A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America

Autores
Chiapella, Jorge Oscar; DeBoer, Verónica; Amico, Guillermo Cesar; Kuhl, Joseph
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Premise of the study: In the North American Arctic, the existence of one or several taxa closely related to Deschampsia cespitosa var. cespitosa has remained a puzzle for many years. Extreme morphological variation, lack of clear limits between alleged forms, and an extended geographic range often render identification keys incomplete, and raise the question of how many species this taxon represents. Methods: Morphological and molecular analysis, including multivariate statistics, ITS and the cpDNA marker trnK-rps16, was conducted on D. cespitosa var. cespitosa and related taxa using 201 herbarium specimens from northern North America (Alaska, Canada, and Greenland). Fifty-three morphological centeracters were recorded from all specimens, while sequences were retrieved from 167 specimens. Key results: Results show that Deschampsia cespitosa (L.) P. Beauv. var. cespitosa, D. cespitosa subsp. alpina (L.) Tzvelev, D. cespitosa subsp. beringensis (Hultén) W. E. Lawr., D. brevifolia R. Br., D. cespitosa (L.) P. Beauv. subsp. glauca (Hartm.) C. Hartm., D. mackenzieana Raup, D. cespitosa subsp. orientalis Hultén, and D. pumila (Griseb.) Ostenf. differed significantly in a few morphological variables, but molecularly are a closely related group with several sequences and haplotypes that are nearly identical. Conclusions: Overall, the evidence points to the existence of a single species, Deschampsia cespitosa. The occurrence of slightly different morphological types related to specific geographical distributions allows recognition of three additional taxa at the infraspecific level, D. cespitosa subsp. alpina, D. cespitosa subsp. beringensis, and D. brevifolia. All studied taxa showed morphological variation in a gradient, suggesting the existence of phenotypic plasticity.
Fil: Chiapella, Jorge Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina. Universidad Nacional de Córdoba; Argentina
Fil: DeBoer, Verónica. U. S. Department of Agriculture, Agricultural Research Service, Subarctic Agricultural Research Unit; Estados Unidos. Scientific Crime Detection Laboratory; Estados Unidos
Fil: Amico, Guillermo Cesar. Universidad Nacional del Comahue. Centro Regional Universitario; Argentina
Fil: Kuhl, Joseph. U. S. Department of Agriculture, Agricultural Research Service, Subarctic Agricultural Research Unit; Estados Unidos
Materia
Arctic Artic
Deschampsia
Morphology
Dna
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/13257
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/13257
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North AmericaChiapella, Jorge OscarDeBoer, VerónicaAmico, Guillermo CesarKuhl, JosephArctic ArticDeschampsiaMorphologyDnahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Premise of the study: In the North American Arctic, the existence of one or several taxa closely related to Deschampsia cespitosa var. cespitosa has remained a puzzle for many years. Extreme morphological variation, lack of clear limits between alleged forms, and an extended geographic range often render identification keys incomplete, and raise the question of how many species this taxon represents. Methods: Morphological and molecular analysis, including multivariate statistics, ITS and the cpDNA marker trnK-rps16, was conducted on D. cespitosa var. cespitosa and related taxa using 201 herbarium specimens from northern North America (Alaska, Canada, and Greenland). Fifty-three morphological centeracters were recorded from all specimens, while sequences were retrieved from 167 specimens. Key results: Results show that Deschampsia cespitosa (L.) P. Beauv. var. cespitosa, D. cespitosa subsp. alpina (L.) Tzvelev, D. cespitosa subsp. beringensis (Hultén) W. E. Lawr., D. brevifolia R. Br., D. cespitosa (L.) P. Beauv. subsp. glauca (Hartm.) C. Hartm., D. mackenzieana Raup, D. cespitosa subsp. orientalis Hultén, and D. pumila (Griseb.) Ostenf. differed significantly in a few morphological variables, but molecularly are a closely related group with several sequences and haplotypes that are nearly identical. Conclusions: Overall, the evidence points to the existence of a single species, Deschampsia cespitosa. The occurrence of slightly different morphological types related to specific geographical distributions allows recognition of three additional taxa at the infraspecific level, D. cespitosa subsp. alpina, D. cespitosa subsp. beringensis, and D. brevifolia. All studied taxa showed morphological variation in a gradient, suggesting the existence of phenotypic plasticity.Fil: Chiapella, Jorge Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina. Universidad Nacional de Córdoba; ArgentinaFil: DeBoer, Verónica. U. S. Department of Agriculture, Agricultural Research Service, Subarctic Agricultural Research Unit; Estados Unidos. Scientific Crime Detection Laboratory; Estados UnidosFil: Amico, Guillermo Cesar. Universidad Nacional del Comahue. Centro Regional Universitario; ArgentinaFil: Kuhl, Joseph. U. S. Department of Agriculture, Agricultural Research Service, Subarctic Agricultural Research Unit; Estados UnidosBotanical Society Of America2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/13257Chiapella, Jorge Oscar; DeBoer, Verónica; Amico, Guillermo Cesar; Kuhl, Joseph; A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America; Botanical Society Of America; American Journal Of Botany; 98; 8; 8-2011; 1366-13800002-91221537-2197enginfo:eu-repo/semantics/altIdentifier/url/http://www.amjbot.org/content/98/8/1366.longinfo:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.3732/ajb.1000495info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:09:00Zoai:ri.conicet.gov.ar:11336/13257instacron: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:34982025-09-03 10:09:01.224CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
title A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
spellingShingle A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
Chiapella, Jorge Oscar
Arctic Artic
Deschampsia
Morphology
Dna
