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Identification, characterization, and expression profiling of the putative U-box E3 ubiquitin ligase gene family in Sorghum bicolor

文献类型： 外文期刊

作者： Fang, Yuanpeng 1 ; Du, Qiaoli 1 ; Yang, Qian 1 ; Jiang, Junmei 2 ; Hou, Xiaolong 1 ; Yang, Zaifu 1 ; Zhao, Degang 3 ; Li, Xiangyang 2 ; Xie, Xin 1 ;

作者机构： 1.Guizhou Univ, Coll Agr, Key Lab Agr Microbiol, Guiyang, Peoples R China

2.Guizhou Univ, State Key Lab Breeding Base Green Pesticide & Agr, Key Lab Green Pesticide & Agr Bioengn, Minist Educ, Guiyang, Peoples R China

3.Guizhou Univ, Coll Life Sci, Inst Agr Bioengn, Key Lab Mt Plant Resources Protect & Germplasm Inn, Guiyang, Peoples R China

4.Guizhou Acad Agr Sci, Guizhou Inst Biotechnol, Guizhou Inst Prataculture, Guizhou Conservat Technol Applicat Engn Res Ctr, Guiyang, Peoples R China

关键词： U-box; expression pattern; abiotic stress; co-regulatory networks; Sorghum bicolor

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：6.064； 五年影响因子：6.843 ）

ISSN：

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： The U-box family is one of the main E3 ubiquitin ligase families in plants. The U-box family has been characterized in several species. However, genome-wide gene identification and expression profiling of the U-box family in response to abiotic stress in Sorghum bicolor remain unclear. In this study, we broadly identified 68 U-box genes in the sorghum genome, including 2 CHIP genes, and 1 typical UFD2 (Ub fusion degradation 2) gene. The U-box gene family was divided into eight subclasses based on homology and conserved domain characteristics. Evolutionary analysis identified 14, 66, and 82 U-box collinear gene pairs in sorghum compared with arabidopsis, rice, and maize, respectively, and a unique tandem repeat pair (SbPUB26/SbPUB27) is present in the sorghum genome. Gene Ontology (GO) enrichment analysis showed that U-box proteins were mainly related to ubiquitination and modification, and various stress responses. Comprehensive analysis of promoters, expression profiling, and gene co-regulation networks also revealed that many sorghum U-box genes may be correlated with multiple stress responses. In summary, our results showed that sorghum contains 68 U-box genes, which may be involved in multiple abiotic stress responses. The findings will support future gene functional studies related to ubiquitination in sorghum.

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