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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/eru339
|2 doi
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|a pubmed24n0804.xml
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|a (DE-627)NLM241204771
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|a (NLM)25147271
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Takeuchi, Tomomi
|e verfasserin
|4 aut
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|a Light and the circadian clock mediate time-specific changes in sensitivity to UV-B stress under light/dark cycles
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|c 2014
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 08.07.2015
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|a Date Revised 21.10.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a In Arabidopsis, the circadian clock regulates UV-B-mediated changes in gene expression. Here it is shown that circadian clock components are able to inhibit UV-B-induced gene expression in a gene-by-gene-specific manner and act downstream of the initial UV-B sensing by COP1 (CONSTITUTIVE PHOTOMORPHOGENIC 1) and UVR8 (UV RESISTANCE LOCUS 8). For example, the UV-B induction of ELIP1 (EARLY LIGHT INDUCIBLE PROTEIN 1) and PRR9 (PSEUDO-RESPONSE REGULATOR 9) is directly regulated by LUX (LUX ARRYTHMO), ELF4 (EARLY FLOWERING 4), and ELF3. Moreover, time-dependent changes in plant sensitivity to UV-B damage were observed. Wild-type Arabidopsis plants, but not circadian clock mutants, were more sensitive to UV-B treatment during the night periods than during the light periods under diel cycles. Experiments performed under short cycles of 6h light and 6h darkness showed that the increased stress sensitivity of plants to UV-B in the dark only occurred during the subjective night and not during the subjective day in wild-type seedlings. In contrast, the stress sensitivity of Arabidopsis mutants with a compromised circadian clock was still influenced by the light condition during the subjective day. Taken together, the results show that the clock and light modulate plant sensitivity to UV-B stress at different times of the day
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Circadian clock
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|a UV-B.
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|a gating
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|a light
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|a signalling
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|a transcription
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|a Plant Proteins
|2 NLM
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|a Newton, Linsey
|e verfasserin
|4 aut
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|a Burkhardt, Alyssa
|e verfasserin
|4 aut
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|a Mason, Saundra
|e verfasserin
|4 aut
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|a Farré, Eva M
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 65(2014), 20 vom: 15. Nov., Seite 6003-12
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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|g volume:65
|g year:2014
|g number:20
|g day:15
|g month:11
|g pages:6003-12
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|u http://dx.doi.org/10.1093/jxb/eru339
|3 Volltext
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|d 65
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