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Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum
Management of wild peppers in Mexico has occurred for a long time without clear phenotypic signs of domestication. However, pre-domestication management could have implications for the population's genetic richness. To test this hypothesis we analysed 27 wild (W), let standing (LS) and cultivat...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3232243/ https://www.ncbi.nlm.nih.gov/pubmed/22163053 http://dx.doi.org/10.1371/journal.pone.0028715 |
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author | González-Jara, Pablo Moreno-Letelier, Alejandra Fraile, Aurora Piñero, Daniel García-Arenal, Fernando |
author_facet | González-Jara, Pablo Moreno-Letelier, Alejandra Fraile, Aurora Piñero, Daniel García-Arenal, Fernando |
author_sort | González-Jara, Pablo |
collection | PubMed |
description | Management of wild peppers in Mexico has occurred for a long time without clear phenotypic signs of domestication. However, pre-domestication management could have implications for the population's genetic richness. To test this hypothesis we analysed 27 wild (W), let standing (LS) and cultivated (C) populations, plus 7 samples from local markets (LM), with nine polymorphic microsatellite markers. Two hundred and fifty two alleles were identified, averaging 28 per locus. Allele number was higher in W, and 15 and 40% less in LS and C populations, respectively. Genetic variation had a significant population structure. In W populations, structure was associated with ecological and geographic areas according to isolation by distance. When LM and C populations where included in the analysis, differentiation was no longer apparent. Most LM were related to distant populations from Sierra Madre Oriental, which represents their probable origin. Historical demography shows a recent decline in all W populations. Thus, pre-domestication human management is associated with a significant reduction of genetic diversity and with a loss of differentiation suggesting movement among regions by man. Measures to conserve wild and managed populations should be implemented to maintain the source and the architecture of genetic variation in this important crop relative. |
format | Online Article Text |
id | pubmed-3232243 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-32322432011-12-09 Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum González-Jara, Pablo Moreno-Letelier, Alejandra Fraile, Aurora Piñero, Daniel García-Arenal, Fernando PLoS One Research Article Management of wild peppers in Mexico has occurred for a long time without clear phenotypic signs of domestication. However, pre-domestication management could have implications for the population's genetic richness. To test this hypothesis we analysed 27 wild (W), let standing (LS) and cultivated (C) populations, plus 7 samples from local markets (LM), with nine polymorphic microsatellite markers. Two hundred and fifty two alleles were identified, averaging 28 per locus. Allele number was higher in W, and 15 and 40% less in LS and C populations, respectively. Genetic variation had a significant population structure. In W populations, structure was associated with ecological and geographic areas according to isolation by distance. When LM and C populations where included in the analysis, differentiation was no longer apparent. Most LM were related to distant populations from Sierra Madre Oriental, which represents their probable origin. Historical demography shows a recent decline in all W populations. Thus, pre-domestication human management is associated with a significant reduction of genetic diversity and with a loss of differentiation suggesting movement among regions by man. Measures to conserve wild and managed populations should be implemented to maintain the source and the architecture of genetic variation in this important crop relative. Public Library of Science 2011-12-06 /pmc/articles/PMC3232243/ /pubmed/22163053 http://dx.doi.org/10.1371/journal.pone.0028715 Text en González-Jara et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article González-Jara, Pablo Moreno-Letelier, Alejandra Fraile, Aurora Piñero, Daniel García-Arenal, Fernando Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum |
title | Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum
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title_full | Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum
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title_fullStr | Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum
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title_full_unstemmed | Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum
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title_short | Impact of Human Management on the Genetic Variation of Wild Pepper, Capsicum annuum var. glabriusculum
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title_sort | impact of human management on the genetic variation of wild pepper, capsicum annuum var. glabriusculum |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3232243/ https://www.ncbi.nlm.nih.gov/pubmed/22163053 http://dx.doi.org/10.1371/journal.pone.0028715 |
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