Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale
[EN] Background and Aims: The distribution of cytotypes and its potential correlation with environmental variables represent a cornerstone to understanding the origin and maintenance of polyploid lineages. Although many studies have addressed this question in single species at a regional scale, only...
| Autores: | , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universidad de Salamanca (USAL) |
| Repositorio: | GREDOS. Repositorio Institucional de la Universidad de Salamanca |
| OAI Identifier: | oai:gredos.usal.es:10366/154714 |
| Acceso en línea: | http://hdl.handle.net/10366/154714 |
| Access Level: | acceso abierto |
| Palabra clave: | Cytotype distribution patterns ecological differentiation genome downsizing historical biogeography minority cytotype exclusion ploidy level polyploidy Quaternary glaciations Veronica subsection Pentasepalae Veronica Polyploidy 2417 Biología Vegetal (Botánica) 2505.01-1 Biogeografía Botánica 2417.13 Ecología Vegetal poliploidía |
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Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scaleRojas Andrés, Blanca M.Padilla García, NélidaPedro , Manuel deLópez González, NoemíDelgado Sánchez, LuisAlbach, Dirk C.Castro, MarianaCastro, SílviaLoureiro, JoãoMartínez Ortega, María MontserratCytotype distribution patternsecological differentiationgenome downsizinghistorical biogeographyminority cytotype exclusionploidy levelpolyploidyQuaternary glaciationsVeronica subsection PentasepalaeVeronicaPolyploidy2417 Biología Vegetal (Botánica)2505.01-1 Biogeografía Botánica2417.13 Ecología VegetalVeronicapoliploidía[EN] Background and Aims: The distribution of cytotypes and its potential correlation with environmental variables represent a cornerstone to understanding the origin and maintenance of polyploid lineages. Although many studies have addressed this question in single species at a regional scale, only a few have attempted to decipher this enigma in groups of closely related species at a broad intercontinental geographical scale. Here, we consider approx. 20 species of a diploid–polyploid complex (Veronica subsect. Pentasepalae) of recent and rapid diversification represented in Europe and North Africa to study the frequency and distribution of cytotypes and their relationship to environmental variables. Methods: A total of 680 individuals (207 populations) were sampled. Ploidy levels were determined using flow cytometry. Ecological differentiation among cytotypes was tested using climatic and environmental variables related to temperature, precipitation, vegetation and biogeographical region, among others, and by performing univariate and multivariate (constrained principal coordinates analysis) analyses. Key Results: Four ploidy levels (2x, 4x, 6x and 8x) were found and genome downsizing was observed to occur within the group. Plants of different ploidy level are ecologically differentiated, with hexaploids and octoploids occurring in wetter and colder habitats with a higher seasonality than diploids. A south to north distribution pattern was found, with diploids occupying southern refugial areas and octoploids being more frequent in northern regions of Europe above the permafrost boundary. Conclusions: The distribution of cytotypes can be explained by ecological differentiation, the geographical position of refuge areas during the Quaternary climatic oscillations as well as by ice and permafrost retreat patterns. The Balkan Peninsula constitutes the most important contact zone between cytotypes. This work provides the first comprehensive ploidy screening within V. subsect. Pentasepalae at a broad scale and indicates that polyploidy and genome downsizing might have contributed to the colonization of new habitats in a recently diverged polyploid complex.Spanish Ministerio de Economía y Competitividad [projects CGL2009-07555 and CGL2012-32574]; the Spanish Ministerio de Ciencia e Innovación [PhD grants AP2008-03434 to B.R.A. and AP2010-2968 to N.L.G.]; and the University of Salamanca [PhD grant to N.P.G. co-financed by Banco Santander].Oxford University Press202420242020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/154714reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésCGL2009-07555CGL2012-32574Attribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1547142026-06-07T06:28:51Z |
| dc.title.none.fl_str_mv |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
| title |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
| spellingShingle |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale Rojas Andrés, Blanca M. Cytotype distribution patterns ecological differentiation genome downsizing historical biogeography minority cytotype exclusion ploidy level polyploidy Quaternary glaciations Veronica subsection Pentasepalae Veronica Polyploidy 2417 Biología Vegetal (Botánica) 2505.01-1 Biogeografía Botánica 2417.13 Ecología Vegetal Veronica poliploidía |
| title_short |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
