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Genetic diversity and geographical dispersal in grapevine clones revealed by microsatellite markers

Genome, 2006-11, Vol.49 (11), p.1459-1472 [Peer Reviewed Journal]

COPYRIGHT 2006 NRC Research Press ;ISSN: 0831-2796 ;EISSN: 1480-3321 ;DOI: 10.1139/g06-102 ;PMID: 17426761 ;CODEN: GENOE3

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  • Title:
    Genetic diversity and geographical dispersal in grapevine clones revealed by microsatellite markers
  • Author: Moncada, Ximena ; Pelsy, Frédérique ; Merdinoglu, Didier ; Hinrichsen, Patricio
  • Donini, P.
  • Subjects: Biological diversity ; Cabernet Sauvignon ; Chimera ; Chimeras (Organisms) ; chimerism ; chimérisme ; clone ; Clone Cells ; Cluster Analysis ; diversité génétique ; Genetic aspects ; genetic diversity ; Genetic Variation ; Grapes ; microsatellite ; Microsatellite Repeats ; Phylogeny ; phylogénie ; Quality Control ; Vitaceae ; Vitis - genetics ; Vitis vinifera
  • Is Part Of: Genome, 2006-11, Vol.49 (11), p.1459-1472
  • Description: Intravarietal genetic diversification associated with geographical dispersal of a vegetatively propagated species was studied using grapevine Vitis vinifera L. 'Cabernet Sauvignon' as a model. Fifty-nine clonal samples obtained from 7 countries (France, Chile, Spain, Australia, Hungary, USA, and Italy) were analyzed using 84 microsatellite markers. Eighteen polymorphic microsatellite loci (21.4%) were detected, finding 22 different genotypes in the population analyzed with a genetic similarity of over 97%. The presence of chimeric clones was evidenced at locus VMC5g7 by means of a segregation analysis of descendants by self-pollination of a triallelic Chilean clone and by somatic embryogenesis analysis, showing a mutation in L2 cell layer. Only 2 clones (obtained from France and Australia) presented the ancestral genotype, and the most divergent genotype was exhibited by another French clone, which had accumulated 5 somatic mutations. The 2 largest populations considered (from France and Chile) showed a clear divergency in the polymorphisms detected. These antecedents enabled the tracing of geographical dispersal with a phylogenetic hypothesis supporting France as the center of origin of diversification of Cabernet Sauvignon. The results obtained could help to explain diversification processes in other grapevine cultivars. The possibility that this kind of genetic variability occurs in other vegetatively propagated species is discussed, focusing on possible fingerprinting applications.
  • Publisher: Canada: NRC Research Press
  • Language: English
  • Identifier: ISSN: 0831-2796
    EISSN: 1480-3321
    DOI: 10.1139/g06-102
    PMID: 17426761
    CODEN: GENOE3
  • Source: MEDLINE
    ProQuest Central
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