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dc.contributor.authorHaydon, Michael Jen
dc.contributor.authorMielczarek, Olgaen
dc.contributor.authorFrank, Alexanderen
dc.contributor.authorRomán, Ángelaen
dc.contributor.authorWebb, Alexen
dc.date.accessioned2017-12-05T18:29:56Z
dc.date.available2017-12-05T18:29:56Z
dc.date.issued2017-10en
dc.identifier.issn0032-0889
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/269967
dc.description.abstractCircadian clocks drive rhythmic physiology and metabolism to optimize plant growth and performance under daily environmental fluctuations caused by the rotation of the planet. Photosynthesis is a key metabolic process that must be appropriately timed to the light-dark cycle. The circadian clock contributes to the regulation of photosynthesis and in turn the daily accumulation of sugars from photosynthesis also feeds back to regulate the circadian oscillator. We have previously shown that GIGANTEA (GI) is required to sustain sucrose-dependent circadian rhythms in darkness. The mechanism by which sucrose affects the circadian oscillator in a GI-dependent manner was unknown. Here, we identify that sucrose sustains rhythms in the dark by stabilizing GI protein, dependent on the F-Box protein ZEITLUPE (ZTL), and implicate CONSTITUTIVE TRIPLE RESPONSE 1 (CTR1), a negative regulator of ethylene signaling. Our identification of a role for CTR1 in the response to sucrose prompted a reinvestigation of the effects of ethylene on the circadian oscillator. We demonstrate that ethylene shortens circadian period, conditional on the effects of sucrose and requiring GI. These findings reveal that sucrose affects the stability of circadian oscillator proteins and can mask the effects of ethylene on the circadian system identifying novel molecular pathways for input of sugar to the Arabidopsis circadian network.
dc.description.sponsorshipThis research was supported by the BBSRC (BB/H006826/1 and BB/L021188/1)
dc.format.mediumPrint-Electronicen
dc.languageengen
dc.publisherAmerican Society of Plant Biologists
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectArabidopsisen
dc.subjectEthylenesen
dc.subjectProtein Kinasesen
dc.subjectSucroseen
dc.subjectPlant Growth Regulatorsen
dc.subjectArabidopsis Proteinsen
dc.subjectSignal Transductionen
dc.subjectPhotosynthesisen
dc.subjectLighten
dc.subjectDarknessen
dc.subjectCircadian Clocksen
dc.titleSucrose and Ethylene Signaling Interact to Modulate the Circadian Clock.en
dc.typeArticle
prism.endingPage958
prism.issueIdentifier2en
prism.publicationDate2017en
prism.publicationNamePlant physiologyen
prism.startingPage947
prism.volume175en
dc.identifier.doi10.17863/CAM.16818
dcterms.dateAccepted2017-08-01en
rioxxterms.versionofrecord10.1104/pp.17.00592en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-10en
dc.contributor.orcidHaydon, Michael J [0000-0003-2486-9387]
dc.contributor.orcidMielczarek, Olga [0000-0001-9806-2186]
dc.contributor.orcidRomán, Ángela [0000-0003-3457-999X]
dc.contributor.orcidWebb, Alexander [0000-0003-0261-4375]
dc.identifier.eissn1532-2548
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idBBSRC (BB/H006826/1)


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International