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Title
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Hormone-controlled UV-B responses in plants
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Author
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Abstract
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| Ultraviolet B (UV-B) light is a portion of solar radiation that has significant effects on the development and metabolism of plants. Effects of UV-B on plants can be classified into photomorphogenic effects and stress effects. These effects largely rely on the control of, and interactions with, hormonal pathways. The fairly recent discovery of the UV-B-specific photoreceptor UV RESISTANCE LOCUS 8 (UVR8) allowed evaluation of the role of downstream hormones, leading to the identification of connections with auxin and gibberellin. Moreover, a substantial overlap between UVR8 and phytochrome responses has been shown, suggesting that part of the responses caused by UVR8 are under PHYTOCHROME INTERACTING FACTOR control. UV-B effects can also be independent of UVR8, and affect different hormonal pathways. UV-B affects hormonal pathways in various ways: photochemically, affecting biosynthesis, transport, and/or signaling. This review concludes that the effects of UV-B on hormonal regulation can be roughly divided in two: inhibition of growth-promoting hormones; and the enhancement of environmental stress-induced defense hormones. |
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Language
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English
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Source (journal)
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Journal of experimental botany. - Oxford
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Publication
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Oxford
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Oxford univ press
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2016
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ISSN
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0022-0957
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DOI
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10.1093/JXB/ERW261
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Volume/pages
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67
:15
(2016)
, p. 4469-4482
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ISI
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000383233400005
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Pubmed ID
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27401912
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Full text (Publisher's DOI)
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Full text (open access)
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