Genomic organization of molecular differentiation in Norway spruce (Picea abies)

被引:72
作者
Acheré, V
Favre, JM
Besnard, G
Jeandroz, S
机构
[1] Univ Nancy 1, Fac Sci, INRA, UMR 1136, F-54506 Vandoeuvre Les Nancy, France
[2] UNIL, Dept Ecol & Evolut, CH-1015 Lausanne, Switzerland
关键词
intraspecific differentiation; mapped markers; natural selection; outlier loci; Picea abies;
D O I
10.1111/j.1365-294X.2005.02646.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Diversity and differentiation among three populations representing the geographical domains commonly recognized within the natural distribution area of Picea abies were analysed by using a set of 292 AFLP (amplified fragment length polymorphism), SSR (single sequence repeat) and ESTP (expressed sequence tags polymorphism) markers. As usually observed in forest trees, results showed high within-population diversity (H-S reaching 0.79) and low among-population differentiation (G(ST) approximate to 2%). The genomic organization of differentiation was then investigated on the basis of a subsample of 150 AFLP, SSR and ESTP mapped markers. The number of the loci differentiating the Baltico-Nordic from the central European populations (25 loci) and, within the central European populations, the Alpine from the Hercyno-Carpathian populations (12 loci), were different. These 37 differentiated loci, with individual G(ST) values ranging from 0.008 to 0.20, were evenly distributed on all linkage groups and mostly followed the neutral expectations, suggesting genome-wide effects on differentiation. Nine of them however behave as 'outlier' loci indicating possible locus-specific selective effects. Contribution of ongoing evolutionary forces and historical effects to the geographical differentiation of the species are discussed.
引用
收藏
页码:3191 / 3201
页数:11
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