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Systematic Identification of Acer rubrum bZIP Transcription Factors and Their Potential Role in Anthocyanin Accumulation under Low Temperature with Light

文献类型： 外文期刊

作者： Zhao, Yue 1 ; Afzal, Shah Faheem 2 ; Chen, Zhu 2 ; Kamal, Khan Arif 1 ; Fei, Yuzhi 2 ; Meng, Xin 1 ; Ren, Jie 2 ; Liu, Hua 1 ;

作者机构： 1.Anhui Agr Univ, Sch Forestry & Landscape Architecture, Hefei 230036, Peoples R China

2.Anhui Acad Agr Sci, Inst Agr Engn, Hefei 230031, Peoples R China

关键词： Acer rubrum; bZIP transcription factor; light; low temperature; anthocyanin accumulation

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：1.2； 五年影响因子：1.3 ）

ISSN： 0031-9457

年卷期： 2024 年 93 卷 11 期

页码：

收录情况： SCI

摘要： Acer rubrum is an important garden color-leafed plant. Its leaves will turn red in autumn, which is of great ornamental value. The leaf color change in Acer rubrum is closely associated with anthocyanins accumulation. In anthocyanin synthesis and accumulation, various transcription factor families play significant regulatory roles, including the basic (region) leucine zipper (bZIP). However, there is no report on the systematic identification and functional analysis of the bZIPs in Acer rubrum. In this study, 137 bZIPs distributed on 29 chromosomes of Acer rubrum were identified and renamed according to their locations on the chromosomes. According to the constructed bZIP phylogenetic tree of Arabidopsis thaliana and Acer rubrum, bZIPs were divided into 13 groups. Two pairs of bZIP genes were involved in tandem duplication, and 106 segmental duplication gene pairs were found. Cis-acting elements in the promoter region of these bZIP genes were analyzed. The results of promoter analysis showed that many elements were closely related to light conditions, hormone responses, and abiotic stress factors. Among them, the cis-acting elements related to light response were most abundant and prominent. The results of anthocyanin determination showed that anthocyanin contents in the leaves of Acer rubrum increased significantly under low temperature with light. In addition, gene expression analysis showed that compared to other ArbZIPs, ArbZIP137, ArbZIP136, ArbZIP114, ArbZIP130, and ArbZIP14 showed a more pronounced increase in gene expression both under low- temperature conditions and under light conditions. From the correlation analysis, there was a high correlation between ArbZIPs and several anthocyanin-regulated transcription factors, including ArMYBs, ArbHLH and ArWD40s. Conclusively, the bZIP genes in Acer rubrum were identified and analyzed, providing a foundational basis for future studies on their function and significantly enhancing our understanding of the color mechanism of Acer rubrum.

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