Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale
Abstract 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, o...
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Online Access: | http://dx.doi.org/10.1093/aob/mcz182 http://academic.oup.com/aob/advance-article-pdf/doi/10.1093/aob/mcz182/30342438/mcz182.pdf |
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croxfordunivpr:10.1093/aob/mcz182 2023-12-31T10:07:53+01:00 Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale Rojas-Andrés, Blanca M Padilla-García, Nélida Pedro, Manuel de López-González, Noemí Delgado, Luis Albach, Dirk C Castro, Mariana Castro, Sílvia Loureiro, João Martínez-Ortega, M Montserrat 2019 http://dx.doi.org/10.1093/aob/mcz182 http://academic.oup.com/aob/advance-article-pdf/doi/10.1093/aob/mcz182/30342438/mcz182.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Annals of Botany ISSN 0305-7364 1095-8290 Plant Science journal-article 2019 croxfordunivpr https://doi.org/10.1093/aob/mcz182 2023-12-06T08:49:42Z Abstract 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 ca. 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 its relationship with 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 PCoA) analyses. Key Results Four ploidy levels (2x, 4x, 6x, 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 ... Article in Journal/Newspaper Ice permafrost Oxford University Press (via Crossref) Annals of Botany |
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topic |
Plant Science |
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Plant Science Rojas-Andrés, Blanca M Padilla-García, Nélida Pedro, Manuel de López-González, Noemí Delgado, Luis Albach, Dirk C Castro, Mariana Castro, Sílvia Loureiro, João Martínez-Ortega, M Montserrat Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
topic_facet |
Plant Science |
description |
Abstract 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 ca. 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 its relationship with 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 PCoA) analyses. Key Results Four ploidy levels (2x, 4x, 6x, 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 ... |
format |
Article in Journal/Newspaper |
author |
Rojas-Andrés, Blanca M Padilla-García, Nélida Pedro, Manuel de López-González, Noemí Delgado, Luis Albach, Dirk C Castro, Mariana Castro, Sílvia Loureiro, João Martínez-Ortega, M Montserrat |
author_facet |
Rojas-Andrés, Blanca M Padilla-García, Nélida Pedro, Manuel de López-González, Noemí Delgado, Luis Albach, Dirk C Castro, Mariana Castro, Sílvia Loureiro, João Martínez-Ortega, M Montserrat |
author_sort |
Rojas-Andrés, Blanca M |
title |
Environmental differences are correlated with the distribution pattern of cytotypes in Veronica subsection Pentasepalae at a broad scale |
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 |
publisher |
Oxford University Press (OUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1093/aob/mcz182 http://academic.oup.com/aob/advance-article-pdf/doi/10.1093/aob/mcz182/30342438/mcz182.pdf |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Annals of Botany ISSN 0305-7364 1095-8290 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/aob/mcz182 |
container_title |
Annals of Botany |
_version_ |
1786840392752168960 |