Frontiers in Plant Science | |
Comprehensive analyses of the citrus WRKY gene family involved in the metabolism of fruit sugars and organic acids | |
Plant Science | |
Ling Liao1  Bo Xiong1  Xinxia Yang1  Chunmei Yin1  Zhihui Wang1  Xingyu Lin1  Kexin Liu1  Qin Li1  Guochao Sun1  Siya He1  Jiaxian He1  Mingfei Zhang1  Wen Lu1  Xun Wang1  | |
[1] College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China; | |
关键词: WRKY gene family; citrus; fruit quality; sugar; organic acid; expression network; | |
DOI : 10.3389/fpls.2023.1264283 | |
received in 2023-07-20, accepted in 2023-08-24, 发布年份 2023 | |
来源: Frontiers | |
【 摘 要 】
Sugars and organic acids are the main factors determining the flavor of citrus fruit. The WRKY transcription factor family plays a vital role in plant growth and development. However, there are still few studies about the regulation of citrus WRKY transcription factors (CsWRKYs) on sugars and organic acids in citrus fruit. In this work, a genome-wide analysis of CsWRKYs was carried out in the citrus genome, and a total of 81 CsWRKYs were identified, which contained conserved WRKY motifs. Cis-regulatory element analysis revealed that most of the CsWRKY promoters contained several kinds of hormone-responsive and abiotic-responsive cis-elements. Furthermore, gene expression analysis and fruit quality determination showed that multiple CsWRKYs were closely linked to fruit sugars and organic acids with the development of citrus fruit. Notably, transcriptome co-expression network analysis further indicated that three CsWRKYs, namely, CsWRKY3, CsWRKY47, and CsWRKY46, co-expressed with multiple genes involved in various pathways, such as Pyruvate metabolism and Citrate cycle. These CsWRKYs may participate in the metabolism of fruit sugars and organic acids by regulating carbohydrate metabolism genes in citrus fruit. These findings provide comprehensive knowledge of the CsWRKY family on the regulation of fruit quality.
【 授权许可】
Unknown
Copyright © 2023 Zhang, Lu, Yang, Li, Lin, Liu, Yin, Xiong, Liao, Sun, He, He, Wang and Wang
【 预 览 】
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