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Genome-Wide Analysis of the Banana WRKY Transcription Factor Gene Family Closely Related to Fruit Ripening and Stress

文献类型： 外文期刊

作者： Jia, Caihong 1 ; Wang, Zhuo 2 ; Wang, Jingyi 2 ; Miao, Hongxia 2 ; Zhang, Jianbin 2 ; Xu, Biyu 2 ; Liu, Juhua 2 ; Jin, Zhiqiang 2 ; Liu, Jihong 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Hort & Forestry Sci, Key Lab Hort Plant Biol, Wuhan 430070, Peoples R China

2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Trop Crop Biotechnol, Minist Agr, Haikou 571101, Hainan, Peoples R China

3.Chinese Acad Trop Agr Sci, Hainan Acad Trop Agr Resource, Hainan Key Lab Protect & Utilizat Trop Bioresourc, Haikou 571101, Hainan, Peoples R China

关键词： WRKY; banana; stress; expression analysis

期刊名称：PLANTS-BASEL （ 影响因子：4.658； 五年影响因子：4.827 ）

ISSN：

年卷期： 2022 年 11 卷 5 期

页码：

收录情况： SCI

摘要： WRKY transcription factors (TFs) play an important role in plant responses to biotic and abiotic stress as well as in plant growth and development. In the present study, bioinformatics methods were used to identify members of the WRKY transcription factor family in the Musa acuminata (DH-Pahang) genome (version 2). A total of 164 MaWRKYs were identified and phylogenetic analysis showed that MaWRKYs could be categorized into three subfamilies. Overall, the 162 MaWRKYs were distributed on 11 chromosomes, and 2 genes were not located on the chromosome. There were 31 collinear genes from segmental duplication and 7 pairs of genes from tandem duplication. RNA-sequencing was used to analyze the expression profiles of MaWRKYs in different fruit development, ripening stages, under various abiotic and biotic stressors. Most of the MaWRKYs showed a variety of expression patterns in the banana fruit development and ripening stages. Some MaWRKYs responded to abiotic stress, such as low temperature, drought, and salt stress. Most differentially expressed MaWRKYs were downregulated during banana's response to Foc TR4 infection, which plays an important role in physiological regulation to stress. Our findings indicate that MaWRKY21 directly binds to the W-box of the MaICS promoter to decrease MaICS transcription and then reduce the enzyme activity. These studies have improved our understanding of the molecular basis for the development and stress resistance of an important banana variety.

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