Abstract
UV-B radiation (280-320 nm) is a component of sunlight and a natural environmental stimulus for plants. The characterization of UVR8 (UV Resistance Locus 8) demonstrated that plants contain at least one UV-B-specific photoreceptor and signaling pathway. In plants, DNA damage caused by UV-B and the subsequent responses, historically, have often been considered general stress or non-photomorphogenic. Other UV-B-specific signaling pathways that function independently of the UVR8 photoreceptor suggest that multiple perception mechanisms exist in plants. Recently, however, plant perception of UV-B radiation and the initiation of photomorphogenic responses outside of the UVR8 pathway have been largely overlooked. Plant responses to UV-B are highly varied. Therefore, the existence of multiple perception pathways seems logical. The objective of this review is to highlight that the absorption of UV-B occurs through a variety of ways, for example through DNA, and induces photomorphogenic responses specific to that absorption that are distinct from the UVR8 signaling pathway.
Original language | English (US) |
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Pages (from-to) | 89-99 |
Number of pages | 11 |
Journal | Environmental and Experimental Botany |
Volume | 124 |
DOIs | |
State | Published - Apr 1 2016 |
Bibliographical note
Funding Information:The authors would like to thank the Minnesota Agricultural Experiment Station , the University of Minnesota Graduate School , and the Plant Biological Sciences Graduate Program for financial support.
Publisher Copyright:
© 2016 Elsevier B.V.
Keywords
- Arabidopsis
- Cell-cycle arrest
- DNA repair
- Photodimers
- Photomorphogenesis
- UV-B