Exploring genetic admixture in putative hybrid zones of Pinus mugo Turra and P. sylvestris L. in Slovakia

Klobučník, Miroslav, van Oosterhout, Cock, Galgóci, Martin and Kormuťák, Andrej (2025) Exploring genetic admixture in putative hybrid zones of Pinus mugo Turra and P. sylvestris L. in Slovakia. Conservation Genetics. ISSN 1566-0621

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Abstract

The Pinus mugo complex (P. mugo Turra s. l. or P. mugo aggregate) is an important fragment of European dendroflora, which is characterized by high variability, reticulate evolution, and several hybrid zone populations in different parts of Europe. Here we tried to explore the admixture structure of four putative hybrid zones between P. mugo Turra (s. str.) and P. sylvestris L. in Slovakia, using Bayesian ancestry inference with microsatellites. Unexpectedly, compared to nine reference populations, the results showed no elevated allelic diversity in our four locations. However, there was a high marker information content for ancestry based on the reference samples (δC or DK = 0.451). The individual admixture proportions of P. sylvestris averaged at 0.529, 0.419, and 0.292 in the three locations, with the distribution ranging from unimodality to bimodality. These data support the presence of hybrid zones, but only in association with peatland habitats. In a typical calcicolous pine relict examined, no hybrids were detected, which contrasts earlier reports. The unexpected absence of elevated diversity, including the differences in hybrid zones’ modality within the same habitat, might be explained by population bottlenecks due to anthropogenic peatland degradation during the 1960s to 1980s, when intensive drainage in the region occurred. The study highlights the evolutionary, ecological and conservation value of the studied bog populations.

Item Type: Article
Additional Information: Data availability: Microsatellite data generated in this study are provided within the supplementary information files (SSR_data.xlsx). Funding information: This work was supported by Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic [grant numbers 2/0022/20, 2/0005/23], and by the Operational program Integrated Infrastructure within the project: Demand-driven research for the sustainable and innovative food, Drive4SIFood 313011V336, co-financed by the European Regional Development Fund.. Open access funding provided by The Ministry of Education, Science, Research and Sport of the Slovak Republic in cooperation with Centre for Scientific and Technical Information of the Slovak Republic
Uncontrolled Keywords: admixture,hybridization,microsatellites,pinus mugo,pinus sylvestris,population structure,ecology, evolution, behavior and systematics,genetics ,/dk/atira/pure/subjectarea/asjc/1100/1105
Faculty \ School: Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Centres > Centre for Ecology, Evolution and Conservation
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Depositing User: LivePure Connector
Date Deposited: 09 Jun 2025 15:30
Last Modified: 09 Jun 2025 15:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/99413
DOI: 10.1007/s10592-025-01696-0

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