July 30, 2020

A study on genetic structure of relict, narrow-endemic Papaver occidentale has just been published in Alpine Botany.

The paper is a result of a collaborative study led by Gregor Kozlowski and Christian Parisod, our Swiss colleagues from Fribourg and Berne Universities, and co-authored by Michał Ronikier from our Group. Using genome-wide ddRAD sequencing and genotyping all known populations and selected closely related taxa, we studied the last glacial history of Papaver occidentale - a narrowly distributed taxon from P. alpinum group, occurring on north-exposed calcareous screes of the Western Prealps. Genetic data suggest a complex history of this taxon which may have involved both postglacial recolonisation from lower-elevation, external refugia, and likely in situ survival of local populations throughout the last glacial period. Our study contributes to relatively rare phylogeographical studies of narrow-endemic, relict taxa of the European mountains.


Pittet L, Fragnière Y, Grünig S, Bétrisey S, Clément B, Gerber E, Ronikier M, Kozlowski G, Parisod C, 2020. Genetic structure of the endemic Papaver occidentale indicates survival and immigration in the Western Prealps. Alpine Botany 130: 129–140. DOI