A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)

The family Blechnaceae is a lineage that includes about 280 species in 25 genera, and together with the Onocleaceae is the most recent family of ferns. Within this family, Parablechnum is the most diverse genus, with about 65 species. The distribution of this genus reflects very well the distributio...

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Detalles Bibliográficos
Autor: Molino De Miguel, Sonia
Tipo de recurso: tesis doctoral
Fecha de publicación:2022
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/3935
Acceso en línea:https://hdl.handle.net/20.500.14352/3935
Access Level:acceso abierto
Palabra clave:582.37/.39(043.2)
Helechos
Ferns
Botánica (Biología)
2417.03 Botánica General
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spelling A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)Sinopsis global y aproximación a la filogenia molecular del género Parablechnum C. Presl (Blechnaceae, Polypodiopsida)Molino De Miguel, Sonia582.37/.39(043.2)HelechosFernsBotánica (Biología)2417.03 Botánica GeneralThe family Blechnaceae is a lineage that includes about 280 species in 25 genera, and together with the Onocleaceae is the most recent family of ferns. Within this family, Parablechnum is the most diverse genus, with about 65 species. The distribution of this genus reflects very well the distribution of the most diverse areas of the family: Central and South America, the Austropacific and some representatives in southern Africa, Madagascar and the Mascarene archipelago.The distribution of this genus reflects a disjunction that could easily be explained by Gondwanan vicariance, but the available dating indicates that the genus underwent a rapid radiation after the separation from Gondwana, which would imply that its distribution is due to long-distance dispersal (LDD). In addition, the intra-continental dispersal of the genus together with other problems such as poor representation in herbaria has made the taxonomy of Parablechnum unclear to date.In this context, a revision of the systematics of the genus has been proposed using herbarium material and some field collections to elucidate the taxonomy and evolutionary history of the genus.For this purpose, 3,738 specimens from 52 herbariums of all the species of Parablechnum conceived to date have been examined physically and digitally. Where possible, the anatomy of the fertile pinnae and epidermis was studied, and spores and sporangia were observed by light and electron microscopy. In addition, DNA was extracted from 127 individuals and five chloroplastic markers were sequenced for maximum likelihood phylogenetic trees and Bayesian inference. In addition, a dating have been carried out. For this purpose, 582 sequences were used, 469 of which were newly created in this work...Universidad Complutense de MadridMedina Bujalance, RafaelTesto, WestonVicent Fernández, MaríaUniversidad Complutense de Madrid20222022-11-0720222022-11-07doctoral thesishttp://purl.org/coar/resource_type/c_db06info:eu-repo/semantics/doctoralThesisapplication/pdfhttps://hdl.handle.net/20.500.14352/3935reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/39352026-06-02T12:44:21Z
dc.title.none.fl_str_mv A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
Sinopsis global y aproximación a la filogenia molecular del género Parablechnum C. Presl (Blechnaceae, Polypodiopsida)
title A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
spellingShingle A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
Molino De Miguel, Sonia
582.37/.39(043.2)
Helechos
Ferns
Botánica (Biología)
2417.03 Botánica General
title_short A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
title_full A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
title_fullStr A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
title_full_unstemmed A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
title_sort A global synopsis and molecular phylogenetic approach of the genus Parablechnum C.Presl (Blechnaceae, Polypodiopsida)
dc.creator.none.fl_str_mv Molino De Miguel, Sonia
author Molino De Miguel, Sonia
author_facet Molino De Miguel, Sonia
author_role author
dc.contributor.none.fl_str_mv Medina Bujalance, Rafael
Testo, Weston
Vicent Fernández, María
Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 582.37/.39(043.2)
Helechos
Ferns
Botánica (Biología)
2417.03 Botánica General
topic 582.37/.39(043.2)
Helechos
Ferns
Botánica (Biología)
2417.03 Botánica General
description The family Blechnaceae is a lineage that includes about 280 species in 25 genera, and together with the Onocleaceae is the most recent family of ferns. Within this family, Parablechnum is the most diverse genus, with about 65 species. The distribution of this genus reflects very well the distribution of the most diverse areas of the family: Central and South America, the Austropacific and some representatives in southern Africa, Madagascar and the Mascarene archipelago.The distribution of this genus reflects a disjunction that could easily be explained by Gondwanan vicariance, but the available dating indicates that the genus underwent a rapid radiation after the separation from Gondwana, which would imply that its distribution is due to long-distance dispersal (LDD). In addition, the intra-continental dispersal of the genus together with other problems such as poor representation in herbaria has made the taxonomy of Parablechnum unclear to date.In this context, a revision of the systematics of the genus has been proposed using herbarium material and some field collections to elucidate the taxonomy and evolutionary history of the genus.For this purpose, 3,738 specimens from 52 herbariums of all the species of Parablechnum conceived to date have been examined physically and digitally. Where possible, the anatomy of the fertile pinnae and epidermis was studied, and spores and sporangia were observed by light and electron microscopy. In addition, DNA was extracted from 127 individuals and five chloroplastic markers were sequenced for maximum likelihood phylogenetic trees and Bayesian inference. In addition, a dating have been carried out. For this purpose, 582 sequences were used, 469 of which were newly created in this work...
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-11-07
2022
2022-11-07
dc.type.none.fl_str_mv doctoral thesis
http://purl.org/coar/resource_type/c_db06
dc.type.openaire.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/3935
url https://hdl.handle.net/20.500.14352/3935
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Complutense de Madrid
publisher.none.fl_str_mv Universidad Complutense de Madrid
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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