Plant Physiol. Journal of Pharmacology and Experimental Therapeutics
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Published on November 7, 2008; 10.1104/pp.108.131052

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Received October 10, 2008
Accepted November 5, 2008

Genome-Wide Analysis of MIKCC-Type MADS-Box Genes in Grapevine

Jose Diaz-Riquelme , Diego Lijavetzky , Jose M. Martinez-Zapater , and Maria Jose Carmona *

Departamento de Genetica Molecular de Plantas, Centro Nacional de Biotecnologia, Consejo Superior de Investigaciones Cientificas (CSIC), Cantoblanco, 28049 Madrid, Spain; Departamento de Biotecnologia, Escuela Tecnica Superior Ingenieros Agronomos, Universidad Politecnica de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain

* Corresponding author; email: mariajose.carmona{at}upm.es.

MIKCC-type MADS-box genes encode transcription factors that play crucial roles in plant growth and development. Analysis of the grapevine genome revealed up to 38 MIKCC-type genes. We report here a complete analysis of this gene family regarding their phylogenetic relationships with homologous genes identified in other sequenced dicot genomes, their genome location, and gene structure and expression. The grapevine genes cluster in 13 subfamilies with their Arabidopsis thaliana and Populus trichocarpa counterparts. The lack of recent whole genome duplications in grapevine allows assigning the gene diversification processes observed within each subfamily to either an ancestral poliploidization event predating divergence of those three species or to later duplication events within each lineage. Expression profiles of MIKCC-type genes in vegetative and reproductive organs as well as during flower and tendril development show conserved expression domains for specific subfamilies but also reflect characteristic features of grapevine development. Expression analyses in latent buds and during flower development reveal common features previously described in other plant systems as well as possible new roles for members of some subfamilies during flowering transition. The analysis of MIKCC-type genes in grapevine helps understanding the origin of gene diversification within each subfamily and provides the basis for functional analyses to uncover the role of these MADS-box genes in grapevine development.




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[Abstract] [Full Text] [PDF]


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