Song Junyi, Liu Qijun, Hu Biru, Wu Wenjian
College of Science, National University of Defense Technology, Changsha 410073, China.
State Key Lab of Nuclear, Biological and Chemical Protection for Civilian, Beijing 102205, China.
Int J Mol Sci. 2017 Jun 5;18(6):1194. doi: 10.3390/ijms18061194.
The influence of temperature on plants is essential. However, our knowledge on the intricate regulation process underlying heat stress (HS) response in plants is limited. Recently, information about thermal sensors in vivo has begun to emerge. In this study, another primary environmental stimulus, light, was verified once again to work with temperature synergistically on plants, through the modulation of numerous biological processes. With the application of transcriptomic analysis, a substantial number of heat-responsive genes were detected involved in both light- and phytohormone-mediated pathways in During this process, phytoreceptor phyB acts as a molecular switch to turn on or turn off several other genes HS response, under different light conditions. Furthermore, a morphological study showed the afunction of phyB enhanced plants thermal tolerance, confirming the important role of this phytochrome in temperature perception and response in plants. This study adds data to the picture of light and temperature signaling cross-talk in plants, which is important for the exploration of complicated HS responses or light-mediated mechanisms. Furthermore, based on its influence on thermal response in both morphological and physiological levels, phyB is a photoreceptor, as revealed before, as well as an essential thermal sensor in plants.
温度对植物的影响至关重要。然而，我们对植物热应激（HS）反应背后复杂调控过程的了解有限。最近，关于体内热传感器的信息开始出现。在本研究中，另一种主要的环境刺激因素——光，再次被证实可通过调节众多生物学过程与温度协同作用于植物。通过转录组分析的应用，在[具体过程未提及]中检测到大量热响应基因参与光和植物激素介导的途径。在此过程中，植物光受体phyB在不同光照条件下作为分子开关开启或关闭其他几个基因的HS反应。此外，一项形态学研究表明phyB功能缺失增强了植物的热耐受性，证实了这种植物色素在植物温度感知和反应中的重要作用。这项研究为植物光和温度信号相互作用的图景增添了数据，这对于探索复杂的HS反应或光介导机制很重要。此外，基于其在形态和生理水平上对热反应的影响，phyB如之前所揭示的那样是一种光受体，也是植物中一种重要的热传感器。
