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Effects of initial corncob particle size on the short-term composting for preparation of cultivation substrates for Pleurotus ostreatus

文献类型： 外文期刊

作者： Liu, Qin 1 ; Huang, Bao 1 ; Hu, Sujuan 1 ; Shi, Ziwen 2 ; Wu, Jie 2 ; Zhang, Yuting 1 ; Kong, Weili 1 ;

作者机构： 1.Minist Agr & Rural Affairs, Inst Edible Fungi, Henan Acad Agr Sci, Key Lab Evaluat & Utilizat Germplasm Resources Edi, Zhengzhou 450002, Peoples R China

2.Henan Agr Univ, Coll Life Sci, Zhengzhou 450002, Peoples R China

关键词： Corncob; Metabolic function; Microbial community; P. ostreatus cultivation; Short-term composting

期刊名称：ENVIRONMENTAL RESEARCH （ 影响因子：8.3； 五年影响因子：8.2 ）

ISSN： 0013-9351

年卷期： 2024 年 248 卷

页码：

收录情况： SCI

摘要： The short-term composting based on corncob for preparing Pleurotus ostreatus cultivation medium originated from agricultural production practices and so lacked systematic investigation. In this study, the influences of a Dafen (15 mm, DFT) and Xiaofen (5 mm, XFT) initial particle size (IPS) of corncob on the microbial succession and compost quality were examined. Results demonstrated that XFT compost was better suited for mushroom cultivation due to its high biological efficiency of 70 % and the absence of contamination. The composting microbes differed significantly between the DFT and XFT composts. During composting, the genera of Bacillus, Acinetobacter, Lactobacillus, Streptomyces, and Paenibacillus were majorly found in the DFT compost, while Acinetobacter, Lactobacillus, Puccinia, Bacteroides, and Bacillus genera dominated the XFT compost. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that throughout the thermophilic phase, XFT compost had much greater relative abundances of sequences relevant to energy, carbohydrate, and amino acid metabolism than DFT compost. Analysis of network correlations and Mantel tests indicated that IPS reduction could increase microbial interactions. Overall, adjusting the IPS of corncob to 5 mm increased microbial interactions, improved compost quality, and thereby boosted the P. ostreatus yield. These findings will be pertinent in optimizing the composting process of cultivation medium for P. ostreatus.

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