Hybrid zones in the European Alps impact the phylogeography of alpine vicariant willow species (Salix L.)

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: March 20, 2025

Introduction In the European Alps, Pleistocene climate oscillations resulted in geographical range expansions and restrictions of species. Postglacial recolonizations often result secondary contact hybridization vicariant species, thereby creating hybrid zones with patterns introgression. Here, we compare genetic structure two between willow species pairs occurring Alpine System. Supplemented by morphological ecological data, try to understand factors shaping their influence on filling patterns. Methods RAD sequencing morphometric data were used characterize biogeographical history, diversity zone each pair. Vegetation relevés distribution models provided context support. Key results Results suggest that recolonization Alps happened from peripheral glacial refugia, resulting broad Eastern both pairs. Both show introgression, but differ symmetry intensity gene flow, type introgressed loci, range. Habitat preferences do not indicate barriers recolonization. Conclusions Hybrid only affect flow also appear impact

Language: Английский

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Taxonomy, geographic distribution, habitat, and conservation status of Najas muenscheri (Hydrocharitaceae): Imperiled and restricted to Mid-Atlantic estuaries, USA1

The Journal of the Torrey Botanical Society, Journal Year: 2025, Volume and Issue: 152(2)

Published: March 10, 2025

Language: Английский

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Backbone phylogeny of Salix based on genome skimming data

Plant Diversity, Journal Year: 2024, Volume and Issue: 47(2), P. 178 - 188

Published: Sept. 13, 2024

The genus Salix is a common component of the Northern Hemisphere dendroflora with important ecological and economic value. However, taxonomy systematics extremely difficult relationships between main lineages, especially deep phylogenies, remain largely unresolved. In this study, we used genome-skimming, plastome assembly, single-copy orthologs (SCOs) from 66 accessions, along publicly available sequence read archive (SRA) datasets to obtain robust backbone phylogeny Salix, clarify its gain more precise understanding origin diversification species-rich genus. SCO resolved into two clades, plastome-based phylogenies lacking inner resolution offering fully phylogenies. Our results support classification five subgenera: Urbaniana, Triandrae, Longifoliae Vetrix. We observed significant acceleration in rate within Chamaetia-Vetrix clade, while exhibited increased rates spanning early Oligocene late Miocene. These changes coincided contemporaneous tectonic climate change events. provide foundation for future systematic evolutionary studies Salix. Additionally, showed that genome skimming data an efficient, rapid, reliable approach obtaining extensive genomic phylogenomic studies, enabling comprehensive elucidation relationships.

Language: Английский

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Characterization of the complete chloroplast genome and development of molecular markers of Salix

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 18, 2024

Salix, an economically and ecologically multifunctional tree species widely distributed in China, encompasses five ornamental sequenced this study, which are highly beneficial for plant phytoremediation due to their ability absorb heavy metals. This research utilized high-throughput sequencing acquire chloroplast genome sequences of analyzing gene composition structural characteristics, identifying potential molecular markers, laying a foundation Salix identification resource classification. Chloroplast DNA was extracted from the leaves argyracea, dasyclados, eriocephala, integra 'Hakuro Nishiki', suchowensis using optimized CTAB method. Sequencing conducted on Illumina NovaSeq PE150 platform, bioinformatics tools were employed compare features variations within genomes Salix. Analysis revealed high similarity among species, with subsequent examination 276, 269, 270, 273, 273 SSR loci, respectively, along unique simple repeat each variety. Comparison across 22 highlighted regions such as matK-trnQ, ndhC-trnV, psbE-petL, rpl36-rps8, ndhB-rps7, may serve valuable markers willow classification studies. In analysis not only enhances genetic resources but also forms critical basis development exploration interspecific phylogeny genus.

Language: Английский

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