title_short A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
title_full A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
title_fullStr A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
title_full_unstemmed A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
title_sort A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America
dc.creator.none.fl_str_mv Chiapella, Jorge Oscar
DeBoer, Verónica
Amico, Guillermo Cesar
Kuhl, Joseph
author Chiapella, Jorge Oscar
author_facet Chiapella, Jorge Oscar
DeBoer, Verónica
Amico, Guillermo Cesar
Kuhl, Joseph
author_role author
author2 DeBoer, Verónica
Amico, Guillermo Cesar
Kuhl, Joseph
author2_role author
author
author
dc.subject.none.fl_str_mv Arctic Artic
Deschampsia
Morphology
Dna
topic Arctic Artic
Deschampsia
Morphology
Dna
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Premise of the study: In the North American Arctic, the existence of one or several taxa closely related to Deschampsia cespitosa var. cespitosa has remained a puzzle for many years. Extreme morphological variation, lack of clear limits between alleged forms, and an extended geographic range often render identification keys incomplete, and raise the question of how many species this taxon represents. Methods: Morphological and molecular analysis, including multivariate statistics, ITS and the cpDNA marker trnK-rps16, was conducted on D. cespitosa var. cespitosa and related taxa using 201 herbarium specimens from northern North America (Alaska, Canada, and Greenland). Fifty-three morphological centeracters were recorded from all specimens, while sequences were retrieved from 167 specimens. Key results: Results show that Deschampsia cespitosa (L.) P. Beauv. var. cespitosa, D. cespitosa subsp. alpina (L.) Tzvelev, D. cespitosa subsp. beringensis (Hultén) W. E. Lawr., D. brevifolia R. Br., D. cespitosa (L.) P. Beauv. subsp. glauca (Hartm.) C. Hartm., D. mackenzieana Raup, D. cespitosa subsp. orientalis Hultén, and D. pumila (Griseb.) Ostenf. differed significantly in a few morphological variables, but molecularly are a closely related group with several sequences and haplotypes that are nearly identical. Conclusions: Overall, the evidence points to the existence of a single species, Deschampsia cespitosa. The occurrence of slightly different morphological types related to specific geographical distributions allows recognition of three additional taxa at the infraspecific level, D. cespitosa subsp. alpina, D. cespitosa subsp. beringensis, and D. brevifolia. All studied taxa showed morphological variation in a gradient, suggesting the existence of phenotypic plasticity.
Fil: Chiapella, Jorge Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina. Universidad Nacional de Córdoba; Argentina
Fil: DeBoer, Verónica. U. S. Department of Agriculture, Agricultural Research Service, Subarctic Agricultural Research Unit; Estados Unidos. Scientific Crime Detection Laboratory; Estados Unidos
Fil: Amico, Guillermo Cesar. Universidad Nacional del Comahue. Centro Regional Universitario; Argentina
Fil: Kuhl, Joseph. U. S. Department of Agriculture, Agricultural Research Service, Subarctic Agricultural Research Unit; Estados Unidos
description Premise of the study: In the North American Arctic, the existence of one or several taxa closely related to Deschampsia cespitosa var. cespitosa has remained a puzzle for many years. Extreme morphological variation, lack of clear limits between alleged forms, and an extended geographic range often render identification keys incomplete, and raise the question of how many species this taxon represents. Methods: Morphological and molecular analysis, including multivariate statistics, ITS and the cpDNA marker trnK-rps16, was conducted on D. cespitosa var. cespitosa and related taxa using 201 herbarium specimens from northern North America (Alaska, Canada, and Greenland). Fifty-three morphological centeracters were recorded from all specimens, while sequences were retrieved from 167 specimens. Key results: Results show that Deschampsia cespitosa (L.) P. Beauv. var. cespitosa, D. cespitosa subsp. alpina (L.) Tzvelev, D. cespitosa subsp. beringensis (Hultén) W. E. Lawr., D. brevifolia R. Br., D. cespitosa (L.) P. Beauv. subsp. glauca (Hartm.) C. Hartm., D. mackenzieana Raup, D. cespitosa subsp. orientalis Hultén, and D. pumila (Griseb.) Ostenf. differed significantly in a few morphological variables, but molecularly are a closely related group with several sequences and haplotypes that are nearly identical. Conclusions: Overall, the evidence points to the existence of a single species, Deschampsia cespitosa. The occurrence of slightly different morphological types related to specific geographical distributions allows recognition of three additional taxa at the infraspecific level, D. cespitosa subsp. alpina, D. cespitosa subsp. beringensis, and D. brevifolia. All studied taxa showed morphological variation in a gradient, suggesting the existence of phenotypic plasticity.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
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/11336/13257
Chiapella, Jorge Oscar; DeBoer, Verónica; Amico, Guillermo Cesar; Kuhl, Joseph; A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America; Botanical Society Of America; American Journal Of Botany; 98; 8; 8-2011; 1366-1380
0002-9122
1537-2197
url http://hdl.handle.net/11336/13257
identifier_str_mv Chiapella, Jorge Oscar; DeBoer, Verónica; Amico, Guillermo Cesar; Kuhl, Joseph; A morphological and molecular study in the Deschampsia cespitosa complex (Poaceae; Poeae; Airinae) in northern North America; Botanical Society Of America; American Journal Of Botany; 98; 8; 8-2011; 1366-1380
0002-9122
1537-2197
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.amjbot.org/content/98/8/1366.long
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.3732/ajb.1000495
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
application/pdf
dc.publisher.none.fl_str_mv Botanical Society Of America
publisher.none.fl_str_mv Botanical Society Of America
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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 12.885934

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