Transcriptomic analysis and carbohydrate metabolism-related enzyme expression across different pH values in Rhizopus delemar

文献类型： 外文期刊

第一作者： Liang, Jinpeng

作者： Liang, Jinpeng;Chen, Yulan;Li, Sisi;Liu, Dongyang;Tian, Hong;Xiang, Quanju;Zhao, Ke;Yu, Xiumei;Chen, Qiang;Zhang, Lingzi;Penttinen, Petri;Gu, Yunfu;Chen, Yulan;Liu, Dongyang;Fan, Hongzhu

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关键词： environmental pH; Rhizopus delemar; CAZymes; transcriptomics; growth and metabolism

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）

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年卷期： 2024 年 15 卷

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收录情况： SCI

摘要： Introduction: pH is one of the important factors affecting the growth and performance of microorganisms. Methods: We studied the pH response and plant growth-promoting (PGP) ability of Rhizopus delemar using cultivation experiments and transcriptomics, and verified the expression profiles using quantitative real-time PCR. Results: pH affected the growth and PGP properties of R. delemar. At pH 7, the growth rate of R. delemar was rapid, whereas pH 4 and 8 inhibited mycelial growth and PGP ability, respectively. In the pot experiment, the plant height was the highest at pH 7, 56 cm, and the lowest at pH 4 and pH 5, 46.6 cm and 47 cm, respectively. Enzyme activities were highest at pH 6 to pH 7. Enzyme activities were highest at pH 6 to pH 7. Among the 1,629 differentially expressed genes (DEGs), 1,033 genes were up-regulated and 596 were down-regulated. A total of 1,623 DEGs were annotated to carbohydrate-active enzyme coding genes. Discussion: The PGP characteristics, e.g., Phosphorus solubilization ability, of R. delemar were strongest at pH 7. The results provide useful information regarding the molecular mechanism of R. delemar pH response.

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