Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.

Aquilegia formosa and pubescens are two closely related species belonging to the columbine genus. Despite their morphological and ecological differences, previous studies have revealed a large degree of intercompatibility, as well as little sequence divergence between these two taxa. We compared the...

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Main Authors:	Elizabeth A Cooper, Justen B Whittall, Scott A Hodges, Magnus Nordborg
Format:	article
Language:	EN
Published:	Public Library of Science (PLoS) 2010
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/afa10c64c03249089d94ddf5c8c930bc
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spelling	oai:doaj.org-article:afa10c64c03249089d94ddf5c8c930bc2021-11-25T06:26:37ZGenetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.1932-620310.1371/journal.pone.0008655https://doaj.org/article/afa10c64c03249089d94ddf5c8c930bc2010-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20098727/?tool=EBIhttps://doaj.org/toc/1932-6203Aquilegia formosa and pubescens are two closely related species belonging to the columbine genus. Despite their morphological and ecological differences, previous studies have revealed a large degree of intercompatibility, as well as little sequence divergence between these two taxa. We compared the inter- and intraspecific patterns of variation for 9 nuclear loci, and found that the two species were practically indistinguishable at the level of DNA sequence polymorphism, indicating either very recent speciation or continued gene flow. As a comparison, we also analyzed variation at two loci across 30 other Aquilegia taxa; this revealed slightly more differentiation among taxa, which seemed best explained by geographic distance. By contrast, we found no evidence for isolation by distance on a more local geographic scale. We conclude that the extremely low levels of genetic differentiation between A. formosa and A. pubescens at neutral loci will facilitate future genome-wide scans for speciation genes.Elizabeth A CooperJusten B WhittallScott A HodgesMagnus NordborgPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 1, p e8655 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Elizabeth A Cooper Justen B Whittall Scott A Hodges Magnus Nordborg Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.
description	Aquilegia formosa and pubescens are two closely related species belonging to the columbine genus. Despite their morphological and ecological differences, previous studies have revealed a large degree of intercompatibility, as well as little sequence divergence between these two taxa. We compared the inter- and intraspecific patterns of variation for 9 nuclear loci, and found that the two species were practically indistinguishable at the level of DNA sequence polymorphism, indicating either very recent speciation or continued gene flow. As a comparison, we also analyzed variation at two loci across 30 other Aquilegia taxa; this revealed slightly more differentiation among taxa, which seemed best explained by geographic distance. By contrast, we found no evidence for isolation by distance on a more local geographic scale. We conclude that the extremely low levels of genetic differentiation between A. formosa and A. pubescens at neutral loci will facilitate future genome-wide scans for speciation genes.
format	article
author	Elizabeth A Cooper Justen B Whittall Scott A Hodges Magnus Nordborg
author_facet	Elizabeth A Cooper Justen B Whittall Scott A Hodges Magnus Nordborg
author_sort	Elizabeth A Cooper
title	Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.
title_short	Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.
title_full	Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.
title_fullStr	Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.
title_full_unstemmed	Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.
title_sort	genetic variation at nuclear loci fails to distinguish two morphologically distinct species of aquilegia.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/afa10c64c03249089d94ddf5c8c930bc
work_keys_str_mv	AT elizabethacooper geneticvariationatnuclearlocifailstodistinguishtwomorphologicallydistinctspeciesofaquilegia AT justenbwhittall geneticvariationatnuclearlocifailstodistinguishtwomorphologicallydistinctspeciesofaquilegia AT scottahodges geneticvariationatnuclearlocifailstodistinguishtwomorphologicallydistinctspeciesofaquilegia AT magnusnordborg geneticvariationatnuclearlocifailstodistinguishtwomorphologicallydistinctspeciesofaquilegia
_version_	1718413703033913344

Genetic variation at nuclear loci fails to distinguish two morphologically distinct species of Aquilegia.

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