Format

Send to

Choose Destination
BMC Biol. 2015 Jun 30;13:45. doi: 10.1186/s12915-015-0156-y.

Q&A: How do plants sense and respond to UV-B radiation?

Author information

1
Department of Botany and Plant Biology, University of Geneva, Sciences III, CH-1211, Geneva, 4, Switzerland. roman.ulm@unige.ch.
2
Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK.

Abstract

Plants are able to sense UV-B through the UV-B photoreceptor UVR8. UV-B photon absorption by a UVR8 homodimer leads to UVR8 monomerization and interaction with the downstream signaling factor COP1. This then initiates changes in gene expression, which lead to several metabolic and morphological alterations. A major response is the activation of mechanisms associated with UV-B acclimation and UV-B tolerance, including biosynthesis of sunscreen metabolites, antioxidants and DNA repair enzymes. To balance the response, UVR8 is inactivated by regulated re-dimerization. Apart from their importance for plants, UVR8 and its interacting protein COP1 have already proved useful for the optogenetic toolkit used to engineer synthetic light-dependent responses.

PMID:
26123292
PMCID:
PMC4484705
DOI:
10.1186/s12915-015-0156-y
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for BioMed Central Icon for PubMed Central
Loading ...
Support Center