Jaramillo-CorreaBeaulieuBousquet2001

Référence

Jaramillo-Correa, J.P., Beaulieu, J., Bousquet, J. (2001) Contrasting evolutionary forces driving population structure at expressed sequence tag polymorphisms, allozymes and quantitative traits in white spruce. Molecular Ecology, 10(11):2729-2740.

Résumé

Patterns of variation in quantitative characters and genetic markers were compared among six regional populations of white, Spruce [Picea glauca (Moench) Voss]. Although some phenotypic characters were correlated with latitude (r=0.791), longitude (r=-0.796) and precipitation during the growing season (r=0.789), variability at genetic markers was not correlated with geographical or bioclimatic variables, and followed neutral expectations. Estimates of genetic diversity and population differentiation for 14 allozymes (translated regions of coding genes) were essentially indistinguishable from those observed for 11 expressed sequence tag polymorphisms (ESTPs) from untranslated regions of coding genes. Variation among populations for quantitative traits such as eighth year height (Q(ST) = 0.082), thirteenth year height (Q(ST) = 0.069), total wood density (Q(ST) = 0.102) and date of budset (Q(ST) = 0.246), was greater than for allozymes (G(ST) = 0.014) and ESTPs (G(ST) = 0.019). These trends suggest a strong adaptive response in quantitative traits, contrasting to allozymes and ESTPs where no selective response could be detected and where populations appeared to be essentially in a migration-drift equilibrium.

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@ARTICLE { Jaramillo-CorreaBeaulieuBousquet2001,
    AUTHOR = { Jaramillo-Correa, J.P. and Beaulieu, J. and Bousquet, J. },
    TITLE = { Contrasting evolutionary forces driving population structure at expressed sequence tag polymorphisms, allozymes and quantitative traits in white spruce },
    JOURNAL = { Molecular Ecology },
    YEAR = { 2001 },
    VOLUME = { 10 },
    PAGES = { 2729-2740 },
    NUMBER = { 11 },
    NOTE = { Times Cited: 21 Article English Cited References Count: 60 497yt },
    ABSTRACT = { Patterns of variation in quantitative characters and genetic markers were compared among six regional populations of white, Spruce [Picea glauca (Moench) Voss]. Although some phenotypic characters were correlated with latitude (r=0.791), longitude (r=-0.796) and precipitation during the growing season (r=0.789), variability at genetic markers was not correlated with geographical or bioclimatic variables, and followed neutral expectations. Estimates of genetic diversity and population differentiation for 14 allozymes (translated regions of coding genes) were essentially indistinguishable from those observed for 11 expressed sequence tag polymorphisms (ESTPs) from untranslated regions of coding genes. Variation among populations for quantitative traits such as eighth year height (Q(ST) = 0.082), thirteenth year height (Q(ST) = 0.069), total wood density (Q(ST) = 0.102) and date of budset (Q(ST) = 0.246), was greater than for allozymes (G(ST) = 0.014) and ESTPs (G(ST) = 0.019). These trends suggest a strong adaptive response in quantitative traits, contrasting to allozymes and ESTPs where no selective response could be detected and where populations appeared to be essentially in a migration-drift equilibrium. },
    KEYWORDS = { adaptation allozymes estps g(st) neutrality population structure q(st) quantitative traits site sts markers genetic-variation f-statistics black spruce drosophila-melanogaster pinus-sylvestris arbitrary genes picea-glauca selection loci },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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