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Genome-wide characterization and expression analysis of soybean trihelix gene family

文献类型： 外文期刊

作者： Liu, Wei 1 ; Zhang, Yanwei 1 ; Li, Wei 1 ; Lin, Yanhui 3 ; Wang, Caijie 1 ; Xu, Ran 1 ; Zhang, Lifeng 1 ;

作者机构： 1.Shandong Acad Agr Sci, Crop Res Inst, Jinan, Shandong, Peoples R China

2.Shandong Engn Lab Featured Crops, Jinan, Peoples R China

3.Hainan Acad Agr Sci, Inst Food Crops, Haikou, Hainan, Peoples R China

关键词： Soybean; Trihelix transcription factor; Genome-wide analysis; Gene expression

期刊名称：PEERJ （ 影响因子：2.984； 五年影响因子：3.369 ）

ISSN： 2167-8359

年卷期： 2020 年 8 卷

页码：

收录情况： SCI

摘要： Trihelix transcription factors play multiple roles in plant growth, development and various stress responses. In this study, we identified 71 trihelix family genes in the soybean genome. These trihelix genes were located at 19 out of 20 soybean chromosomes unevenly and were classified into six distinct subfamilies: GT-1, GT-2, GT gamma, SIP1, SH4 and GT delta. The gene structure and conserved functional domain of these trihelix genes were similar in the same subfamily but diverged between different subfamilies. Thirteen segmental duplicated gene pairs were identified and all of them experienced a strong purifying selective pressure during evolution. Various stress-responsive cis-elements presented in the promoters of soybean trihelix genes, suggesting that the trihelix genes might respond to the environmental stresses in soybean. The expression analysis suggests that trihelix genes are involved in diverse functions during soybean development, flood or salinity tolerance, and plant immunity. Our results provide genomic information of the soybean trihelix genes and a basis for further characterizing their roles in response to environmental stresses.

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