MYB公司
花青素
叶柄(昆虫解剖学)
生物
突变体
草莓
基因
结构基因
突变
调节基因
拟南芥
倍性
植物
转录因子
生物化学
基因表达调控
膜翅目
作者
Xi Luo,Madison Plunkert,Zi Teng,Kathryn Kuligowska Mackenzie,Liu Guo,Yaguang Luo,Timo Hytönen,Zhongchi Liu
摘要
The R2R3-MYB transcription factor FveMYB10 is a major regulator of anthocyanin pigmentation in the red fruits of strawberry. fvemyb10 loss-of-function mutants form yellow fruits but still accumulate purple-colored anthocyanins in the petioles, suggesting that anthocyanin biosynthesis is under distinct regulation in fruits and petioles. From chemical mutagenesis in the diploid wild strawberry Fragaria vesca, we identified a green petioles (gp)-1 mutant that lacks anthocyanins in petioles. Using mapping-by-sequencing and transient functional assays, we confirmed that the causative mutation resides in a FveMYB10-Like (FveMYB10L) gene and that FveMYB10 and FveMYB10L function independently in the fruit and petiole, respectively. In addition to their tissue-specific regulation, FveMYB10 and FveMYB10L respond differently to changes in light quality, produce distinct anthocyanin compositions, and preferentially activate different downstream anthocyanin biosynthesis genes in their respective tissues. This work identifies a new regulator of anthocyanin synthesis and demonstrates that two paralogous MYB genes with specialized functions enable tissue-specific regulation of anthocyanin biosynthesis in fruit and petiole tissues.
科研通智能强力驱动
Strongly Powered by AbleSci AI