Genome-Wide Identification and Expression Analyses of the Cotton AGO Genes and Their Potential Roles in Fiber Development and Stress Response
文献类型： 外文期刊
作者： Fu, Mingchuan 1 ; Chen, Yizhen 1 ; Li, Hao 1 ; Wang, Liguo 1 ; Liu, Renzhong 1 ; Liu, Zhanji 1 ;
作者机构： 1.Shandong Acad Agr Sci, Inst Ind Crops, Minist Agr & Rural Affairs, Key Lab Cotton Breeding & Cultivat Huang Huai Hai, Jinan 250100, Peoples R China
关键词： cotton; AGO gene family; expression pattern; Verticillium wilt; drought and salt stress
期刊名称：GENES （ 影响因子：4.141； 五年影响因子：4.474 ）
ISSN：
年卷期： 2022 年 13 卷 8 期
页码：
收录情况： SCI
摘要： Argonaute proteins (AGOs) are indispensable components of RNA silencing. However, systematic characterization of the AGO genes have not been completed in cotton until now. In this study, cotton AGO genes were identified and analyzed with respect to their evolution and expression profile during biotic and abiotic stresses. We identified 14 GaAGO, 14 GrAGO, and 28 GhAGO genes in the genomes of Gossypium arboreum, Gossypium raimondii, and Gossypium hirsutum. Cotton AGO proteins were classified into four subgroups. Structural and functional conservation were observed in the same subgroups based on the analysis of the gene structure and conserved domains. Twenty-four duplicated gene pairs were identified in GhAGO genes, and all of them exhibited strong purifying selection during evolution. Moreover, RNA-seq analysis showed that most of the GhAGO genes exhibit high expression levels in the fiber initiation and elongation processes. Furthermore, the expression profiles of GhAGO genes tested by quantitative real-time polymerase chain reaction (qPCR) demonstrated that they were sensitive to Verticillium wilt infection and salt and drought stresses. Overall, our results will pave the way for further functional investigation of the cotton AGO gene family, which may be involved in fiber development and stress response.
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