The grapevine genome sequence suggests ancestral hexaploidization in major angiosperm phyla. - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Nature Année : 2007

The grapevine genome sequence suggests ancestral hexaploidization in major angiosperm phyla.

Olivier Jaillon
Christian Clepet
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  • IdHAL : clepet
Nicola Vitulo
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Alessandro Vezzi
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Philippe Hugueney
Julie Poulain
Michaël Alaux
Vincent Dumas
Giorgio Malacrida
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Eléonore Durand
Philippe Chatelet
Didier Merdinoglu
François Artiguenave
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Jean Weissenbach
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Patrick Wincker

Résumé

The analysis of the first plant genomes provided unexpected evidence for genome duplication events in species that had previously been considered as true diploids on the basis of their genetics. These polyploidization events may have had important consequences in plant evolution, in particular for species radiation and adaptation and for the modulation of functional capacities. Here we report a high-quality draft of the genome sequence of grapevine (Vitis vinifera) obtained from a highly homozygous genotype. The draft sequence of the grapevine genome is the fourth one produced so far for flowering plants, the second for a woody species and the first for a fruit crop (cultivated for both fruit and beverage). Grapevine was selected because of its important place in the cultural heritage of humanity beginning during the Neolithic period. Several large expansions of gene families with roles in aromatic features are observed. The grapevine genome has not undergone recent genome duplication, thus enabling the discovery of ancestral traits and features of the genetic organization of flowering plants. This analysis reveals the contribution of three ancestral genomes to the grapevine haploid content. This ancestral arrangement is common to many dicotyledonous plants but is absent from the genome of rice, which is a monocotyledon. Furthermore, we explain the chronology of previously described whole-genome duplication events in the evolution of flowering plants.
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inria-00180136 , version 1 (31-05-2020)

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Olivier Jaillon, Jean-Marc Aury, Benjamin Noel, Alberto Policriti, Christian Clepet, et al.. The grapevine genome sequence suggests ancestral hexaploidization in major angiosperm phyla.. Nature, 2007, 449 (7161), pp.463-7. ⟨10.1038/nature06148⟩. ⟨inria-00180136⟩
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