The basic helix-loop-helix transcription factor Crf1 is required for development and pathogenicity of the rice blast fungus by regulating carbohydrate and lipid metabolism
文献类型： 外文期刊
作者： Cao, Huijuan 1 ; Huang, Pengyun 1 ; Yan, Yuxin 1 ; Shi, Yongkai 1 ; Dong, Bo 3 ; Liu, Xiaohong 4 ; Ye, Lidan 5 ; Lin, Fuc 1 ;
作者机构： 1.Zhejiang Univ, Coll Life Sci, State Key Lab Rice Biol, Hangzhou 310058, Zhejiang, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Jiangsu, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, Hangzhou 310021, Zhejiang, Peoples R China
4.Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol, Hangzhou 310058, Zhejiang, Peoples R China
5.Zhejiang Univ, Inst Bioengn, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China
6.Zhejiang Univ, Key Lab Cell & Gene Engn Zhejiang Prov, Hangzhou 3
期刊名称：ENVIRONMENTAL MICROBIOLOGY （ 影响因子：5.491； 五年影响因子：6.438 ）
ISSN： 1462-2912
年卷期： 2018 年 20 卷 9 期
页码：
收录情况： SCI
摘要： Pyricularia oryzae is a plant pathogen causing rice blast, a serious disease spreading in cultivated rice globally. Transcription factors play important regulatory roles in fungal development and pathogenicity. Here, we characterized the biological functions of Crf1, a basic helix-loop-helix (bHLH) transcription factor, in the development and pathogenicity of P. oryzae with functional genetics, molecular and biochemical approaches. We found that CRF1 is necessary for virulence and plays an indispensable role in the regulation of carbohydrate and lipid metabolism in P. oryzae. Deletion of CRF1 led to defects in utilization of lipids, ethanol, glycerol and L-arabinose, and down-regulation of many important genes in lipolysis, -oxidation, gluconeogenesis, as well as glycerol and arabinose metabolism. CRF1 is also essential for peroxisome and vacuole function, and conidial cell death during appressorium formation. The appressorium turgor, penetration ability and virulence in crf1 were restored by supplementation of exogenous glucose. The virulence of Crf1 mutant was also recovered by adding exogenous D-xylose, but not by addition of ethanol, pyruvate, leucine or L-arabinose. These data showed that Crf1 plays an important role in the complex regulatory network of carbohydrate and lipid metabolism that governs fungal development and pathogenicity.
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