在UV-B中,延长型海马5 (HY5) 和HY5同类型 (HYH) 保持避免阴影的抑制
Ashutosh Sharma1, Ashley J Pridgeon1, Wei Liu2
1School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol, BS8 1TQ, UK.
The Plant journal : for cell and molecular biology
|May 27, 2023
概括
植物使用UV-B光信号来防止避开阴影. 紫外线暴露会激活延长型阴5 (HY5) 和HY5同质 (HYH),以持续抑制避阴反应.
科学领域:
- 植物生物学 植物生物学
- 摄影接收 摄影接收
- 分子信号传递是分子信号传递.
背景情况:
- 植物通过红至远红光比率 (R:FR) 的变化来感知阴影,从而触发阴影避开反应,如阴囊延长.
- 植物染色体相互作用因子 (PIF) 4,5 和 7 在阴影条件下促进阴囊延长.
- 抗紫外线LOCUS 8 (UVR8) 光感受器通过影响PIF4/5.5迅速抑制避免阴影.
研究的目的:
- 调查UV-B抑制避阴的长期机制.
- 阐明延长型尾5 (HY5) 和HY5同质 (HYH) 在UV-B介导的避阴抑制中的作用.
主要方法:
- 分析基因表达变化对UV-B暴露的反应.
- 调查HY5和HYH在避免阴影路径中的监管作用.
- 检查HY5和HYH对激素信号和细胞壁修饰基因的影响.
主要成果:
- HY5和HYH由UV-B上调并维持避阴抑制.
- HY5和HYH抑制细胞壁放松的XYLOGLUCAN ENDOTRANSGLUCOSYLASE/HYDROLASE (XTH) 基因的表达.
- HY5和HYH增加了GA2-OXIDASE1 (GA2ox1) 和GA2ox2的表达,稳定了抑制PIFs的DELLA蛋白.
结论:
- 紫外线R8用于UV-B响应的暂时不同的信号通路.
- 快速的UV-B抑制涉及PIF不稳定,而持续的抑制涉及HY5/HYH介导的转录重编程.
- 这种双重机制确保了对UV-B光的反应中避免阴影的有效调节.
关键词:
阿拉比多普西斯塔利亚纳.德拉·德拉拉 在这里.在HY5中,HY5就是HY5.哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈紫外线 UV-B 是一种紫外线R8 UVR8 紫外线R8吉伯勒林林林林林林林林林林林林林林林林林林林林林避免阴影,避免阴影.更多相关视频
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