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Genome-Wide Characterization and Expression Profiling of HD-Zip Genes in ABA-Mediated Processes in Fragaria vesca

文献类型: 外文期刊

作者: Wang, Yong 1 ; Fan, Junmiao 1 ; Wu, Xinjie 1 ; Guan, Ling 2 ; Li, Chun 1 ; Gu, Tingting 1 ; Li, Yi 3 ; Ding, Jing 1 ;

作者机构: 1.Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210023, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Pomol, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing 210014, Peoples R China

3.Univ Connecticut, Dept Plant Sci & Landscape Architecture, Storrs, CT 06269 USA

关键词: HD-Zip; Fragaria vesca; ABA; fruit; expression

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 23 期

页码:

收录情况: SCI

摘要: Members of homeodomain-leucine zipper (HD-Zip) transcription factors can play their roles by modulating abscisic acid (ABA) signaling in Arabidopsis. So far, our knowledge of the functions of HD-Zips in woodland strawberries (Fragaria vesca), a model plant for studying ABA-mediated fruit ripening, is limited. Here, we identified a total of 31 HD-Zip genes (FveHDZ1-31) in F. vesca, and classified them into four subfamilies (I to IV). Promoter analyses show that the ABA-responsive element, ABRE, is prevalent in the promoters of subfamily I and II FveHDZs. RT-qPCR results demonstrate that 10 of the 14 investigated FveHDZs were consistently >1.5-fold up-regulated or down-regulated in expression in response to exogenous ABA, dehydration, and ABA-induced senescence in leaves. Five of the six consistently up-regulated genes are from subfamily I and II. Thereinto, FveHDZ4, and 20 also exhibited significantly enhanced expression along with increased ABA content during fruit ripening. In yeast one-hybrid assays, FveHDZ4 proteins could bind the promoter of an ABA signaling gene FvePP2C6. Collectively, our results strongly support that the FveHDZs, particularly those from subfamilies I and II, are involved in the ABA-mediated processes in F. vesca, providing a basis for further functional characterization of the HD-Zips in strawberry and other plants.

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