| title_full |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
| title_fullStr |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
| title_full_unstemmed |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
| title_sort |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
| dc.creator.none.fl_str_mv |
Rojas Andrés, Blanca M. Padilla García, Nélida Pedro , Manuel de López González, Noemí Delgado Sánchez, Luis Albach, Dirk C. Castro, Mariana Castro, Sílvia Loureiro, João Martínez Ortega, María Montserrat |
| author |
Rojas Andrés, Blanca M. |
| author_facet |
Rojas Andrés, Blanca M. Padilla García, Nélida Pedro , Manuel de López González, Noemí Delgado Sánchez, Luis Albach, Dirk C. Castro, Mariana Castro, Sílvia Loureiro, João Martínez Ortega, María Montserrat |
| author_role |
author |
| author2 |
Padilla García, Nélida Pedro , Manuel de López González, Noemí Delgado Sánchez, Luis Albach, Dirk C. Castro, Mariana Castro, Sílvia Loureiro, João Martínez Ortega, María Montserrat |
| author2_role |
author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Cytotype distribution patterns ecological differentiation genome downsizing historical biogeography minority cytotype exclusion ploidy level polyploidy Quaternary glaciations Veronica subsection Pentasepalae Veronica Polyploidy 2417 Biología Vegetal (Botánica) 2505.01-1 Biogeografía Botánica 2417.13 Ecología Vegetal Veronica poliploidía |
| topic |
Cytotype distribution patterns ecological differentiation genome downsizing historical biogeography minority cytotype exclusion ploidy level polyploidy Quaternary glaciations Veronica subsection Pentasepalae Veronica Polyploidy 2417 Biología Vegetal (Botánica) 2505.01-1 Biogeografía Botánica 2417.13 Ecología Vegetal Veronica poliploidía |
| description |
[EN] Background and Aims: The distribution of cytotypes and its potential correlation with environmental variables represent a cornerstone to understanding the origin and maintenance of polyploid lineages. Although many studies have addressed this question in single species at a regional scale, only a few have attempted to decipher this enigma in groups of closely related species at a broad intercontinental geographical scale. Here, we consider approx. 20 species of a diploid–polyploid complex (Veronica subsect. Pentasepalae) of recent and rapid diversification represented in Europe and North Africa to study the frequency and distribution of cytotypes and their relationship to environmental variables. Methods: A total of 680 individuals (207 populations) were sampled. Ploidy levels were determined using flow cytometry. Ecological differentiation among cytotypes was tested using climatic and environmental variables related to temperature, precipitation, vegetation and biogeographical region, among others, and by performing univariate and multivariate (constrained principal coordinates analysis) analyses. Key Results: Four ploidy levels (2x, 4x, 6x and 8x) were found and genome downsizing was observed to occur within the group. Plants of different ploidy level are ecologically differentiated, with hexaploids and octoploids occurring in wetter and colder habitats with a higher seasonality than diploids. A south to north distribution pattern was found, with diploids occupying southern refugial areas and octoploids being more frequent in northern regions of Europe above the permafrost boundary. Conclusions: The distribution of cytotypes can be explained by ecological differentiation, the geographical position of refuge areas during the Quaternary climatic oscillations as well as by ice and permafrost retreat patterns. The Balkan Peninsula constitutes the most important contact zone between cytotypes. This work provides the first comprehensive ploidy screening within V. subsect. Pentasepalae at a broad scale and indicates that polyploidy and genome downsizing might have contributed to the colonization of new habitats in a recently diverged polyploid complex. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 2024 2024 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10366/154714 |
| url |
http://hdl.handle.net/10366/154714 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
CGL2009-07555 CGL2012-32574 |
| dc.rights.none.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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application/pdf |
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Oxford University Press |
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Oxford University Press |
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reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca instname:Universidad de Salamanca (USAL) |
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Universidad de Salamanca (USAL) |
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GREDOS. Repositorio Institucional de la Universidad de Salamanca |
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GREDOS. Repositorio Institucional de la Universidad de Salamanca |
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15,198674 |