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dc.contributor.authorKramer, Elena
dc.contributor.authorIrish, Vivian F.
dc.date.accessioned2009-02-22T22:44:25Z
dc.date.issued2000
dc.identifier.citationKramer, Elena M. and Vivian F. Irish. 2000. Evolution of the petal and stamen developmental programs: Evidence from comparative studies of the basal angiosperms. International Journal of Plant Science 161(S6): S29-S40.en
dc.identifier.issn1058-5893en
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:2624676
dc.description.abstractOur recently acquired understanding of the ABC program, which controls floral organ identity in model plant species such as <i>Arabidopsis thaliana</i> and <i>Antirrhinum majus</i>, has provided a new set of characters with which to evaluate floral evolution. What is still lacking, however, is a clear assessment of the actual degree of conservation of this genetic program across the angiosperms. To this end, we have begun to investigate the evolution of members of the B class gene lineages, which are known to control petal and stamen identity in the higher eudicots, and to analyze their expression patterns in selected species from the lower eudicots and basal angiosperms. The B class genes comprise the homologues of the <i>A. thaliana</i> genes <i>APETALA3</i> (<i>AP3</i>) and <i>PISTILLATA</i> (<i>PI</i>), which are closely related paralogues encoding MADS box-containing DNA-binding proteins. This study has uncovered many examples of gene duplication and divergence in both the <i>AP3</i> and <i>PI</i> lineages as well as complex and variable patterns of gene expression. These findings indicate that although some aspects of the ABC program are conserved, others display a high degree of plasticity and may not have become fixed until later in angiosperm evolution.en
dc.description.sponsorshipOrganismic and Evolutionary Biologyen
dc.language.isoen_USen
dc.publisherUniversity of Chicago Pressen
dc.relation.isversionofhttp://dx.doi.org/10.1086/317576en
dash.licenseLAA
dc.subjectMADS-box genesen
dc.subjectgene duplicationen
dc.subjectfloral evolutionen
dc.subjectPIen
dc.subjectAP3en
dc.titleEvolution of the Petal and Stamen Developmental Programs: Evidence from Comparative Studies of the Basal Angiospermsen
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalInternational Journal of Plant Scienceen
dash.depositing.authorKramer, Elena
dc.identifier.doi10.1086/317576*
dash.contributor.affiliatedKramer, Elena


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