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dc.contributor.authorChia, T. Y. P.
dc.contributor.authorMuller, A.
dc.contributor.authorJung, C.
dc.contributor.authorMutasa-Gottgens, Euphemia
dc.date.accessioned2012-04-25T14:57:36Z
dc.date.available2012-04-25T14:57:36Z
dc.date.issued2008
dc.identifier.citationChia , T Y P , Muller , A , Jung , C & Mutasa-Gottgens , E 2008 , ' Sugar beet contains a large CONSTANS-LIKE gene family including a CO homologue that is independent of the early-bolting (B) gene locus ' , Journal of Experimental Botany , vol. 59 , no. 10 , pp. 2735-2748 . https://doi.org/10.1093/jxb/ern129
dc.identifier.issn0022-0957
dc.identifier.otherPURE: 817525
dc.identifier.otherPURE UUID: 9f0178e0-0d28-41f5-92bb-7e28768dc338
dc.identifier.otherScopus: 46849083934
dc.identifier.urihttp://hdl.handle.net/2299/8423
dc.description.abstractFloral transition in the obligate long-day (LD) plant sugar beet (Beta vulgaris ssp. vulgaris) is tightly linked to the B gene, a dominant early-bolting quantitative trait locus, the expression of which is positively regulated by LD photoperiod. Thus, photoperiod regulators like CONSTANS (CO) and CONSTANS-LIKE (COL) genes identified in many LD and short-day (SD)-responsive plants have long been considered constituents and/or candidates for the B gene. Until now, the photoperiod response pathway of sugar beet (a Caryophyllid), diverged from the Rosids and Asterids has not been identified. Here, evidence supporting the existence of a COL gene family is provided and the presence of Group I, II, and III COL genes in sugar beet, as characterized by different zinc-finger (B-box) and CCT (CO, CO-like, TOC) domains is demonstrated. BvCOL1 is identified as a close-homologue of Group 1a (AtCO, AtCOL1, AtCOL2) COL genes, hence a good candidate for flowering time control and it is shown that it maps to chromosome II but distant from the B gene locus. The late-flowering phenotype of A. thaliana co-2 mutants was rescued by over-expression of BvCOL1 thereby suggesting functional equivalence with AtCO, and it is shown that BvCOL1 interacts appropriately with the endogenous downstream genes, AtFT and AtSOC1 in the transgenic plants. Curiously, BvCOL1 has a dawn-phased diurnal pattern of transcription, mimicking that of AtCOL1 and AtCOL2 while contrasting with AtCO. Taken together, these data suggest that BvCOL1 plays an important role in the photoperiod response of sugar beet.en
dc.language.isoeng
dc.relation.ispartofJournal of Experimental Botany
dc.rightsOpen
dc.titleSugar beet contains a large CONSTANS-LIKE gene family including a CO homologue that is independent of the early-bolting (B) gene locusen
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.description.statusPeer reviewed
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2008
rioxxterms.versionVoR
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/jxb/ern129
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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