Disruption of CmHmgr1 triggers apoptosis and causes defects in growth, conidiogenesis, and mycoparasitism of Coniothyrium minitans
文献类型： 外文期刊
作者： Yang, Xiaoxiang 1 ; Wang, Haixuan 3 ; Zhang, Lei 1 ; Zhang, Zhongmei 1 ; Hu, Zijin 1 ; Jiang, Daohong 3 ; Fu, Yanping 3 ;
作者机构： 1.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Integrated Pest Management Crops Southwest, Chengdu, Peoples R China
3.Huazhong Agr Univ, Coll Plant Sci & Technol, Prov Key Lab Plant Pathol Hubei Prov, Wuhan, Hubei, Peoples R China
4.Huazhong Agr Univ, Natl Key Lab Agr Microbiol, Wuhan, Hubei, Peoples R China
关键词：
期刊名称：VIRULENCE （ 影响因子：5.4； 五年影响因子：5.7 ）
ISSN： 2150-5594
年卷期： 2025 年 16 卷 1 期
页码：
收录情况： SCI
摘要： Coniothyrium minitans is a well-known mycoparasite against Sclerotinia sclerotiorum. Two critical factors for the commercialization of C. minitans as a biocontrol agent are conidial production and parasitism. To decipher the mechanisms of conidiogenesis and mycoparasitism in C. minitans, a conidiation-deficient mutant, ZS-1TN5012, was isolated from a transfer DNA (T-DNA) insertional library. This mutant exhibited significantly reduced hyphal development, poor conidiation, and decreased sclerotial mycoparasitism. CmHmgr1 encoding a 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) was disrupted by the T-DNA insertion. The colony morphology of the wild-type strain ZS-1 resembled that of the mutant ZS-1TN5012 when the HMGR inhibitor atorvastatin was added to potato dextrose agar, with the mutant showing more sensitivity to atorvastatin. Furthermore, cellular localization assays revealed that CmHmgr1 was localized in mitochondria. Gene replacement and complementation experiments confirmed that CmHmgr1 is involved in the growth, conidiogenesis and mycoparasitism of C. minitans, and disruption of CmHmgr1 triggers apoptosis.
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