Genetic diversity and population structure in Vitis species illustrate phylogeographic patterns in eastern North America.

Autor: Péros JP; UMR AGAP Institut, CIRAD, INRAE, Institut Agro, University of Montpellier, Montpellier, France., Cousins P; E&J Gallo Winery, Modesto, CA, USA., Launay A; UMR AGAP Institut, CIRAD, INRAE, Institut Agro, University of Montpellier, Montpellier, France., Cubry P; UMR DIADE, University of Montpellier, IRD, Montpellier, France., Walker A; Department of Viticulture and Enology, University of Davis, Davis, CA, USA., Prado E; UMR SVQV, INRAE, Colmar, France., Peressotti E; UMR SVQV, INRAE, Colmar, France., Wiedemann-Merdinoglu S; UMR SVQV, INRAE, Colmar, France., Laucou V; UMR AGAP Institut, CIRAD, INRAE, Institut Agro, University of Montpellier, Montpellier, France., Merdinoglu D; UMR SVQV, INRAE, Colmar, France., This P; UMR AGAP Institut, CIRAD, INRAE, Institut Agro, University of Montpellier, Montpellier, France., Boursiquot JM; UMR AGAP Institut, CIRAD, INRAE, Institut Agro, University of Montpellier, Montpellier, France., Doligez A; UMR AGAP Institut, CIRAD, INRAE, Institut Agro, University of Montpellier, Montpellier, France.
Jazyk: angličtina
Zdroj: Molecular ecology [Mol Ecol] 2021 May; Vol. 30 (10), pp. 2333-2348. Date of Electronic Publication: 2021 Apr 03.
DOI: 10.1111/mec.15881
Abstrakt: Geographical distribution and diversity of current plant species have been strongly shaped by climatic oscillations during the Quaternary. Analysing the resulting divergence among species and differentiation within species is crucial to understand the evolution of taxa like the Vitis genus, which provides very useful genetic resources for grapevine improvement and might reveal original recolonization patterns due to growth habit and dispersal mode. Here, we studied the genetic structure in natural populations of three species from eastern North America: Vitis aestivalis, V. cinerea and V. riparia using different marker types. Vitis aestivalis and V. cinerea showed higher diversity than V. riparia. The two former species are less differentiated, confirming an earlier divergence of V. riparia. V. aestivalis and V. riparia exhibited different genetic groups on both sides of the Appalachian Mountains that could mirror different recolonization routes from southern refugia. Genetic structure was stronger in V. cinerea, for which two varieties (var. berlandieri and var. cinerea) are morphologically recognized. Our results confirm this distinction and suggest the existence of three other lineages within var. cinerea. These discontinuities appear linked to adaptation of var. berlandieri to dry and limy areas of Texas and partially to the Mississippi River Valley. Rapid range expansions from refugia upon climate warming are also suggested by the low linkage disequilibrium values observed. Furthermore, large variation for downy mildew resistance was observed in the three species. Our findings appeared consistent with the vegetation history of eastern North America.
(© 2021 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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