UV-B photoreceptor-mediated signalling in plants.
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.
Department of Botany and Plant Biology, University of Geneva, Sciences III, CH-1211 Geneva 4, Switzerland.
Marc
M
Heijde
Roman
R
Ulm
D000818:Animals; D006801:Humans; D055519:Photoreceptors, Plant / Q000737:chemistry / Q000378:metabolism*; D010944:Plants / Q000378:metabolism* / Q000528:radiation effects*; D011485:Protein Binding; D015398:Signal Transduction / Q000528:radiation effects*; D014466:Ultraviolet Rays
D055519:Photoreceptors, Plant