Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats

Abstract Genetic divergence by environment is a process whereby selection causes the formation of gene flow barriers between populations adapting to contrasting environments and is often considered to be the onset of speciation. Nevertheless, the extent to which genetic differentiation by environmen...

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Autores principales:	Pablo Deschepper, Rein Brys, Miguel A. Fortuna, Hans Jacquemyn
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3634fc08b4a1458e869bf11a6662587a
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spelling	oai:doaj.org-article:3634fc08b4a1458e869bf11a6662587a2021-12-02T12:32:26ZAnalysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats10.1038/s41598-017-09154-92045-2322https://doaj.org/article/3634fc08b4a1458e869bf11a6662587a2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09154-9https://doaj.org/toc/2045-2322Abstract Genetic divergence by environment is a process whereby selection causes the formation of gene flow barriers between populations adapting to contrasting environments and is often considered to be the onset of speciation. Nevertheless, the extent to which genetic differentiation by environment on small spatial scales can be detected by means of neutral markers is still subject to debate. Previous research on the perennial herb Primula veris has shown that plants from grassland and forest habitats showed pronounced differences in phenology and flower morphology, suggesting limited gene flow between habitats. To test this hypothesis, we sampled 33 populations of P. veris consisting of forest and grassland patches and used clustering techniques and network analyses to identify sets of populations that are more connected to each other than to other sets of populations and estimated the timing of divergence. Our results showed that spatial genetic variation had a significantly modular structure and consisted of four well-defined modules that almost perfectly coincided with habitat features. Genetic divergence was estimated to have occurred about 114 generations ago, coinciding with historic major changes in the landscape. Overall, these results illustrate how populations adapting to different environments become structured genetically within landscapes on small spatial scales.Pablo DeschepperRein BrysMiguel A. FortunaHans JacquemynNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Pablo Deschepper Rein Brys Miguel A. Fortuna Hans Jacquemyn Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats
description	Abstract Genetic divergence by environment is a process whereby selection causes the formation of gene flow barriers between populations adapting to contrasting environments and is often considered to be the onset of speciation. Nevertheless, the extent to which genetic differentiation by environment on small spatial scales can be detected by means of neutral markers is still subject to debate. Previous research on the perennial herb Primula veris has shown that plants from grassland and forest habitats showed pronounced differences in phenology and flower morphology, suggesting limited gene flow between habitats. To test this hypothesis, we sampled 33 populations of P. veris consisting of forest and grassland patches and used clustering techniques and network analyses to identify sets of populations that are more connected to each other than to other sets of populations and estimated the timing of divergence. Our results showed that spatial genetic variation had a significantly modular structure and consisted of four well-defined modules that almost perfectly coincided with habitat features. Genetic divergence was estimated to have occurred about 114 generations ago, coinciding with historic major changes in the landscape. Overall, these results illustrate how populations adapting to different environments become structured genetically within landscapes on small spatial scales.
format	article
author	Pablo Deschepper Rein Brys Miguel A. Fortuna Hans Jacquemyn
author_facet	Pablo Deschepper Rein Brys Miguel A. Fortuna Hans Jacquemyn
author_sort	Pablo Deschepper
title	Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats
title_short	Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats
title_full	Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats
title_fullStr	Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats
title_full_unstemmed	Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats
title_sort	analysis of spatial genetic variation reveals genetic divergence among populations of primula veris associated to contrasting habitats
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/3634fc08b4a1458e869bf11a6662587a
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Analysis of spatial genetic variation reveals genetic divergence among populations of Primula veris associated to contrasting habitats

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