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Genome-Wide Characterization and Anthocyanin-Related Expression Analysis of the B-BOX Gene Family in Capsicum annuum L.

文献类型： 外文期刊

作者： Wang, Jin 1 ; Yang, Guangbin 3 ; Chen, Ying 3 ; Dai, Yao 1 ; Yuan, Qiaoling 1 ; Shan, Qingyun 1 ; Pan, Luzhao 1 ; Dai, Li 1 ; Zou, Xuexiao 1 ; Liu, Feng 1 ; Xiong, Cheng 1 ;

作者机构： 1.Hunan Agr Univ, Coll Hort, Changsha, Peoples R China

2.Nanjing Agr Univ, Coll Hort, Nanjing, Peoples R China

3.Hunan Acad Agr Sci, Hunan Vegetable Res Inst, Changsha, Peoples R China

4.Minist Educ, Engn Res Ctr Hort Crop Germplasm Creat & New Vari, Changsha, Peoples R China

关键词： pepper; CaBBXs; duplication; development expression; anthocyanin biosynthesis

期刊名称：FRONTIERS IN GENETICS （ 影响因子：4.772； 五年影响因子：4.933 ）

ISSN：

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： The transcription factors, B-box (BBX), belong to a subfamily of the zinc finger family of proteins and exhibit multiple biological functions in plant growth, development, and abiotic stress response pathways. In this study, a total of 23 CaBBX members were identified using the pepper reference genome database. According to the gene structure, conserved domains, and the phylogenetic tree, 23 CaBBX genes were divided into four groups, wherein the analysis of the promoter region indicated the presence of cis-acting elements related to plant development, hormones, and stress response. Interspecies collinearity analysis showed that the CaBBXs had three duplicated gene pairs, and the highest gene density was found on chromosomes 2 and 7. Transcriptome RNA-seq data and quantitative polymerase chain reaction (qRT-PCR) analysis of pepper plants spanning the entire period showed that more than half of the CaBBX genes were widely expressed in diversity tissues of pepper. Co-expression network analysis indicated that the CaBBXs and the anthocyanin structural genes had a close co-expression relationship. Thus, it was reasonably speculated that the CaBBX genes may be involved in the regulation of anthocyanin biosynthesis. Overall, this study involved the genome-wide characterization of the CaBBX family and may serve as a solid foundation for further investigations on CaBBX genes involved in the anthocyanin synthesis mechanisms and development in pepper.

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