该AaaBBX21-AaHY5模块调节了Artemisia annua L中的光调节的艺术素生物合成
Weizhi He1, Hang Liu1, Zhangkuanyu Wu1
1Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
Journal of integrative plant biology
|July 9, 2024
概括
暴露于光线可以通过调节关键的转录因子来促进甜蜜木中素的产生. 这项研究确定了一种涉及延长型HY5 (HY5) 和AABBX21的复合体,当它在黑暗中不受构成性光形致源1 (COP1) 的抑制时,会激活素生物合成基因.
科学领域:
- 植物分子生物学 植物分子生物学
- 生物化学 生化学
- 遗传学 是一个遗传学.
背景情况:
- 素是一种关键的抗疟疾化合物,是由Artemisia annua L. L. 产生的.
- 光能增强甲素的产生,但调节机制尚不清楚.
- 延长型海波5 (HY5) 是一种已知的光信号转录因子.
研究的目的:
- 阐明光调节艺术胺素生物合成的分子机制.
- 识别关键的调节因素及其对光反应的相互作用.
- 了解HY5及其相互作用体在素生产中的作用.
主要方法:
- 转录组分析以确定相互作用的因素.
- 酵母二杂交选蛋白相互作用的方法.
- 在不同的光照条件下分析基因表达和蛋白质积累.
主要成果:
- 单独aaHY5并没有激活素生物合成基因.
- 一种特异于三体的B盒转录因子 AaBBX21 与 AaHY5.5 相互作用.
- AaHY5-AaBBX21复合体与AaCOP1一起调节艺术素生物合成基因,AaCOP1在黑暗中抑制这个复合体.
结论:
- 一个涉及AaHY5,AaBBX21和AaCOP1的新型调节途径控制了光诱导的素生物合成.
- 这种复杂的机制解释了光如何增强Artemisia annua.中的素的产生.
- 这些发现提供了关于植物中光介导的类生物合成的见解.
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