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Effects of Different Nitrogen Levels on Lignocellulolytic Enzyme Production and Gene Expression under Straw-State Cultivation in Stropharia rugosoannulata

文献类型： 外文期刊

作者： Zhang, Jinjing 1 ; Zhuo, Xinyi 1 ; Wang, Qian 1 ; Ji, Hao 1 ; Chen, Hui 1 ; Hao, Haibo 1 ;

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

2.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China

3.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 200090, Peoples R China

4.Fudan Univ, Inst Plant Biol, Sch Life Sci, State Key Lab Genet Engn, Shanghai 200438, Peoples R China

5.Fudan Univ, Inst Plant Biol, Fudan Ctr Genet Divers & Designing Agr, Sch Life Sci, Shanghai 200438, Peoples R China

关键词： Stropharia rugosoannulata; nitrogen metabolism; cellulase metabolism; CAZymes; MAPK signaling pathway

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 1661-6596

年卷期： 2023 年 24 卷 12 期

页码：

收录情况： SCI

摘要： Stropharia rugosoannulata has been used in environmental engineering to degrade straw in China. The nitrogen and carbon metabolisms are the most important factors affecting mushroom growth, and the aim of this study was to understand the effects of different nitrogen levels on carbon metabolism in S. rugosoannulata using transcriptome analysis. The mycelia were highly branched and elongated rapidly in A3 (1.37% nitrogen). GO and KEGG enrichment analyses revealed that the differentially expressed genes (DEGs) were mainly involved in starch and sucrose metabolism; nitrogen metabolism; glycine, serine and threonine metabolism; the MAPK signaling pathway; hydrolase activity on glycosyl bonds; and hemicellulose metabolic processes. The activities of nitrogen metabolic enzymes were highest in A1 (0.39% nitrogen) during the three nitrogen levels (A1, A2 and A3). However, the activities of cellulose enzymes were highest in A3, while the hemicellulase xylanase activity was highest in A1. The DEGs associated with CAZymes, starch and sucrose metabolism and the MAPK signaling pathway were also most highly expressed in A3. These results suggested that increased nitrogen levels can upregulate carbon metabolism in S. rugosoannulata. This study could increase knowledge of the lignocellulose bioconversion pathways and improve biodegradation efficiency in Basidiomycetes.

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