Dynamic succession of substrate-associated bacterial composition and function during Ganoderma lucidum growth
文献类型： 外文期刊
作者： Zhang, Bo 2 ; Yan, Lijuan 3 ; Li, Qiang 4 ; Zou, Jie 1 ; Tan, Hao 2 ; Tan, Wei 2 ; Peng, Weihong 2 ; Li, Xiaolin 2 ; Zhang, Xiaoping 1 ;
作者机构： 1.Sichuan Agr Univ, Coll Resources, Dept Microbiol, Chengdu, Sichuan, Peoples R China
2.Sichuan Acad Agr Sci, Soil & Fertilizer Inst, Chengdu, Sichuan, Peoples R China
3.Friedrich Schiller Univ Jena, Inst Biodivers, Chair Aquat Geomicrobiol, Jena, Germany
4.Sichuan Acad Agr Sci, Biotechnol & Nucl Technol Res Inst, Chengdu, Sichuan, Peoples R China
5.Sichuan Univ, Coll Life Sci, Chengdu, Sichuan, Peoples R China
关键词： Ganoderma lucidum; Dynamic change; NGS; G. lucidum-bacteria-substrate; Functional pathways; Bacterial composition
期刊名称：PEERJ （ 影响因子：2.984； 五年影响因子：3.369 ）
ISSN： 2167-8359
年卷期： 2018 年 6 卷
页码：
收录情况： SCI
摘要： Background. Ganoderma lucidum, a valuable medicinal fungus, is widely distributed in China. It grows alongside with a complex microbial ecosystem in the substrate. As sequencing technology advances, it is possible to reveal the composition and functions of substrate-associated bacterial communities. Methods. We analyzed the bacterial community dynamics in the substrate during the four typical growth stages of G. lucidum using next-generation sequencing. Results. The physicochemical properties of the substrate (e.g. acidity, moisture, total nitrogen, total phosphorus and total potassium) changed between different growth stages. A total of 598,771 sequences from 12 samples were obtained and assigned to 22 bacterial phyla. Proteobacteria and Firmicutes were the dominant phyla. Bacterial community composition and diversity significantly differed between the elongation stage and the other three growth stages. LEfSe analysis revealed a large number of bacterial taxa (e.g. Bacteroidetes, Acidobacteria and Nitrospirae) with significantly higher abundance at the elongation stage. Functional pathway prediction uncovered significant abundance changes of a number of bacterial functional pathways between the elongation stage and other growth stages. At the elongation stage, the abundance of the environmental information processing pathway (mainly membrane transport) decreased, whereas that of the metabolism-related pathways increased. Discussion. The changes in bacterial community composition, diversity and predicted functions were most likely related to the changes in the moisture and nutrient conditions in the substrate with the growth of G. lucidum, particularly at the elongation stage. Our findings shed light on the G. lucidum-bacteria-substrate relationships, which should facilitate the industrial cultivation of G. lucidum.
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