A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica.

A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica. Research Abstract Details 

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A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica. Abstract Text:

R Papa,J Acosta,A Delgado-Salinas,P Gepts,

Lack of introgression or divergent selection may be responsible for the maintenance of phenotypic differences between sympatric populations of crops and their wild progenitors. To distinguish between these hypotheses, amplified fragment length polymorphism markers were located on a molecular linkage map of Phaseolus vulgaris relative to genes for the domestication syndrome and other traits. Diversity for these same markers was then analyzed in two samples of wild and domesticated populations from Mesoamerica. Differentiation between wild and domesticated populations was significantly higher in parapatric and allopatric populations compared to sympatric populations. It was also significantly higher near genes for domestication compared to those away from these genes. Concurrently, the differences in genetic diversity between wild and domesticated populations were strongest around such genes. These data suggest that selection in the presence of introgression appears to be a major evolutionary factor maintaining the identity of wild and domesticated populations in sympatric situations. Furthermore, alleles from domesticated populations appear to have displaced alleles in sympatric wild populations, thus leading to a reduction in genetic diversity in such populations. These results also provide a possible experimental framework for assessing the long-term risk of transgene escape and the targeting of transgenes inside the genome to minimize the survival of these transgenes into wild populations following introduction by gene flow.

A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica. Publishing Authors By Initials

R Papa,J Acosta,A Delgado-Salinas,P Gepts,

For similar genetic phenomena: variation (genetics) research abstracts see: genetic phenomena: variation (genetics) research

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A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: TAG. Theoretical and applied genetics. Theoretisch

VOLUME: 111

Page Numbers: 1147-58

Journal Abbreviation: Theor. Appl. Genet.

ISSN: 0040-5752

DAY: 11

MONTH: 10

YEAR: 2005

A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica. Information

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LANGUAGE: eng

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A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica. Keywords Mesh Terms:

KEYWORDS: Variation (Genetics)

MESH TERMS: genetics

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Substance Name: DNA Primers

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Grant and Affiliation Information for A genome-wide analysis of differentiation between wild and domesticated Phaseolus vulgaris from Mesoamerica.

AFFILIATION: Department of Plant Sciences, Section of Crop and Ecosystem Sciences, University of California, Mailstop 1, Davis, CA 95616-8780, USA.

Country: Germany

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MEDLINETA: Theor Appl Genet

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