一种特定于细胞类型的调节子,控制单二醇类生物合成,并具有反和前激活循环
Chenxin Li1,2,3, Joshua C Wood1, Brieanne Vaillancourt1
1Center for Applied Genetic Technologies, University of Georgia, Athens, 30601, GA, USA.
The New phytologist
|November 10, 2025
概括
研究人员确定了特定的转录因子 (TFs),调节罕见植物细胞类型中的单烯醇 (MIA) 生物合成. 这些TF保存了数百万年,揭示了发现植物代谢调节者的强大策略.
科学领域:
- 植物生物学 植物生物学
- 分子进化是分子进化的过程.
- 生物化学 生物化学
背景情况:
- 单烯醇类化合物 (MIAs) 是具有复杂生物合成途径的重要植物天然产物.
- 了解MIA生物合成的调节对于植物科学和药物发现至关重要.
研究的目的:
- 为了研究MIA生物合成基因和共表达转录因子 (TFs) 的细胞类型特异性,在两个星座物种中.
- 为了确定跨不同植物系的MIA生物合成的保护性调节机制.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 在Camptotheca acuminata的茎.
- 与MIA生物合成基因共同表达的TFs的识别和特征.
- 在Catharanthus roseus.中建立基因调节网络.
主要成果:
- 在C. acuminata中,MIA生物合成基因局部存在于罕见细胞群中.
- 在C. acuminata中发现MYB和bHLHTF与MIA基因共同表达.
- 在C. roseus中,正义TFs是异质细胞特异的,并激活MIA生物合成,表明受保护的调节.
结论:
- 这项研究强调了特异性TF类的共同选择,用于在Asterid物种中对细胞类型特定的MIA生物合成调节.
- 保存的TF-生物合成基因跨物种的共同表达是发现植物代谢调节者的强有力的策略.
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