Department of Botany and Plant Biology, University of Geneva, Sciences III, CH-1211 Geneva 4, Switzerland.
Trends Plant Sci. 2012 Apr;17(4):230-7. doi: 10.1016/j.tplants.2012.01.007. Epub 2012 Feb 9.
Ultraviolet-B radiation (UV-B) is a key environmental signal that is specifically perceived by plants to promote UV acclimation and survival in sunlight. Whereas the plant photoreceptors for visible light are rather well characterised, the UV-B photoreceptor UVR8 was only recently described at the molecular level. Here, we review the current understanding of the UVR8 photoreceptor-mediated pathway in the context of UV-B perception mechanism, early signalling components and physiological responses. We further outline the commonalities in UV-B and visible light signalling as well as highlight differences between these pathways.
紫外线-B 辐射（UV-B）是一种关键的环境信号，植物专门通过它来促进在阳光下的 UV 适应和生存。虽然植物对可见光的光感受器已经得到了很好的描述，但直到最近才在分子水平上描述了 UV-B 光感受器 UVR8。在这里，我们回顾了 UVR8 光感受器介导的途径在 UV-B 感知机制、早期信号成分和生理反应方面的最新理解。我们进一步概述了 UV-B 和可见光信号之间的共同性，并强调了这些途径之间的差异。
