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FocECM33, a GPI-anchored protein, regulates vegetative growth and virulence in Fusarium oxysporum f. sp. cubense tropical race 4

文献类型： 外文期刊

作者： Huang, Huoqing 1 ; Zhang, Xiaoxia 2 ; Zhang, Yong 3 ; Yi, Ganjun 1 ; Xie, Jianghui 4 ; Viljoen, Altus 5 ; Wang, Wei 1 ; Mostert, Diane 5 ; Fu, Gang 6 ; Peng, Changcao 1 ; Xiang, Dandan 2 ; Li, Chunyu 2 ; Liu, Siwen 2 ;

作者机构： 1.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agro b, Guangzhou 510642, Guangdong, Peoples R China

2.Guangdong Acad Agr Sci, Key Lab South Subtrop Fruit Biol & Genet Resource, Key Lab Trop & Subtrop Fruit Tree Res Guangdong P, Minist Agr,Inst Fruit Tree Res, Guangzhou 510640, Guangdong, Peoples R China

3.Univ Massachusetts, Dept Biochem & Mol Biol, Amherst, MA 01003 USA

4.Chinese Acad Trop Agr Sci, Inst Trop Bioscience & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Minist Agr, Haikou 571101, Hainan, Peoples R China

5.Univ Stellenbosch, Dept Plant Pathol, Stellenbosch, South Africa

6.Guangxi Acad Agr Sci, Inst Plant Protect, Guangxi Key Lab Biol Crop Dis & Insect Pests, Nanning 530007, Peoples R China

关键词： Fusarium oxysporum f; Sp; cubense; GPI-Anchored protein; Vegetative growth; Virulence

期刊名称：FUNGAL BIOLOGY （ 影响因子：2.91； 五年影响因子：3.435 ）

ISSN： 1878-6146

年卷期： 2022 年 126 卷 3 期

页码：

收录情况： SCI

摘要： ECM33, a glycosylphosphatidylinositol (GPI)-anchored protein, is important for fungal development and infection through regulating fungal cell wall integrity, however, the functions of its orthologs in pathogenesis have not been characterized in Fusarium oxysporum. Here, we discovered a GPI-anchored protein, FocECM33, which is required for vegetative growth and virulence of Fusasium oxysporum f. sp. cubense tropical race 4 (Foc TR4). FocECM33 was highly upregulated during the early infection process of Foc TR4 in banana roots. The targeted disruption of FocECM33 led to decreased hyphal growth, increased sensitivity to cell wall stresses and reduced virulence on banana plantlets. Furthermore, DFocECM33 mutant demonstrated a cell morphology defect, elevated ROS production and increased chitin content. Transcriptome analysis showed that FocECM33 has a significant influence on the production of various secondary metabolites and regulation of many biosynthetic processes in Foc TR4. Taken together, it seems FocECM33 contributes to the virulence of Foc TR4 through regulating the process of hyphal growth, ROS production and chitin synthesis. (c) 2022 The Authors. Published by Elsevier Ltd on behalf of British Mycological Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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