Cargando…
Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii
It has recently become clear that many invasive species have evolved in situ via hybridization or polyploidy from progenitors which themselves are introduced species. For species formed by hybridization or polyploidy, genetic diversity within the newly formed species is influenced by the number of i...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4947149/ https://www.ncbi.nlm.nih.gov/pubmed/27468305 http://dx.doi.org/10.1111/eva.12399 |
_version_ | 1782443119211446272 |
---|---|
author | Welles, Shana R. Ellstrand, Norman C. |
author_facet | Welles, Shana R. Ellstrand, Norman C. |
author_sort | Welles, Shana R. |
collection | PubMed |
description | It has recently become clear that many invasive species have evolved in situ via hybridization or polyploidy from progenitors which themselves are introduced species. For species formed by hybridization or polyploidy, genetic diversity within the newly formed species is influenced by the number of independent evolutionary origins of the species. For recently formed species, an analysis of genetic structure can provide insight into the number of independent origin events involved in the formation of the species. For a putative invasive allopolyploid species, the number of origins involved in the species formation, the genetic diversity present within these origins, and the level of gene flow between independent origins determines the genetic composition of the neospecies. Here we analyze the genetic structure of the newly formed allopolyploid species, Salsola ryanii, a tumbleweed which evolved within the last 20–100 years in California. We utilize the genetic structure analysis to determine that this new species is the result of at least three independent allopolyplodization events followed by gene flow between the descendants of independent origins. |
format | Online Article Text |
id | pubmed-4947149 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-49471492016-07-27 Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii Welles, Shana R. Ellstrand, Norman C. Evol Appl Original Articles It has recently become clear that many invasive species have evolved in situ via hybridization or polyploidy from progenitors which themselves are introduced species. For species formed by hybridization or polyploidy, genetic diversity within the newly formed species is influenced by the number of independent evolutionary origins of the species. For recently formed species, an analysis of genetic structure can provide insight into the number of independent origin events involved in the formation of the species. For a putative invasive allopolyploid species, the number of origins involved in the species formation, the genetic diversity present within these origins, and the level of gene flow between independent origins determines the genetic composition of the neospecies. Here we analyze the genetic structure of the newly formed allopolyploid species, Salsola ryanii, a tumbleweed which evolved within the last 20–100 years in California. We utilize the genetic structure analysis to determine that this new species is the result of at least three independent allopolyplodization events followed by gene flow between the descendants of independent origins. John Wiley and Sons Inc. 2016-07-13 /pmc/articles/PMC4947149/ /pubmed/27468305 http://dx.doi.org/10.1111/eva.12399 Text en © 2016 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Welles, Shana R. Ellstrand, Norman C. Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii |
title | Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii
|
title_full | Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii
|
title_fullStr | Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii
|
title_full_unstemmed | Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii
|
title_short | Genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed Salsola ryanii
|
title_sort | genetic structure reveals a history of multiple independent origins followed by admixture in the allopolyploid weed salsola ryanii |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4947149/ https://www.ncbi.nlm.nih.gov/pubmed/27468305 http://dx.doi.org/10.1111/eva.12399 |
work_keys_str_mv | AT wellesshanar geneticstructurerevealsahistoryofmultipleindependentoriginsfollowedbyadmixtureintheallopolyploidweedsalsolaryanii AT ellstrandnormanc geneticstructurerevealsahistoryofmultipleindependentoriginsfollowedbyadmixtureintheallopolyploidweedsalsolaryanii |