Jaramillo-CorreaBeaulieuBousquet2004

Référence

Jaramillo-Correa, J.P., Beaulieu, J., Bousquet, J. (2004) Variation in mitochondrial DNA reveals multiple distant glacial refugia in black spruce (Picea mariana), a transcontinental North American conifer. Molecular Ecology, 13(9):2735-2747.

Résumé

Range-wide genetic variation of black spruce (Picea mariana) was studied using polymerase chain reaction-random fragment length polymorphism markers of the mitochondrial genome. Four polymorphic mitochondrial DNA (mtDNA) loci were surveyed and two or three alleles were detected at each locus, resulting in 10 multilocus mtDNA types or mitotypes. A significant subdivision of population genetic diversity was detected (G(ST) = 0.671; N-ST = 0.726), suggesting low levels of gene flow among populations. The distribution of mitotypes was not random (N-ST > G(ST); P < 0.05) and revealed four partially overlapping zones, presumably representative of different glacial populations. Comparison of the genetic structure derived from mtDNA markers and the colonization paths previously deduced from the fossil and pollen records allow us to infer at least three southern and one northeastern glacial populations for black spruce. The patterns revealed in this study suggest that black spruce shares its biogeographical history with other forest-associated North American species.

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@ARTICLE { Jaramillo-CorreaBeaulieuBousquet2004,
    AUTHOR = { Jaramillo-Correa, J.P. and Beaulieu, J. and Bousquet, J. },
    TITLE = { Variation in mitochondrial DNA reveals multiple distant glacial refugia in black spruce (Picea mariana), a transcontinental North American conifer },
    JOURNAL = { Molecular Ecology },
    YEAR = { 2004 },
    VOLUME = { 13 },
    PAGES = { 2735-2747 },
    NUMBER = { 9 },
    NOTE = { Times Cited: 10 Article English Cited References Count: 62 846ca },
    ABSTRACT = { Range-wide genetic variation of black spruce (Picea mariana) was studied using polymerase chain reaction-random fragment length polymorphism markers of the mitochondrial genome. Four polymorphic mitochondrial DNA (mtDNA) loci were surveyed and two or three alleles were detected at each locus, resulting in 10 multilocus mtDNA types or mitotypes. A significant subdivision of population genetic diversity was detected (G(ST) = 0.671; N-ST = 0.726), suggesting low levels of gene flow among populations. The distribution of mitotypes was not random (N-ST > G(ST); P < 0.05) and revealed four partially overlapping zones, presumably representative of different glacial populations. Comparison of the genetic structure derived from mtDNA markers and the colonization paths previously deduced from the fossil and pollen records allow us to infer at least three southern and one northeastern glacial populations for black spruce. The patterns revealed in this study suggest that black spruce shares its biogeographical history with other forest-associated North American species. },
    KEYWORDS = { black spruce glacial populations glacial refugia mitochondrial DNA phylogeography postglacial recolonization site sts markers c-14 yr bp norway spruce population differentiation postglacial recolonization chloroplast DNA genetic differentiation pinus-banksiana diversity pollen },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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