Author: Marine Dubois (1)
Kimberley Tilbrook, Marine Dubois, Carlos D Crocco, Ruohe Yin, Richard Chappuis, Guillaume Allorent, Emanuel Schmid-Siegert, Michel Goldschmidt-Clermont, Roman Ulm
Plants perceive UV-B, an intrinsic component of sunlight, via a signaling pathway that is mediated by the photoreceptor UV RESISTANCE LOCUS8 (UVR8) and induces UV-B acclimation. To test whether similar UV-B perception mechanisms exist in the evolutionarily distant green alga Chlamydomonas reinhardtii, we identified Chlamydomonas orthologs of UVR8 and the key signaling factor CONSTITUTIVELY PHOTOMORPHOGENIC1 (COP1). Cr-UVR8 shares sequence and structural similarity to Arabidopsis thaliana UVR8, has conserved tryptophan residues for UV-B photoreception, monomerizes upon UV-B exposure, and interacts with Cr-COP1 in a UV-B-dependent manner.
View Full Text PDF Listings View primary source full text article PDFs.