Signal transduction in responses to UV-B radiation

Jenkins, G.I. (2009) Signal transduction in responses to UV-B radiation. Annual Review of Plant Biology, 60(1), pp. 407-431. (doi: 10.1146/annurev.arplant.59.032607.092953)

Abstract

UV-B radiation is a key environmental signal that initiates diverse responses in plants that affect metabolism, development, and viability. Many effects of UV-B involve the differential regulation of gene expression. The response to UV-B depends on the nature of the UV-B treatment, the extent of adaptation and acclimation to UV-B, and interaction with other environmental factors. Responses to UV-B are mediated by both nonspecific signaling pathways, involving DNA damage, reactive oxygen species, and wound/defense signaling molecules, and UV-B-specific pathways that mediate photomorphogenic responses to low levels of UV-B. Importantly, photomorphogenic signaling stimulates the expression of genes involved in UV-protection and hence promotes plant survival in UV-B. Photomorphogenic UV-B signaling is mediated by the UV-B-specific component UV RESISTANCE LOCUS8 (UVR8). Both UVR8 and CONSTITUTIVE PHOTOMORPHOGENESIS1 (COP1) are required for UV-B-induced expression of the ELONGATED HYPOCOTYL5 (HY5) transcription factor, which plays a central role in the regulation of genes involved in photomorphogenic UV-B responses

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Jenkins, Professor Gareth
• Authors: Jenkins, G.I.
• Subjects: Q Science > QK Botany
• College/School: College of Medical Veterinary and Life Sciences > School of Molecular Biosciences
• Journal Name: Annual Review of Plant Biology
• ISSN: 1543-5008