Please use this identifier to cite or link to this item: https://doi.org/10.1111/j.1365-313X.2006.02669.x
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dc.titleFloral organ identity genes in the orchid Dendrobium crumenatum
dc.contributor.authorXu, Y.
dc.contributor.authorTeo, L.L.
dc.contributor.authorZhou, J.
dc.contributor.authorKumar, P.P.
dc.contributor.authorYu, H.
dc.date.accessioned2014-10-27T08:28:43Z
dc.date.available2014-10-27T08:28:43Z
dc.date.issued2006-04
dc.identifier.citationXu, Y., Teo, L.L., Zhou, J., Kumar, P.P., Yu, H. (2006-04). Floral organ identity genes in the orchid Dendrobium crumenatum. Plant Journal 46 (1) : 54-68. ScholarBank@NUS Repository. https://doi.org/10.1111/j.1365-313X.2006.02669.x
dc.identifier.issn09607412
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/100696
dc.description.abstractOrchids are members of Orchidaceae, one of the largest families in the flowering plants. Among the angiosperms, orchids are unique in their floral patterning, particularly in floral structures and organ identity. The ABCDE model was proposed as a general model to explain flower development in diverse plant groups, however the extent to which this model is applicable to orchids is still unknown. To investigate the regulatory mechanisms underlying orchid flower development, we isolated candidates for A, B, C, D and E function genes from Dendrobium crumenatum. These include AP2-, PI/GLO-, AP3/DEF-, AG- and SEP-like genes. The expression profiles of these genes exhibited different patterns from their Arabidopsis orthologs in floral patterning. Functional studies showed that DcOPI and DcOAG1 could replace the functions of PI and AG in Arabidopsis, respectively. By using chimeric repressor silencing technology, DcOAP3A was found to be another putative B function gene. Yeast two-hybrid analysis demonstrated that DcOAP3A/B and DcOPI could form heterodimers. These heterodimers could further interact with DcOSEP to form higher protein complexes, similar to their orthologs in eudicots. Our findings suggested that there is partial conservation in the B and C function genes between Arabidopsis and orchid. However, gene duplication might have led to the divergence in gene expression and regulation, possibly followed by functional divergence, resulting in the unique floral ontogeny in orchids. © 2006 National University of Singapore.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1111/j.1365-313X.2006.02669.x
dc.sourceScopus
dc.subjectABCDE model
dc.subjectFlower development
dc.subjectFunctional divergence
dc.subjectGene duplication
dc.subjectOrchid
dc.subjectOrgan identity
dc.typeArticle
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.description.doi10.1111/j.1365-313X.2006.02669.x
dc.description.sourcetitlePlant Journal
dc.description.volume46
dc.description.issue1
dc.description.page54-68
dc.description.codenPLJUE
dc.identifier.isiut000236035700004
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