Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.

<h4>Background and aims</h4>Solving relationships of recently diverged taxa, poses a challenge due to shared polymorphism and weak reproductive barriers. Multiple lines of evidence are needed to identify independently evolving lineages. This is especially true of long-lived species with...

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Autores principales:	Alejandra Moreno-Letelier, Alejandra Ortíz-Medrano, Daniel Piñero
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2ef41d57d33f4b22866106f3d27c8496
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spelling	oai:doaj.org-article:2ef41d57d33f4b22866106f3d27c84962021-11-18T08:49:06ZNiche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.1932-620310.1371/journal.pone.0078228https://doaj.org/article/2ef41d57d33f4b22866106f3d27c84962013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24205167/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background and aims</h4>Solving relationships of recently diverged taxa, poses a challenge due to shared polymorphism and weak reproductive barriers. Multiple lines of evidence are needed to identify independently evolving lineages. This is especially true of long-lived species with large effective population sizes, and slow rates of lineage sorting. North American pines are an interesting group to test this multiple approach. Our aim is to combine cytoplasmic genetic markers with environmental information to clarify species boundaries and relationships of the species complex of Pinus flexilis, Pinus ayacahuite, and Pinus strobiformis.<h4>Methods</h4>Mitochondrial and chloroplast sequences were combined with previously obtained microsatellite data and contrasted with environmental information to reconstruct phylogenetic relationships of the species complex. Ecological niche models were compared to test if ecological divergence is significant among species.<h4>Key results and conclusion</h4>Separately, both genetic and ecological evidence support a clear differentiation of all three species but with different topology, but also reveal an ancestral contact zone between P. strobiformis and P. ayacahuite. The marked ecological differentiation of P. flexilis suggests that ecological speciation has occurred in this lineage, but this is not reflected in neutral markers. The inclusion of environmental traits in phylogenetic reconstruction improved the resolution of internal branches. We suggest that combining environmental and genetic information would be useful for species delimitation and phylogenetic studies in other recently diverged species complexes.Alejandra Moreno-LetelierAlejandra Ortíz-MedranoDaniel PiñeroPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 10, p e78228 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alejandra Moreno-Letelier Alejandra Ortíz-Medrano Daniel Piñero Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.
description	<h4>Background and aims</h4>Solving relationships of recently diverged taxa, poses a challenge due to shared polymorphism and weak reproductive barriers. Multiple lines of evidence are needed to identify independently evolving lineages. This is especially true of long-lived species with large effective population sizes, and slow rates of lineage sorting. North American pines are an interesting group to test this multiple approach. Our aim is to combine cytoplasmic genetic markers with environmental information to clarify species boundaries and relationships of the species complex of Pinus flexilis, Pinus ayacahuite, and Pinus strobiformis.<h4>Methods</h4>Mitochondrial and chloroplast sequences were combined with previously obtained microsatellite data and contrasted with environmental information to reconstruct phylogenetic relationships of the species complex. Ecological niche models were compared to test if ecological divergence is significant among species.<h4>Key results and conclusion</h4>Separately, both genetic and ecological evidence support a clear differentiation of all three species but with different topology, but also reveal an ancestral contact zone between P. strobiformis and P. ayacahuite. The marked ecological differentiation of P. flexilis suggests that ecological speciation has occurred in this lineage, but this is not reflected in neutral markers. The inclusion of environmental traits in phylogenetic reconstruction improved the resolution of internal branches. We suggest that combining environmental and genetic information would be useful for species delimitation and phylogenetic studies in other recently diverged species complexes.
format	article
author	Alejandra Moreno-Letelier Alejandra Ortíz-Medrano Daniel Piñero
author_facet	Alejandra Moreno-Letelier Alejandra Ortíz-Medrano Daniel Piñero
author_sort	Alejandra Moreno-Letelier
title	Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.
title_short	Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.
title_full	Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.
title_fullStr	Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.
title_full_unstemmed	Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.
title_sort	niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/2ef41d57d33f4b22866106f3d27c8496
work_keys_str_mv	AT alejandramorenoletelier nichedivergenceversusneutralprocessescombinedenvironmentalandgeneticanalysesidentifycontrastingpatternsofdifferentiationinrecentlydivergedpinespecies AT alejandraortizmedrano nichedivergenceversusneutralprocessescombinedenvironmentalandgeneticanalysesidentifycontrastingpatternsofdifferentiationinrecentlydivergedpinespecies AT danielpinero nichedivergenceversusneutralprocessescombinedenvironmentalandgeneticanalysesidentifycontrastingpatternsofdifferentiationinrecentlydivergedpinespecies
_version_	1718421252207542272

Niche divergence versus neutral processes: combined environmental and genetic analyses identify contrasting patterns of differentiation in recently diverged pine species.

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