Genome-Wide Identification and Analysis of the BBX Gene Family and Its Role in Carotenoid Biosynthesis in Wolfberry (Lycium barbarum L.)
文献类型： 外文期刊
作者： Yin, Yue 1 ; Shi, Hongyan 1 ; Mi, Jia 2 ; Qin, Xiaoya 2 ; Zhao, Jianhua 2 ; Zhang, Dekai 1 ; Guo, Cong 1 ; He, Xinru 2 ; An, Wei 2 ; Cao, Youlong 2 ; Zhu, Jianhua 3 ; Zhan, Xiangqiang 1 ;
作者机构： 1.Northwest A&F Univ, Coll Hort, State Key Lab Crop Stress Biol Arid Areas, Xianyang 712100, Shaanxi, Peoples R China
2.Ningxia Acad Agr & Forestry Sci, Natl Wolfberry Engn Res Ctr, Yinchuan 751002, Ningxia, Peoples R China
3.Univ Maryland, Dept Plant Sci & Landscape Architecture, College Pk, MD 20742 USA
关键词： Lycium barbarum; LbaBBX gene family; LbaBBX gene expression; carotenoid biosynthesis; protein subcellular localization
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）
ISSN：
年卷期： 2022 年 23 卷 15 期
页码：
收录情况： SCI
摘要： The B-box proteins (BBXs) are a family of zinc-finger transcription factors with one/two B-Box domain(s) and play important roles in plant growth and development as well as stress responses. Wolfberry (Lycium barbarum L.) is an important traditional medicinal and food supplement in China, and its genome has recently been released. However, comprehensive studies of BBX genes in Lycium species are lacking. In this study, 28 LbaBBX genes were identified and classified into five clades by a phylogeny analysis with BBX proteins from Arabidopsis thaliana and the LbaBBXs have similar protein motifs and gene structures. Promoter cis-regulatory element prediction revealed that LbaBBXs might be highly responsive to light, phytohormone, and stress conditions. A synteny analysis indicated that 23, 20, 8, and 5 LbaBBX genes were orthologous to Solanum lycopersicum, Solanum melongena, Capsicum annuum, and Arabidopsis thaliana, respectively. The gene pairs encoding LbaBBX proteins evolved under strong purifying selection. In addition, the carotenoid content and expression patterns of selected LbaBBX genes were analyzed. LbaBBX2 and LbaBBX4 might play key roles in the regulation of zeaxanthin and antheraxanthin biosynthesis. Overall, this study improves our understanding of LbaBBX gene family characteristics and identifies genes involved in the regulation of carotenoid biosynthesis in wolfberry.
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