Université de Fribourg

Causes and consequences of large clonal assemblies in a poplar hybrid zone

Macaya-Sanz, David ; Heuertz, Myriam ; Lindtke, Dorothea ; Vendramin, Giovanni G. ; Lexer, Christian ; González-Martínez, andSantiago C.

In: Molecular Ecology, 2016, vol. 25, no. 21, p. 5330–5344

Asexual reproduction is a common and fundamental mode of reproduction in plants. Although persistence in adverse conditions underlies most known cases of clonal dominance, proximal genetic drivers remain unclear, in particular for populations dominated by a few large clones. In this study, we studied a clonal population of the riparian tree Populus alba in the Douro river basin (northwestern...

Université de Fribourg

Admixture mapping of quantitative traits in Populus hybrid zones: power and limitations

Lindtke, Dorothea ; González-Martínez, S. C. ; Macaya-Sanz, David ; Lexer, Christian

In: Heredity, 2013, p. -

Uncovering the genetic architecture of species differences is of central importance for understanding the origin and maintenance of biological diversity. Admixture mapping can be used to identify the number and effect sizes of genes that contribute to the divergence of ecologically important traits, even in taxa that are not amenable to laboratory crosses because of their long generation time or...

Université de Fribourg

Genetic analysis of post-mating reproductive barriers in hybridizing European Populus species

Macaya-Sanz, David ; Suter, Leonie ; Joseph, Jeffrey A. ; Barbará, Thelma ; Alba, N. ; González-Martínez, S. C. ; Widmer, Alex ; Lexer, Christian

In: Heredity, 2011, vol. 107, p. 478–486

Molecular genetic analyses of experimental crosses provide important information on the strength and nature of post-mating barriers to gene exchange between divergent populations, which are topics of great interest to evolutionary geneticists and breeders. Although not a trivial task in long-lived organisms such as trees, experimental interspecific recombinants can sometimes be created through...