The bZIP transcription factor SlAREB1 regulates anthocyanin biosynthesis in response to low temperature in tomato

被引:62
作者
Xu, Zijian [1 ,2 ,3 ]
Wang, Jiachun [1 ,2 ,3 ]
Ma, Yongbo [1 ,2 ,3 ]
Wang, Fan [1 ,2 ,3 ]
Wang, Jingrong [1 ,2 ,3 ]
Zhang, Yong [1 ,2 ,3 ]
Hu, Xiaohui [1 ,2 ,3 ]
机构
[1] Northwest A&F Univ, Coll Hort, Yangling 712100, Shaanxi, Peoples R China
[2] Minist Agr, Key Lab Protected Hort Engn Northwest, Yangling 712100, Shaanxi, Peoples R China
[3] Shaanxi Protected Agr Res Ctr, Yangling 712100, Shaanxi, Peoples R China
基金
国家重点研发计划;
关键词
Solanum lycopersicum; abscisic acid; transcription factor SlAREB1; low temperature; anthocyanin; DROUGHT STRESS TOLERANCE; ABSCISIC-ACID; FREEZING TOLERANCE; FLAVONOID BIOSYNTHESIS; INDUCED EXPRESSION; GENE-EXPRESSION; COLORFUL MODEL; COLD; ARABIDOPSIS; PROTEIN;
D O I
10.1111/tpj.16224
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Low temperature and abscisic acid (ABA) are the two main factors that induce anthocyanin synthesis; however, their potential relationships in governing anthocyanin biosynthesis in Solanum lycopersicum (tomato) seedlings remains unclear. Our study revealed the involvement of the transcription factor SlAREB1 in the low-temperature response of tomato seedlings via the ABA-dependent pathway, for a specific temperature range. The overexpression of SlAREB1 enhanced the expression of anthocyanin-related genes and the accumulation of anthocyanins, especially under low-temperature conditions, whereas silencing SlAREB1 dramatically reduced gene expression and anthocyanin accumulation. There is a direct interaction between SlAREB1 and the promoters of SlDFR and SlF3 ' 5 ' H, which are structural genes that impact anthocyanin biosynthesis. SlAREB1 can regulate anthocyanins through controlling SlDFR and SlF3 ' 5 ' H expression. Accordingly, SlAREB1 takes charge of regulating anthocyanin biosynthesis in tomato seedlings via the ABA-dependent pathway at low temperatures.
引用
收藏
页码:205 / 219
页数:15
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