ArticleAnnals of botany2020
Population subdivision and hybridization in a species complex of Gentiana in the Qinghai-Tibetan Plateau.
Article in Annals of botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- Divergence of alpine plant populations of three Gentianaceae species in the Qinling sky Island.BMC plant biology · 2025Article
- Cryptic diversity and rampant hybridization in annual gentians on the Qinghai-Tibet Plateau revealed by population genomic analysis.Plant diversity · 2024Article
- Hybridization and divergent climatic preferences drive divergence of two allopatric Gentiana species on the Qinghai-Tibet Plateau.Annals of botany · 2023Article
- Assessment of Genetic Diversity and Genetic Structure ofPlants (Basel, Switzerland) · 2023Article
- Independent origins of Spiranthes×kapnosperia (Orchidaceae) and their nomenclatural implications.PhytoKeys · 2023Article
- Between allopatry and secondary contact: differentiation and hybridization among three sympatric Gentiana species in the Qinghai-Tibet Plateau.BMC plant biology · 2022Article
- Phylogenomic analyses of the East Asian endemic Abelia (Caprifoliaceae) shed insights into the temporal and spatial diversification history with widespread hybridization.Annals of botany · 2022Article
- Population genomics reveal deep divergence and strong geographical structure in gentians in the Hengduan Mountains.Frontiers in plant science · 2022Article
- Isolation of microsatellite markers for the endemic Phlomis lychnitis (Lamiaceae).Molecular biology reports · 2021Article
- Evolutionary history of two rare endemic conifer species from the eastern Qinghai-Tibet Plateau.Annals of botany · 2021Article
- Spatiotemporal maintenance of flora in the Himalaya biodiversity hotspot: Current knowledge and future perspectives.Ecology and evolution · 2021Review
- Cytotype distribution and chloroplast phylogeography of the Actinidia chinensis complex.BMC plant biology · 2021Article
- Recurrent hybridization underlies the evolution of novelty inAoB PLANTS · 2021Article
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8 authors.
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Abstract
BACKGROUND AND
aimsHosting several global biodiversity hotspots, the region of the Qinghai-Tibetan Plateau (QTP) is exceptionally species-rich and harbours a remarkable level of endemism. Yet, despite a growing number of studies, factors fostering divergence, speciation and ultimately diversity remain poorly understood for QTP alpine plants. This is particularly the case for the role of hybridization. Here, we explored the evolutionary history of three closely related Gentiana endemic species, and tested whether our results supported the mountain geo-biodiversity hypothesis (MGH).
methodsWe genotyped 69 populations across the QTP with one chloroplast marker and 12 nuclear microsatellite loci. We performed phylogeographical analysis, Bayesian clustering, approximate Bayesian computation and principal components analysis to explore their genetic relationship and evolutionary history. In addition, we modelled their distribution under different climates. KEY
resultsEach species was composed of two geographically distinct clades, corresponding to the south-eastern and north-western parts of their distribution. Thus Gentiana veitchiorum and G. lawrencei var. farreri, which diverged recently, appear to have shared at least refugia in the past, from which their range expanded later on. Indeed, climatic niche modelling showed that both species went through continuous expansion from the Last Interglacial Maximum to the present day. Moreover, we have evidence of hybridization in the northwest clade of G. lawrencei var. farreri, which probably occurred in the refugium located on the plateau platform. Furthermore, phylogenetic and population genetic analyses suggested that G. dolichocalyx should be a geographically limited distinct species with low genetic differentiation from G. lawrencei var. farreri.
conclusionsClimatic fluctuations in the region of the QTP have played an important role in shaping the current genetic structure of G. lawrencei var. farreri and G. veitchiorum. We argue that a species pump effect did occur prior to the Last Interglacial Maximum, thus lending support to the MGH. However, our results do depart from expectations as suggested in the MGH for more recent distribution range and hybridization dynamics.
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