Q&A: How do plants sense and respond to UV-B radiation?
Q&A: How do plants sense and respond to UV-B radiation?
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DOI:
10.1186/s12915-015-0156-y
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发表时间:
2015-06-30
期刊:
影响因子:
5.4
通讯作者:
Jenkins GI
中科院分区:
文献类型:
--
作者:
Ulm R;Jenkins GI
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.
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DOI:
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期刊:
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