一种水果表达的MYB转录因子调节了Atropa belladonna中的安托西亚尼生物合成
Xiaoqiang Liu1, Tengfei Zhao1, Lina Yuan1
1Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, School of Life Sciences, Southwest University, Chongqing 400715, China.
International journal of molecular sciences
|May 11, 2024
概括
研究人员确定了AbMYB1,一种转录因子,可以积极调节Atropa belladonna中的安素生物合成. 这一发现增强了对Solanaceae水果颜色积累的理解.
科学领域:
- 植物生物学 植物生物学
- 生物化学 生物化学
- 遗传学 是一个遗传学.
背景情况:
- 安西氨酸是植物中重要的水溶性黄色素,影响生长,新陈代谢和动物相互作用.
- 在Solanaceae中,抗生素的积累有所不同,番茄和茄子表现出皮肤特异性的模式,而Atropa belladonna则在整个肉中积累它们.
研究的目的:
- 为了识别和表征R2R3-MYB转录因子 (TF),参与调节Atropa belladonna中的素生物合成.
- 阐明AbMYB1在控制水果内安托素生产中的作用.
主要方法:
- 在A. belladonna组织中对基因表达和安东素水平的关联分析.
- 基因过度表达和RNA干扰 (RNAi) 来研究AbMYB1.1.的功能.
- 对抗生素生物合成基因表达的定量分析 (例如,AbF3H,AbDFR).
主要成果:
- AbMYB1被确定为一种关键的R2R3-MYB TF,在A. belladonna.果实中表达.
- 过度表达AbMYB1显著上调安托素生物合成基因,增加了安托素的产生.
- 通过RNAi介导的AbMYB1抑制导致基因表达减少和酸含量减少.
结论:
- AbMYB1 作为阿特罗帕贝拉多纳中氨酸生物合成的积极调节剂.
- 这一发现为Solanaceae中,特别是整个水果中,安东素积累的遗传调节提供了关键的见解.
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