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dc.contributor.authorAbou-Elwafa, Salah F.
dc.contributor.authorBuettner, Bianca
dc.contributor.authorChia, Tansy
dc.contributor.authorSchulze-Buxloh, Gretel
dc.contributor.authorHohmann, Uwe
dc.contributor.authorMutasa-Gottgens, Euphemia
dc.contributor.authorJung, Christian
dc.contributor.authorMueller, Andreas E.
dc.date.accessioned2012-04-25T14:57:38Z
dc.date.available2012-04-25T14:57:38Z
dc.date.issued2011-06
dc.identifier.citationAbou-Elwafa , S F , Buettner , B , Chia , T , Schulze-Buxloh , G , Hohmann , U , Mutasa-Gottgens , E , Jung , C & Mueller , A E 2011 , ' Conservation and divergence of autonomous pathway genes in the flowering regulatory network of Beta vulgaris ' , Journal of Experimental Botany , vol. 62 , no. 10 , pp. 3359-3374 . https://doi.org/10.1093/jxb/erq321
dc.identifier.issn0022-0957
dc.identifier.otherPURE: 817595
dc.identifier.otherPURE UUID: 181142d0-d6e6-45e4-99ff-2ba6dad0c5f7
dc.identifier.otherWOS: 000292557000009
dc.identifier.otherScopus: 79960220139
dc.identifier.urihttp://hdl.handle.net/2299/8424
dc.description.abstractThe transition from vegetative growth to reproductive development is a complex process that requires an integrated response to multiple environmental cues and endogenous signals. In Arabidopsis thaliana, which has a facultative requirement for vernalization and long days, the genes of the autonomous pathway function as floral promoters by repressing the central repressor and vernalization-regulatory gene FLC. Environmental regulation by seasonal changes in daylength is under control of the photoperiod pathway and its key gene CO. The root and leaf crop species Beta vulgaris in the caryophyllid clade of core eudicots, which is only very distantly related to Arabidopsis, is an obligate long-day plant and includes forms with or without vernalization requirement. FLC and CO homologues with related functions in beet have been identified, but the presence of autonomous pathway genes which function in parallel to the vernalization and photoperiod pathways has not yet been reported. Here, this begins to be addressed by the identification and genetic mapping of full-length homologues of the RNA-regulatory gene FLK and the chromatin-regulatory genes FVE, LD, and LDL1. When overexpressed in A. thaliana, BvFLK accelerates bolting in the Col-0 background and fully complements the late-bolting phenotype of an flk mutant through repression of FLC. In contrast, complementation analysis of BvFVE1 and the presence of a putative paralogue in beet suggest evolutionary divergence of FVE homologues. It is further shown that BvFVE1, unlike FVE in Arabidopsis, is under circadian clock control. Together, the data provide first evidence for evolutionary conservation of components of the autonomous pathway in B. vulgaris, while also suggesting divergence or subfunctionalization of one gene. The results are likely to be of broader relevance because B. vulgaris expands the spectrum of evolutionarily diverse species which are subject to differential developmental and/or environmental regulation of floral transition.en
dc.format.extent16
dc.language.isoeng
dc.relation.ispartofJournal of Experimental Botany
dc.rightsOpen
dc.titleConservation and divergence of autonomous pathway genes in the flowering regulatory network of Beta vulgarisen
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.contributor.institutionAgriculture
dc.contributor.institutionGeography, Environment and Agriculture
dc.contributor.institutionCrop Protection and Climate Change
dc.contributor.institutionAgriculture, Food and Veterinary Sciences
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=79960220139&partnerID=8YFLogxK
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2011-06
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/jxb/erq321
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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