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A Comprehensive Analysis of the Small GTPases Ypt7 Involved in the Regulation of Fungal Development and Secondary Metabolism in Monascus ruber M7

文献类型: 外文期刊

作者: Liu, Jiao 1 ; Lei, Ming 2 ; Zhou, Youxiang 1 ; Chen, Fusheng 2 ;

作者机构: 1.Hubei Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Wuhan, Hubei, Peoples R China

2.Huazhong Agr Univ, Coll Food Sci & Technol, Key Lab Environm Correlat Dietol, Wuhan, Hubei, Peoples R China

关键词: Ypt7; Monascus; development; secondary metabolism; regulation

期刊名称:FRONTIERS IN MICROBIOLOGY ( 影响因子:5.64; 五年影响因子:6.32 )

ISSN: 1664-302X

年卷期: 2019 年 10 卷

页码:

收录情况: SCI

摘要: Ypts (yeast protein transports), also called as ras-associated binding GTPases (Rab), are the largest group of the small GTPases family, which have been extensively studied in model eukaryotic cells and play a pivotal role in membane trafficking, while this study showed potential regulation role of Ypts in fungi. One of Ypts, Ypt7 may be involved in fungal development and secondary metabolism, but the exact mechanism still exists a controversy. In current study, the functions of a Monascus ypt7 homologous gene (mrypt7) from Monascus ruber M7 was investigated by combination of gene-deletion (Delta mrypt7), overexpression (M7::PtrpC-mrypt7) and transcriptome analysis. Results showed that the radial growth rate of Delta mrypt7 was significantly slower than M. ruber M7, little conidia and ascospores can be observed in Delta mrypt7, but the yield of intracellular secondary metabolites was dramatically increased. Simultaneously, the mrypt7 overexpression strain possessed similar capacity for sporulation and secondary metabolismobserved inM. ruber M7. Transcriptome results further illustrated thatmrypt7 could coordinate with numerous genes involved in the vegetative growth, conidiogenesis, secondary metabolism biosynthesis and transportation of M. ruber M7. Combined with the similar effect of Ypt7 homologs on other fungi, we propose that Ypt7 works more like a global regulatory factor in fungi. To our knowledge, it is the first time to investigate Ypt7 functions in Monascus. It could also improve the understanding of Ypt7 functions in fungi.

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