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Apr
2016

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.
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http://www.plantcell.org/content/plantcell/early/2016/03/28/
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http://www.plantcell.org/content/plantcell/28/4/966.full.pdf
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http://www.plantcell.org/lookup/doi/10.1105/tpc.15.00287
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4863380PMCFound


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