Phylogeography of the Euro-Siberian steppe plant Astragalus austriacus: Late Pleistocene climate fluctuations fuelled formation and expansion of two main lineages from a Pontic-Pannonian area of origin

Maylandt, Clemens; Seidl, Anna; Kirschner, Philipp; Pfanzelt, Simon; Király, Gergely; Neuffer, Barbara; Blattner, Frank R.; Hurka, Herbert; Friesen, Nikolai; Poluyanov, Alexander V.; Kosachev, Petr A.; Schmiderer, Corinna; Bernhardt, Karl-Georg; Tremetsberger, Karin

doi:10.1016/j.ppees.2024.125800

Perspectives in Plant Ecology, Evolution and Systematics

2024

DOI: 10.1016/j.ppees.2024.125800

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Phylogeography of the Euro-Siberian steppe plant Astragalus austriacus: Late Pleistocene climate fluctuations fuelled formation and expansion of two main lineages from a Pontic-Pannonian area of origin

Clemens Maylandt,

Anna Seidl,

Philipp Kirschner

et al.

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Cited by 1 publication

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Building a robust backbone forAstragalus(Fabaceae) using a clade-specific target enrichment bait set

Buono,

Kadereit,

Liston

et al. 2024

Preprint

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With over 3100 species, Astragalus (Fabaceae) has long fascinated botanists as the largest genus of flowering plants. With an origin in the Middle Miocene, Astragalus has one of the highest diversification rates known in flowering plants. Comprehensive taxonomic treatments exist, and the genus is currently subdivided into 136 sections in the Old World and 93 sections in the New World based on morphological characters. Despite considerable efforts, a comprehensive and well-resolved phylogeny of the genus is still lacking. Here, we reconstruct the backbone phylogeny of Astragalus using a custom bait set capturing 819 loci specifically designed for a target enrichment approach in the Astragalean clade. We carefully selected a set of 107 taxa representing all major clades currently recognized in Astragalus. Of those, 80 newly sequenced taxa were obtained from herbarium specimens as old as 110 years. We retrieved all the targeted loci and additional off-target plastome sequences for all samples, including the 80 herbarium specimens. Our phylogenetic analysis reinforced the currently accepted backbone phylogeny of Astragalus with high support and unprecedented details, additionally providing insights into cytonuclear phylogenetic conflicts in the genus. Evidence for potential reticulate evolution was found, providing a possible explanation for the conflicts observed. Conclusions: This work represents an important milestone in obtaining a comprehensive, herbarium-based phylogeny of Astragalus, which will constitute the base to study a wealth of relevant biological questions, for example, the still unanswered question of what drove the rapid diversification of Astragalus, with important repercussions on our understanding of diversification in natural contexts.

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Building a robust backbone forAstragalus(Fabaceae) using a clade-specific target enrichment bait set

Buono,

Kadereit,

Liston

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

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Phylogeography of the Euro-Siberian steppe plant Astragalus austriacus: Late Pleistocene climate fluctuations fuelled formation and expansion of two main lineages from a Pontic-Pannonian area of origin

Cited by 1 publication

References 88 publications

Building a robust backbone forAstragalus(Fabaceae) using a clade-specific target enrichment bait set

Building a robust backbone forAstragalus(Fabaceae) using a clade-specific target enrichment bait set

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