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Chitinase Gene FoChi20 in Fusarium oxysporum Reduces Its Pathogenicity and Improves Disease Resistance in Cotton

文献类型： 外文期刊

作者： Lou, Hui 1 ; Zhu, Jincheng 1 ; Zhao, Zengqiang 1 ; Han, Zegang 2 ; Zhang, Wei 1 ;

作者机构： 1.Shihezi Univ, Agr Coll, Key Lab Oasis Ecoagr, Shihezi 832000, Peoples R China

2.Zhejiang Univ, Plant Precis Breeding Acad, Coll Agr & Biotechnol, Zhejiang Prov Key Lab Crop Genet Resources,Adv See, Hangzhou 310000, Peoples R China

3.Xinjiang Acad Agr & Reclamat Sci, Biotechnol Res Inst, Shihezi 832000, Peoples R China

4.Xinjiang Acad Agr & Reclamat Sci, Cotton Res Inst, Shihezi 832000, Peoples R China

关键词： cotton; root secretion; Fusarium oxysporum; chitinase genes; Fusarium wilt

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.6 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 15 期

页码：

收录情况： SCI

摘要： Chitinase genes, as a class of cell wall hydrolases, are essential for the development and pathogenesis of Fusarium oxysporum f.sp. vasinfectum (F. ox) in cotton, but related research focused on chitinase genes are limited. This study explored two island cotton root secretions from the highly resistant cultivar Xinhai 41 and sensitive cultivar Xinhai 14 to investigate their interaction with F. ox by a weighted correlation network analysis (WGCNA). As a result, two modules that related to the fungal pathogenicity emerged. Additionally, a total of twenty-five chitinase genes were identified. Finally, host-induced gene silencing (HIGS) of FoChi20 was conducted, and the cotton plants showed noticeably milder disease with a significantly lower disease index than the control. This study illuminated that chitinase genes play crucial roles in the pathogenicity of cotton wilt fungi, and the FoChi20 gene could participate in the pathogenesis of F. ox and host-pathogen interactions, which establishes a theoretical framework for disease control in Sea Island cotton.

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