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The physical structure of compost and C and N utilization during composting and mushroom growth in Agaricus bisporus cultivation with rice, wheat, and reed straw-based composts

文献类型： 外文期刊

作者： Wang, Qian 1 ; Juan, Jiaxiang 1 ; Xiao, Tingting 1 ; Zhang, Jinjing 1 ; Chen, Hui 1 ; Song, Xiaoxia 1 ; Chen, Mingjie; 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Natl Res Ctr Edible Fungi Biotechnol & Engn, Key Lab Appl Mycol Resources & Utilizat,Minist Ag, Shanghai Key Lab Agr Genet & Breeding,Inst Edible, 1000 Jinqi Rd, Shanghai 201403, Peoples R China

关键词： Agaricus bisporus; Straw; Composting; Physical structure; Substrate utilization

期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：3.53； 五年影响因子：3.913 ）

ISSN： 0175-7598

年卷期： 2021 年 105 卷 9 期

页码：

收录情况： SCI

摘要： The cultivation of Agaricus bisporus with compost made from wheat (Triticum aestivum L.), rice (Oryza sativa L.), and reed (Phragmites australis Trin.) straw was investigated. Straw degradation was analyzed at the microscopic level, and the corresponding changes in the breakdown of different lignocellulose components during different phases of composting and mushroom production helped in understanding the yield-limiting factors of using different straws to grow mushrooms. The wheat straw compost resulted in the highest mushroom production and had the highest bioconversion efficiency. The rice straw was limited by the softer texture, which resulted in low-porosity and overdecomposed compost in the composting process and decreased the amount of available lignocellulose during mycelial growth. Although reed straw had the largest carbon resources, its utilization rate was the lowest. The hard structure, low water holding capacity, and high porosity increased the recalcitrance of reed straw to degradation and prolonged the composting time, which resulted in large N and C losses and an increased C/N ratio. Moreover, reed straw failed to transform into "ready-to-consume C" in composting. Therefore, a high C/N ratio and deficiency of available nutrition decreased the utilization efficiency of the lignocellulosic components by A. bisporus during mycelial colonization and mushroom production. The investigation revealed that degradability by and availability to microbiota and A. bisporus seemed to be the overriding factors for optimizing the composting process with different straw types.

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