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Genome-wide identification and expression analysis of the SAUR gene family in foxtail millet (Setaria italica L.)

文献类型： 外文期刊

作者： Ma, Xiaoqian 1 ; Dai, Shutao 2 ; Qin, Na 2 ; Zhu, Cancan 2 ; Qin, Jiafan 3 ; Li, Junxia 2 ;

作者机构： 1.Henan Univ Sci & Technol, Coll Agr, Luoyang 471000, Henan, Peoples R China

2.Henan Acad Agr Sci, Cereal Crops Inst, Zhengzhou 450002, Henan, Peoples R China

3.Luoyang Acad Agr & Forestry Sci, Sweet Potato & Millet Inst, Luoyang 471023, Henan, Peoples R China

关键词： Setaria italic; SAUR gene family; Genome-wide identified; Expression profile; Abiotic stress

期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）

ISSN： 1471-2229

年卷期： 2023 年 23 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundAuxin performs important functions in plant growth and development processes, as well as abiotic stress. Small auxin-up RNA (SAUR) is the largest gene family of auxin-responsive factors. However, the knowledge of the SAUR gene family in foxtail millet is largely obscure.ResultsIn the current study, 72 SiSAUR genes were identified and renamed according to their chromosomal distribution in the foxtail millet genome. These SiSAUR genes were unevenly distributed on nine chromosomes and were classified into three groups through phylogenetic tree analysis. Most of the SiSAUR members from the same group showed similar gene structure and motif composition characteristics. Analysis of cis-acting elements showed that many hormone and stress response elements were identified in the promoter region of SiSAURs. Gene replication analysis revealed that many SiSAUR genes were derived from gene duplication events. We also found that the expression of 10 SiSAURs was induced by abiotic stress and exogenous hormones, which indicated that SiSAUR genes may participated in complex physiological processes.ConclusionsOverall, these results will be valuable for further studies on the biological role of SAUR genes in foxtail development and response to stress conditions and may shed light on the improvement of the genetic breeding of foxtail millet.

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