Systematics of Drosera sect. Drosera s.s. (Droseraceae)
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da USP |
Texto Completo: | http://www.teses.usp.br/teses/disponiveis/41/41132/tde-09082017-094303/ |
Resumo: | Drosera is a carnivorous plant genus belonging to the Droseraceae and comprising around 250 species distributed worldwide. A great number of new species and combinations have been published for Brazil and the Neotropics in the past decades; however, a comprehensive taxonomic work dealing with these species was still lacking. Furthermore, previous phylogenetic works on the genus focused on understanding the relationships between the morphological and geographical groups, revealing that all proposed infrageneric classifications were incongruent with the phylogeny and that the Neotropical species belonging to D. sect. Drosera are divided into two lineages mostly defined by chromosome number. In the present work, a comprehensive taxonomic treatment for the Brazilian Drosera is presented, together with a revision of the previously poorly known Andean species, descriptions of new species and a molecular phylogeny focusing on the two Neotropical lineages of D. sect. Drosera. Although the phylogenetic analyses here performed did not present conclusive results regarding relationships at the species level, they shed light on the importance of some morphological traits for the classification of these species and back up the species circumscriptions adopted in recent works. Combined with data covering all the other lineages in a global phylogeny of Drosera, these results will be of crucial importance for the proposition of a new infrageneric classification of the genus |
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Systematics of Drosera sect. Drosera s.s. (Droseraceae)Sistemática de Drosera sect. Drosera s.s. (Droseraceae)DiversidadeDiversityDroseraceaeDroseraceaeSistemáticaSystematicsDrosera is a carnivorous plant genus belonging to the Droseraceae and comprising around 250 species distributed worldwide. A great number of new species and combinations have been published for Brazil and the Neotropics in the past decades; however, a comprehensive taxonomic work dealing with these species was still lacking. Furthermore, previous phylogenetic works on the genus focused on understanding the relationships between the morphological and geographical groups, revealing that all proposed infrageneric classifications were incongruent with the phylogeny and that the Neotropical species belonging to D. sect. Drosera are divided into two lineages mostly defined by chromosome number. In the present work, a comprehensive taxonomic treatment for the Brazilian Drosera is presented, together with a revision of the previously poorly known Andean species, descriptions of new species and a molecular phylogeny focusing on the two Neotropical lineages of D. sect. Drosera. Although the phylogenetic analyses here performed did not present conclusive results regarding relationships at the species level, they shed light on the importance of some morphological traits for the classification of these species and back up the species circumscriptions adopted in recent works. Combined with data covering all the other lineages in a global phylogeny of Drosera, these results will be of crucial importance for the proposition of a new infrageneric classification of the genusDrosera é um gênero de plantas canívoras pertencente às Droseraceae e compreende cerca de 250 espécies distribuídas no mundo todo. Um grande número de novas espécies e combinações foi publicado para o Brasil e os Neotrópicos nas últimas décadas, no entanto, ainda carecia-se de um compreensivo trabalho taxonômico lidando com tais espécies. Além disso, trabalhos filogenéticos anteriores focaram no entendimento das relações entre os grupos definidos por morfologia e distribuição geográfica, revelando que todas as classificações infragenéricas já propostas eram incongruentes com a filogenia e que as espécies Neotropicais pertencentes a D. sect. Drosera se dividiam em duas linhagens definidas, principalmente, por número cromossômico. No presente trabalho, um tratamento taxonômico compreensivo tratando das espécies brasileiras é apresentado, junto com uma revisão taxonômica das antes pouco conhecidas espécies andinas, descrições de novas espécies e uma filogenia molecular focando nas duas linhagens Neotropicais de D. sect. Drosera. Embora os resultados das análises filogenéticas não tenham sido conclusivos para o estabelecimento de relações ao nível das espécies, eles apontam para importância de alguns caracteres morfológicos para a classificação dessas espécies e apoiam as circunscrições adotadas em trabalhos recentes. Combinados com dados cobrindo as demais linhagens numa filogenia global de Drosera, esses resultados serão de crucial importância para a proposição de uma nova classificação infragenérica para o gêneroBiblioteca Digitais de Teses e Dissertações da USPFlieschmann, Andreas StefanSano, Paulo TakeoGonella, Paulo Minatel2017-05-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttp://www.teses.usp.br/teses/disponiveis/41/41132/tde-09082017-094303/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2019-08-09T06:00:24Zoai:teses.usp.br:tde-09082017-094303Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212019-08-09T06:00:24Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) Sistemática de Drosera sect. Drosera s.s. (Droseraceae) |
title |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) |
spellingShingle |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) Gonella, Paulo Minatel Diversidade Diversity Droseraceae Droseraceae Sistemática Systematics |
title_short |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) |
title_full |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) |
title_fullStr |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) |
title_full_unstemmed |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) |
title_sort |
Systematics of Drosera sect. Drosera s.s. (Droseraceae) |
author |
Gonella, Paulo Minatel |
author_facet |
Gonella, Paulo Minatel |
author_role |
author |
dc.contributor.none.fl_str_mv |
Flieschmann, Andreas Stefan Sano, Paulo Takeo |
dc.contributor.author.fl_str_mv |
Gonella, Paulo Minatel |
dc.subject.por.fl_str_mv |
Diversidade Diversity Droseraceae Droseraceae Sistemática Systematics |
topic |
Diversidade Diversity Droseraceae Droseraceae Sistemática Systematics |
description |
Drosera is a carnivorous plant genus belonging to the Droseraceae and comprising around 250 species distributed worldwide. A great number of new species and combinations have been published for Brazil and the Neotropics in the past decades; however, a comprehensive taxonomic work dealing with these species was still lacking. Furthermore, previous phylogenetic works on the genus focused on understanding the relationships between the morphological and geographical groups, revealing that all proposed infrageneric classifications were incongruent with the phylogeny and that the Neotropical species belonging to D. sect. Drosera are divided into two lineages mostly defined by chromosome number. In the present work, a comprehensive taxonomic treatment for the Brazilian Drosera is presented, together with a revision of the previously poorly known Andean species, descriptions of new species and a molecular phylogeny focusing on the two Neotropical lineages of D. sect. Drosera. Although the phylogenetic analyses here performed did not present conclusive results regarding relationships at the species level, they shed light on the importance of some morphological traits for the classification of these species and back up the species circumscriptions adopted in recent works. Combined with data covering all the other lineages in a global phylogeny of Drosera, these results will be of crucial importance for the proposition of a new infrageneric classification of the genus |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-19 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.teses.usp.br/teses/disponiveis/41/41132/tde-09082017-094303/ |
url |
http://www.teses.usp.br/teses/disponiveis/41/41132/tde-09082017-094303/ |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
|
dc.rights.driver.fl_str_mv |
Liberar o conteúdo para acesso público. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Liberar o conteúdo para acesso público. |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
|
dc.publisher.none.fl_str_mv |
Biblioteca Digitais de Teses e Dissertações da USP |
publisher.none.fl_str_mv |
Biblioteca Digitais de Teses e Dissertações da USP |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da USP instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Biblioteca Digital de Teses e Dissertações da USP |
collection |
Biblioteca Digital de Teses e Dissertações da USP |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br |
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1809090552085348352 |