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dc.contributor.authorBallerini, Evangeline Sierra
dc.contributor.authorKramer, Elena M.
dc.date.accessioned2011-05-31T19:40:40Z
dc.date.issued2011
dc.identifier.citationBallerini, Evangeline S., and Elena M. Kramer. 2011. Environmental and molecular analysis of the floral transition in the lower eudicot Aquilegia formosa. EvoDevo 2(4).en_US
dc.identifier.issn2041-9139en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4903810
dc.description.abstractBackground Flowering is a critical transition in plant development, the timing of which can have considerable fitness consequences. Until recently, research into the genetic control of flowering time and its associated developmental changes was focused on core eudicots (for example, Arabidopsis) or monocots (for example, Oryza). Here we examine the flowering response of Aquilegia formosa, a member of the eudicot order Ranunculales that is emerging as an important model for the investigation of plant ecology and evolution. Results We have determined that A. formosa has a strong vernalization requirement but little or no photoperiod response, making it a day neutral (DN) plant. Consistent with this, the Aquilegia homolog of FLOWERING LOCUS T (AqFT) is expressed in both long and short days but surprisingly, the locus is expressed before the transition to flowering. In situ hybridizations with homologs of several Arabidopsis Floral Pathway Integrators (FPIs) do not suggest conserved functions relative to Arabidopsis, the potential exceptions being AqLFY and AqAGL24.2. Conclusions In Aquilegia, vernalization is critical to flowering but this signal is not strictly required for the transcriptional activation of AqFT. The expression patterns of AqLFY and AqAGL24.2 suggest a hypothesis for the development of Aquilegia's determinate inflorescence whereby their differential expression controls the progression of each meristem from inflorescence to floral identity. Interestingly, none of the Aquilegia expression patterns are consistent with a function in floral repression which, combined with the lack of a FLC homolog, means that new candidate genes must be identified for the control of vernalization response in Aquilegia.en_US
dc.description.sponsorshipOrganismic and Evolutionary Biologyen_US
dc.language.isoen_USen_US
dc.publisherBioMed Centralen_US
dc.relation.isversionofdoi:10.1186/2041-9139-2-4en_US
dash.licenseOAP
dc.titleEnvironmental and Molecular Analysis of the Floral Transition in the Lower Eudicot Aquilegia Formosaen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalEvoDevoen_US
dash.depositing.authorKramer, Elena M.
dc.date.available2011-05-31T19:40:40Z
dc.identifier.doi10.1186/2041-9139-2-4*
dash.contributor.affiliatedBallerini, Evangeline Sierra
dash.contributor.affiliatedKramer, Elena


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