Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina

Premise of research. The geographical distribution of ploidy levels provides insights into evolutionary pathways. For the subtropical tree line species Polylepis australis (Rosaceae), we tested the hypotheses that (1a) incidence of polyploidy is higher in the northern parts than in the southern part...

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Autores: Kessler, Michael, Kühn, Andreas, Solis Neffa, Viviana Griselda, Hensen, Isabell
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/19737
Acesso em linha:http://hdl.handle.net/11336/19737
Access Level:acceso abierto
Palavra-chave:Andes
Autopolyploidy
Polylepis
Rosaceae
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
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oai_identifier_str oai:ri.conicet.gov.ar:11336/19737
network_acronym_str AR
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repository_id_str
spelling Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in ArgentinaKessler, MichaelKühn, AndreasSolis Neffa, Viviana GriseldaHensen, IsabellAndesAutopolyploidyPolylepisRosaceaehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Premise of research. The geographical distribution of ploidy levels provides insights into evolutionary pathways. For the subtropical tree line species Polylepis australis (Rosaceae), we tested the hypotheses that (1a) incidence of polyploidy is higher in the northern parts than in the southern parts of the species range due to the presence of related species that might favor hybridization (allopolyploidy), (1b) incidence of polyploidy is higher in the southern part of the range because the species here presumably reaches the limit of its environmental tolerance (autopolyploidy), and (2) ploidy levels increase with elevation, as polyploids are believed to perform better in stressful environments. Methodology. We used flow cytometry to assess the ploidy levels of 361 individuals from 27 populations across most of the distribution range of the species in two disjunct Argentinean high mountain regions. Pivotal results. The northern stands had lower ploidy levels (diploid) than the southern populations, in which we found mainly tetraploids intermixed with diploids, triploids, and a single hexaploid. We did not find any environmental correlates to the geographical distribution of ploidy levels. Conclusions. Polyploidy appears to have arisen in P. australis via autopolyploidy, either twice in different parts of the range or, more likely, once followed by long-distance dispersal. This is also supported by amplified fragment length polymorphism (AFLP) data from a previous study that confirmed higher numbers of AFLP fragments and private bands in the southern populations. The checkerboard distribution of ploidy levels in the southern Sierras de Co´ rdoba may represent a time capture of the spread of the polyploid condition. We propose that polyploidy represents a key factor to understanding the high morphological variation in P. australis and should be taken into account in ongoing reforestation activities.Fil: Kessler, Michael. University of Zurich; SuizaFil: Kühn, Andreas. Martin-Luther-University Halle-Wittenberg; AlemaniaFil: Solis Neffa, Viviana Griselda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); ArgentinaFil: Hensen, Isabell. German Centre for Integrative Biodiversity Research; AlemaniaUniv Chicago Press2014-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/19737Kessler, Michael; Kühn, Andreas; Solis Neffa, Viviana Griselda; Hensen, Isabell; Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina; Univ Chicago Press; International Journal Of Plant Sciences; 175; 8; 9-2014; 955-9611058-58931537-5315CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1086/677649info:eu-repo/semantics/altIdentifier/url/http://www.journals.uchicago.edu/doi/10.1086/677649info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:08:40Zoai:ri.conicet.gov.ar:11336/19737instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 14:08:40.375CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
title Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
spellingShingle Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
Kessler, Michael
Andes
Autopolyploidy
Polylepis
Rosaceae
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
title_short Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
title_full Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
title_fullStr Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
title_full_unstemmed Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
title_sort Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina
dc.creator.none.fl_str_mv Kessler, Michael
Kühn, Andreas
Solis Neffa, Viviana Griselda
Hensen, Isabell
author Kessler, Michael
author_facet Kessler, Michael
Kühn, Andreas
Solis Neffa, Viviana Griselda
Hensen, Isabell
author_role author
author2 Kühn, Andreas
Solis Neffa, Viviana Griselda
Hensen, Isabell
author2_role author
author
author
dc.subject.none.fl_str_mv Andes
Autopolyploidy
Polylepis
Rosaceae
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
topic Andes
Autopolyploidy
Polylepis
Rosaceae
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
description Premise of research. The geographical distribution of ploidy levels provides insights into evolutionary pathways. For the subtropical tree line species Polylepis australis (Rosaceae), we tested the hypotheses that (1a) incidence of polyploidy is higher in the northern parts than in the southern parts of the species range due to the presence of related species that might favor hybridization (allopolyploidy), (1b) incidence of polyploidy is higher in the southern part of the range because the species here presumably reaches the limit of its environmental tolerance (autopolyploidy), and (2) ploidy levels increase with elevation, as polyploids are believed to perform better in stressful environments. Methodology. We used flow cytometry to assess the ploidy levels of 361 individuals from 27 populations across most of the distribution range of the species in two disjunct Argentinean high mountain regions. Pivotal results. The northern stands had lower ploidy levels (diploid) than the southern populations, in which we found mainly tetraploids intermixed with diploids, triploids, and a single hexaploid. We did not find any environmental correlates to the geographical distribution of ploidy levels. Conclusions. Polyploidy appears to have arisen in P. australis via autopolyploidy, either twice in different parts of the range or, more likely, once followed by long-distance dispersal. This is also supported by amplified fragment length polymorphism (AFLP) data from a previous study that confirmed higher numbers of AFLP fragments and private bands in the southern populations. The checkerboard distribution of ploidy levels in the southern Sierras de Co´ rdoba may represent a time capture of the spread of the polyploid condition. We propose that polyploidy represents a key factor to understanding the high morphological variation in P. australis and should be taken into account in ongoing reforestation activities.
publishDate 2014
dc.date.none.fl_str_mv 2014-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/19737
Kessler, Michael; Kühn, Andreas; Solis Neffa, Viviana Griselda; Hensen, Isabell; Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina; Univ Chicago Press; International Journal Of Plant Sciences; 175; 8; 9-2014; 955-961
1058-5893
1537-5315
CONICET Digital
CONICET
url http://hdl.handle.net/11336/19737
identifier_str_mv Kessler, Michael; Kühn, Andreas; Solis Neffa, Viviana Griselda; Hensen, Isabell; Complex Geographical Distribution of Ploidy Levels in Polylepis australis (Rosaceae), an Endemic Tree Line Species in Argentina; Univ Chicago Press; International Journal Of Plant Sciences; 175; 8; 9-2014; 955-961
1058-5893
1537-5315
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1086/677649
info:eu-repo/semantics/altIdentifier/url/http://www.journals.uchicago.edu/doi/10.1086/677649
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Univ Chicago Press
publisher.none.fl_str_mv Univ Chicago Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,223283

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