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Genome-wide identification and expression analysis of the AUX/IAA gene family in turnip (Brassica rapa ssp. rapa)

文献类型： 外文期刊

作者： Xu, Huanwen 1 ; Liu, Yu 3 ; Zhang, Shengmei 1 ; Shui, Deju 1 ; Xia, Zhewen 4 ; Sun, Ji 1 ;

作者机构： 1.Wenzhou Acad Agr Sci, Coll Agr & Biotechnol, Wenzhou Vocat Coll Sci & Technol, Wenzhou 325006, Zhejiang, Peoples R China

2.Wenzhou Acad Agr Sci, Wenzhou Vocat Coll Sci & Technol, Southern Zhejiang Key Lab Crop Breeding, Wenzhou 325006, Zhejiang, Peoples R China

3.Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou Key Lab Resource Plant Innovat & Utilizat, Wenzhou 325005, Zhejiang, Peoples R China

4.Wenzhou Lucheng Dist Agr Ind Inst, Wenzhou 325000, Zhejiang, Peoples R China

关键词： Genome-wide analysis; AUX; IAA gene family; Phylogenetic relationship; Expression analysis; Brassica rapa ssp; rapa

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/indoleacetic acid (AUX/IAA) genes encoding short-lived proteins participate in AUX signaling transduction and play crucial roles in plant growth and development. Although the AUX/IAA gene family has been identified in many plants, a systematic analysis of AUX/IAA genes in Brassica rapa ssp. rapa has not yet been reported.ResultsWe performed a comprehensive genome-wide analysis and found 89 AUX/IAA genes in turnip based on the conserved AUX/IAA domain (pfam02309). Phylogenetic analysis of AUX/IAA genes from turnip, Arabidopsis, and cabbage revealed that these genes cluster into six subgroups (A1, A2, A3, A4, B1, and B2). The motif distribution was also conservative among the internal members of the clade. Enhanced yellow fluorescent protein (EYFP) signals of BrrIAA-EYFPs showed that BrrIAA members functioned as nucleoproteins. Moreover, transcriptional analysis revealed that the expression patterns of AUX/IAA genes in turnip were tissue-dependent. Because orthologs have similar biological functions and interaction networks in plant growth and development, BrrIAA66 in turnip possibly played a role in embryo axis formation, vascular development, lateral root formation, and floral organ development by interacting with BrrARF19 and BrrTIR1.ConclusionThese results provide a theoretical basis for further investigation of BrrAUX/IAA genes and lay the foundation for functional analysis of BrrIAA66 in turnip.

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