Genome-wide identification and expression analysis of the bHLH gene family in passion fruit (Passiflora edulis) and its response to abiotic stress

文献类型： 外文期刊

第一作者： Liang, Jianxiang

作者： Liang, Jianxiang;An, Chang;Yao, Yuanbin;Wang, Lulu;Aslam, Mohammad;Cheng, Yan;Qin, Yuan;Zheng, Ping;Wang, Xiaomei;Zhang, Wenbin;Fang, Yunying;An, Chang;Wang, Lulu;Qin, Yuan;Liu, Ruoyu;Qin, Yuan

作者机构：

关键词： Passion fruit; bHLH gene family; Evolutionary analyses; Flower and fruit development; Abiotic stress response

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）

ISSN： 0141-8130

年卷期： 2023 年 225 卷

页码：

收录情况： SCI

摘要： Passion fruit is a tropical fruit crop with significant agricultural, economic and ornamental values. The growth and development of passion fruit are greatly affected by climatic conditions. In plants, the basic helix-loop-helix (bHLH) gene family plays essential roles in the floral organ and fruit development, as well as stress response. However, the characteristics and functions of the bHLH genes of passion fruit remain unclear. Here, 138 passion fruit bHLH members were identified and classified into 20 subfamilies. The structural analysis illustrated that PebHLH proteins of the specific subfamily are relatively conserved. Collinearity analysis indicated that the expansion of the PebHLH gene family mainly took place by segmental duplication, and the structural diversity of duplicated genes might contribute to their functional diversity. PebHLHs, which potentially regulate different floral organ and fruit development, were further screened out, and many of these genes were differentially expressed under various stress treatments. The co-presence of different cis-regulatory elements involved in developmental regulation, hormone and stress responses in the promoter regions of PebHLHs might be closely related to their diverse regulatory roles. Overall, this study will be helpful for further functional investigation of PebHLHs and provides clues for improvement of the passion fruit breeding.

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