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dc.contributor.author Kim, Hyunmin -
dc.contributor.author Kim, Yumi -
dc.contributor.author Yeom, Miji -
dc.contributor.author Lim, Junhyun -
dc.contributor.author Nam, Hong Gil -
dc.date.available 2017-05-11T01:34:33Z -
dc.date.created 2017-04-10 -
dc.date.issued 2016-04 -
dc.identifier.issn 0022-0957 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/1548 -
dc.description.abstract As most organisms age, their appearance, physiology, and behaviour alters as part of a life history strategy that maximizes their fitness over their lifetime. The passage of time is measured by organisms and is used to modulate these age-related changes. Organisms have an endogenous time measurement system called the circadian clock. This endogenous clock regulates many physiological responses throughout the life history of organisms to enhance their fitness. However, little is known about the relation between ageing and the circadian clock in plants. Here, we investigate the association of leaf ageing with circadian rhythm changes to better understand the regulation of life-history strategy in Arabidopsis. The circadian periods of clock output genes were approximately 1h shorter in older leaves than younger leaves. The periods of the core clock genes were also consistently shorter in older leaves, indicating an effect of ageing on regulation of the circadian period. Shortening of the circadian period with leaf age occurred faster in plants grown under a long photoperiod compared with a short photoperiod. We screened for a regulatory gene that links ageing and the circadian clock among multiple clock gene mutants. Only mutants for the clock oscillator TOC1 did not show a shortened circadian period during leaf ageing, suggesting that TOC1 may link age to changes in the circadian clock period. Our findings suggest that age-related information is incorporated into the regulation of the circadian period and that TOC1 is necessary for this integrative process. © 2016 The Author 2016. -
dc.publisher OXFORD UNIV PRESS -
dc.title Age-associated circadian period changes in Arabidopsis leaves -
dc.type Article -
dc.identifier.doi 10.1093/jxb/erw097 -
dc.identifier.scopusid 2-s2.0-84969962434 -
dc.identifier.bibliographicCitation Journal of Experimental Botany, v.67, no.9, pp.2665 - 2673 -
dc.subject.keywordAuthor Arabidopsis -
dc.subject.keywordAuthor circadian clock -
dc.subject.keywordAuthor day length -
dc.subject.keywordAuthor leaf age -
dc.subject.keywordAuthor plant life history -
dc.subject.keywordAuthor TOC1 -
dc.subject.keywordPlus Arabidopsis -
dc.subject.keywordPlus Circadian Clock -
dc.subject.keywordPlus CLOCK -
dc.subject.keywordPlus COMPONENTS -
dc.subject.keywordPlus Day Length -
dc.subject.keywordPlus FLOWERING TIME -
dc.subject.keywordPlus GENE-EXPRESSION -
dc.subject.keywordPlus Leaf Age -
dc.subject.keywordPlus LEAF SENESCENCE -
dc.subject.keywordPlus PHOTOPERIODIC CONTROL -
dc.subject.keywordPlus Plant -
dc.subject.keywordPlus Plant Life History -
dc.subject.keywordPlus RHYTHMS -
dc.subject.keywordPlus SYSTem -
dc.subject.keywordPlus THALIANA -
dc.subject.keywordPlus TOC1 -
dc.citation.endPage 2673 -
dc.citation.number 9 -
dc.citation.startPage 2665 -
dc.citation.title Journal of Experimental Botany -
dc.citation.volume 67 -
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Department of New Biology CBRG(Complex Biology Research Group) 1. Journal Articles

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