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The UVB photoreceptor UVR8 mediates accumulation of UV-absorbing pigments, but not changes in plant morphology, under outdoor conditions
- Source :
- Plant, Cell & Environment. 40:2250-2260
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- UVB radiation is biologically active; in plants, it can induce a range of molecular, biochemical, morphological and developmental responses. Although much progress has been made in elucidating UVB perception and signalling pathways under controlled laboratory conditions, understanding of the adaptive, ecological role of UVB responses is still very limited. In this study, we looked at the functional role of UVR8 under outdoor light conditions, by studying growth, photosynthetic competence and accumulation of UV absorbing pigments in a mutant lacking functional UVR8 protein. It was found that the influence of UVB on morphology is restricted to summer and is independent of UVR8. In contrast, UVB had an effect on the content of UV-absorbing pigments and the maximal efficiency of photosystem II of photosynthesis in the uvr8-1 mutant throughout the year. It is concluded that the UVR8 photoreceptor plays a role throughout the year, in the temperate climate zone, even when UVB levels are relatively low.
- Subjects :
- 0106 biological sciences
0301 basic medicine
UVR8
integumentary system
Photosystem II
Physiology
Mutant
Plant Science
Biology
Photosynthesis
biology.organism_classification
01 natural sciences
Cell biology
03 medical and health sciences
Pigment
030104 developmental biology
13. Climate action
Plant morphology
Arabidopsis
visual_art
Botany
visual_art.visual_art_medium
skin and connective tissue diseases
Signalling pathways
010606 plant biology & botany
Subjects
Details
- ISSN :
- 01407791
- Volume :
- 40
- Database :
- OpenAIRE
- Journal :
- Plant, Cell & Environment
- Accession number :
- edsair.doi...........ed9cbb45cb36d8dec0ae0f5d711ccb7e