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Université de Fribourg

Rapid genomic and phenotypic change in response to climate warming in a widespread plant invader

Sun, Yan ; Bossdorf, Oliver ; Grados, Ramon D. ; Liao, Zhi, Yong ; Müller‐Schärer, Heinz

In: Global Change Biology, 2020//n/a/-

Predicting plant distributions under climate change is constrained by our limited understanding of potential rapid adaptive evolution. In an experimental evolution study with the invasive common ragweed (Ambrosia artemisiifolia L.) we subjected replicated populations of the same initial genetic composition to simulated climate warming. Pooled DNA sequencing of parental and offspring...

Université de Fribourg

Admixture mapping in interspecific Populus hybrids identifies classes of genomic architectures for phytochemical, morphological and growth traits

Bresadola, Luisa ; Caseys, Céline ; Castiglione, Stefano ; Buerkle, C. Alex ; Wegmann, Daniel ; Lexer, Christian

In: New Phytologist, 2019, vol. 223, no. 4, p. 2076–2089

The genomic architecture of functionally important traits is key to understanding the maintenance of reproductive barriers and trait differences when divergent populations or species hybridize. We conducted a genome-wide association study (GWAS) to study trait architecture in natural hybrids of two ecologically divergent Populus species. We genotyped 472 seedlings from a natural hybrid zone...