Cryptochromes Interact Directly with PIFs to Control Plant Growth in Limiting Blue Light.
Cryptochromes Interact Directly with PIFs to Control Plant Growth in Limiting Blue Light.
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DOI：
10.1016/j.cell.2015.12.018
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发表时间：
2016-01-14
期刊：
影响因子：
64.5
通讯作者：
Chory J
中科院分区：
文献类型：
--
作者：
Pedmale UV;Huang SC;Zander M;Cole BJ;Hetzel J;Ljung K;Reis PAB;Sridevi P;Nito K;Nery JR;Ecker JR;Chory J
喜欢阳光的植物有能力通过感知蓝光和红光波长来检测和避免阴影。高等植物隐花色素（Cryptochromes，简称Cryptochromes）控制植物如何响应蓝光的变化来调节生长。对于生长在树冠下，其中蓝光减少，BH 1和BH 2感知到这种变化，并通过直接接触两个bHLH转录因子，PIF 4和PIF 5作出反应。已知这些因素也受到光敏色素（红色/远红色光感受器）的控制;然而，转录组分析表明，不同光波长诱导的基因调节程序是不同的。我们的研究结果表明，PIF信号通过调节PIF活性全基因组，这些因素整合不同的植物光感受器的结合，以促进不同的光条件下的生长变化。
Sun-loving plants have the ability to detect and avoid shading through sensing of both blue and red light wavelengths. Higher plant cryptochromes (CRYs) control how plants modulate growth in response to changes in blue light. For growth under a canopy, where blue light is diminished, CRY1 and CRY2 perceive this change and respond by directly contacting two bHLH transcription factors, PIF4 and PIF5. These factors are also known to be controlled by phytochromes, the red/far-red photoreceptors; however, transcriptome analyses indicate that the gene regulatory programs induced by the different light wavelengths are distinct. Our results indicate that CRYs signal by modulating PIF activity genome-wide, and that these factors integrate binding of different plant photoreceptors to facilitate growth changes under different light conditions.