ArticleBMC evolutionary biology2015
Genetic and morphological evidence for introgression between three species of willows.
Article in BMC evolutionary biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed.
- Unraveling Evolution in the Homoploid Complex ofEcology and evolution · 2025Article
- Hybridisation as a Potential Extinction Threat to an Endangered Australian Frog.Ecology and evolution · 2025Article
- Hybrid zones in the European Alps impact the phylogeography of alpine vicariant willow species (Frontiers in plant science · 2025Article
- The Cost of Self-Defense: Browsing Effects in the Rare Plant SpeciesEcology and evolution · 2024Article
- Detection of Hybrids in Willows (Plants (Basel, Switzerland) · 2024Article
- Evolution of a hybrid zone of two willow species (Ecology and evolution · 2023Article
- Evidence for extensive hybridisation and past introgression events in feather grasses using genome-wide SNP genotyping.BMC plant biology · 2021Article
- Genetic integrity is still maintained in natural populations of the indigenous wild apple speciesEcology and evolution · 2020Article
- The global epidemiology of emergingStudies in mycology · 2020Article
- Triad hybridization via a conduit species.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- TallPeerJ · 2020Article
- Article
- Asymmetrical natural hybridization varies among hybrid swarms between two diploid Rhododendron species.Annals of botany · 2017Article
- Genetics of phenotypic plasticity and biomass traits in hybrid willows across contrasting environments and years.Annals of botany · 2017Article
- Genome sequencing and population genomic analyses provide insights into the adaptive landscape of silver birch.Nature genetics · 2017Article
- Article
- Degree of Hybridization in Seed Stands of Pinus engelmannii Carr. In the Sierra Madre Occidental, Durango, Mexico.PloS one · 2016Article
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8 authors.
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Abstract
backgroundHybridization and introgression are said to occur relatively frequently in plants, and in particular among different species of willows. However, data on the actual frequency of natural hybridization and introgression is rare. Here, we report the first fine-scale genetic analysis of a contact zone shared between the three basket willow species, Salix dasyclados, S. schwerinii and S. viminalis in the vicinity of the Lake Baikal in Southern Siberia. Individuals were sampled in fourteen populations and classified as pure species or hybrids based on a set of morphological characters. They were then genotyped at 384 nuclear SNP and four chloroplast SSR loci. The STRUCTURE and NewHybrids softwares were used to estimate the frequency and direction of hybridization using genotypic data at the nuclear SNP loci.
resultsAs many as 19 % of the genotyped individuals were classified as introgressed individuals and these were mainly encountered in the centre of the contact zone. All introgressed individuals were backcrosses to S. viminalis or S. schwerinii and no F1 or F2 hybrids were found. The rest of the genotyped individuals were classified as pure species and formed two clusters, one with S. schwerinii individuals and the other with S. viminalis and S. dasyclados individuals. The two clusters were significantly genetically differentiated, with F ST = 0.333 (0.282-0.382, p < 0.001). In contrast, for the chloroplast haplotypes, no genetic differentiation was observed as they were completely shared between the species. Based on morphological classification only 5 % of the individuals were classified as introgressed individuals, which was much less than what was detected using genotypic data.
conclusionsWe have discovered a new willow hybrid zone with relatively high frequency of introgressed individuals. The low frequency of F1 hybrids indicates that ongoing hybridization is limited, which could be because of the presence of reproductive barriers or simply because the conditions are not favorable for hybridization. We further conclude that in order to get a complete picture of the species composition of a hybrid zone it is necessary to use a combination of morphological characters and genetic data from both nuclear and chloroplast markers.
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