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植物染色体相互作用因子3调节低光信号,以调节Uncaria rhynchophylla中的异素生物合成

Xue Li¹, Hong-Qiang Han¹, Ya-Li Wei¹

¹School of Chinese Ethnic Medicine, Guizhou Minzu University, 550025, Guiyang, Guizhou, China.

Scientific reports

|October 24, 2024

概括

植物染色体相互作用因子 (PIFs) 调节植物对光的反应. 这项研究表明,UrPIF3通过上调关键基因,在低光下促进了Uncaria rhynchophylla的 Isorhynchophylline (IRN) 合成.

科学领域:

植物分子生物学植物分子生物学
植物生理学植物生理学
二次代谢物生物合成二次代谢物生物合成

背景情况:

植物染色体相互作用因子 (PIF) 是植物光信号和二次代谢物合成的关键调节者.
在二次新陈代谢中PIFs的作用因植物物种而异.
来自Uncaria rhynchophylla的有价值的药用化合物伊索林科菲林 (IRN) 被低光诱导,但底层的PIF调节是未知的.

研究的目的:

研究PIF蛋白在调节Uncaria rhynchophylla在低光条件下的 Isorhynchophylline (IRN) 生物合成中的作用.

主要方法:

在Uncaria rhynchophylla中的PIF蛋白 (UrPIF3) 的识别和表征.
在不同的光照条件下分析UrPIF3表达与IRN生物合成基因 (UrSGD,UrSTR) 的相关性.
酵母单杂交和双化酶测定以确认直接相互作用和转录调节.
基因沉默实验,以评估UrPIF3对IRN合成和基因表达的影响.

主要成果:

一种新的PIF蛋白,UrPIF3,被确定并确认在核中定位.
在低光和恢复光下,UrPIF3表达与关键的IRN生物合成基因 (UrSGD,UrSTR) 有积极的相关性.
在UrPIF3中,UrSGD表达式直接升级.
沉默UrPIF3减少了IRN合成和UrSGD和UrSTR的表达.

结论:

在Uncaria rhynchophylla中,UrPIF3充当IRN生物合成的积极调节者.
在弱光下,UrPIF3通过直接调节UrSGD和间接调节UrSTR来促进IRN合成.

关键词:

个人投资基金 (PIFs) 是一个这种植物是Uncaria rhynchophylla.这是一条神经突触线.低亮度的低亮度是因为低亮度.

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