Microbial Community Diversity and Structure Analysis of Casing Soil During Mushroom (Agaricus bisporus) Growth
文献类型： 会议论文
第一作者： Weiming Cai
作者： Weiming Cai 1 ; Qunli Jin 1 ; Weilin Feng 1 ; Huaiying Yao 2 ; Yueyan Liu 2 ;
作者机构： 1.Horticulture Institute,Zhejiang Academy of Agricultural Sciences,310021,Hangzhou,China
2.Department of Resource Sciences,Zhejiang University,310029,Hangzhou,China
关键词： Microbial Community Diversity and Structure;Casing Soil;Agaricus bisporus;PLFA;DGGE
会议名称： Congress of the International Society for Mushroom Science
主办单位：
页码： 784-793
摘要： The culturable bacterial population, phospholipid fatty acid (PLFA) profile and PCR-DGGE of casing soil were investigated at different mushroom (Agaricus bisporus) cropping stages. The change in soil bacterial PLFAs was always accompanied by a change in the soil culturable bacterial population in the first flush. Comparatively higher bacterial PLFAs and culturable bacterial populations were found in casing soil at the primordia formation stage of the first flush. There was a significant increase in the ratio of fungal to bacterial PLFAs during mushroom growth. Multivariate analysis of PLFA data demonstrated that the mushroom cropping stage could considerably affect the microbial community structure of casing soil. The bacterial population increased significantly from casing soil application to the primordia formation stage of the first flush. Casing soil application resulted in an increase in the ratio of gram-negative bacterial PLFAs to gram-positive bacterial PLFAs, which may suggest that some gramnegative bacteria play an important role in mushroom sporophore initiation. PCR-DGGE of different casing soils showed that the amount of bands in the DGGE map was increased and the strength was enhanced as the mushroom growth. It suggested that the genetic diversity and structure of the bacterial community were affected by the mushroom and these were consistent with the results obtained from the PLFA assays. Based on the observation from the DGGE map of the casing soils, on which the mushroom had high output, the propagation of some bacterial communities which were represented by three special bands was initiated and the result probably signified a choice symbiotic interaction between the mushroom and these bacteria.
分类号： s646
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