwest China

文献类型： 外文期刊

作者： Fu, Yu 1 ; Li, Xiaolin 2 ; Li, Qiang 1 ; Wu, Haowei 1 ; Xiong, Chuan 1 ; Geng, Qi 1 ; Sun, Honghu 1 ; Sun, Qun 1 ;

作者机构： 1.Sichuan Univ, Coll Life Sci, Minist Educ, Key Lab Bioresources & Ecoenvironm, Chengdu 610064, Sichuan, Peoples R China

2.Sichuan Acad Agr Sci, Fertilizer Res Inst, Chengdu, Sichuan, Peoples R China

3.Chengdu Inst Food Control, Chengdu, Sichuan, Peoples R China

4.Chengdu Inst Drug Control, Chengdu, Sichuan,

关键词： Tuber pseudoexcavatum;Tuber sinoaestivum;Tuber indicum;microbial communities truffle

期刊名称：CANADIAN JOURNAL OF MICROBIOLOGY （ 影响因子：2.419； 五年影响因子：2.35 ）

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收录情况： SCI

摘要： Tuber pseudoexcavatum, Tuber sinoaestivum, and Tuber indicum are the 3 most important truffles growing in southeast China; however, their cultivation is still inefficient owing to the lack of understanding regarding the composition and function of the bacterial and fungal communities from the soils around the fruit bodies and the ectomycorrhiza of these truffles. The aim of this study was to disclose the microbial communities in truffle-producing soils in Huidong County, Sichuan, China, by using barcoded pyrosequencing. Approximately 350 000 quality-controlled sequences were obtained and grouped into 14 025 bacterial operational taxonomic units (OTUs) and 4385 fungal OTUs, which included 29 bacterial and 7 fungal phyla, respectively. The bacterial genus Acidobacterium and fungal genera Modicella, Pseudogymnoascus, and Mortierella were significantly more abundant in the control soils than in the truffle-producing soils (P < 0.05), while the bacterial genus Sphingomonas (Alphaproteobacteria) and arbuscular mycorrhizal fungal genus Glomus were significantly enriched in truffle-producing soil than in the control (P < 0.05), indicating their different roles within truffle grounds. Notably, some nonfungal organisms detected by 18S rDNA pyrosequencing were of high abundance, among which Cercozoa and Ochrophyta were significantly (P < 0.05) more abundant in truffle soils than in control soils, indicating their interactions with truffles.

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