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MoDHX35, a DEAH-Box Protein, Is Required for Appressoria Formation and Full Virulence of the Rice Blast Fungus, Magnaporthe oryzae

文献类型: 外文期刊

作者: Ying, Shumin 1 ; Zhang, Zhen 1 ; Zhang, Yanan 1 ; Hao, Zhongna 1 ; Chai, Rongyao 1 ; Qiu, Haiping 1 ; Wang, Yanli 1 ; Zhu, Xueming 1 ; Wang, Jiaoyu 1 ; Sun, Guochang 1 ; Lin, Fucheng 1 ;

作者机构: 1.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Inst Plant Protect & Microbiol, Hangzhou 310021, Peoples R China

2.Zhejiang Normal Univ, Coll Chem & Life Sci, Jinhua 310029, Zhejiang, Peoples R China

关键词: Magnaporthe oryzae; MoDHX35; pathogenicity; DExD; H-box protein

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

ISSN:

年卷期: 2022 年 23 卷 16 期

页码:

收录情况: SCI

摘要: The DExD/H-box protein family encompasses a large number of RNA helicases that are involved in RNA metabolism and a variety of physiological functions in different species. However, there is limited knowledge of whether DExD/H-box proteins play a role in the pathogenicity of plant fungal pathogens. In the present work, the DExD/H-box protein MoDHX35, which belongs to the DEAH subfamily, was shown to be crucial in appressoria formation and full virulence of the rice blast fungus, Magnaporthe oryzae. The predicted protein sequence of MoDHX35 had typical DEAH-box domains, showed 47% identity to DHX35 in Homo species, but had no orthologs in Saccharomyces cerevisiae. Deletion of the MoDHX35 gene resulted in reduced tolerance of the mutants to doxorubicin, a nucleic acid synthesis disturbing agent, suggesting the involvement of MoDHX35 in RNA metabolism. MoDHX35-deleted mutants exhibited normal vegetative growth, conidia generation and conidial germination, but showed a reduced appressorium formation rate and attenuated virulence. Our work demonstrates the involvement of DEAH-box protein functions in the pathogenicity of plant fungal pathogens.

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