Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications

Detalhes bibliográficos
Autor(a) principal: Michelan,Vanessa Silva
Data de Publicação: 2012
Outros Autores: Trevisan,Rafael, Silva,Carlos Roberto Maximiano da, Souza,Rogério Fernandes de, Luceño,Modesto, Vanzela,André Luís Laforga
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Rodriguésia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602012000400003
Resumo: Species of Rhynchospora sect. Tenues are morphologically very similar. Rhynchospora tenuis complex is the most problematic species complex in this group and it concentrates entities of difficult delimitation, as is the case of R. tenuis, R. tenuis subsp. austro-brasiliensis and R. enmanuelis. Samples of these three taxonomic entities, besides R. junciformis and R. breviuscula (Dichromena), were analyzed in a comparative way using morphologic, cytogenetic and molecular tools. Despite of high morphological similarity between these taxa, R. tenuis was separated from R. tenuis subsp. austro-brasiliensis and R. enmanuelis according to chromosome numbers (2n = 4 and 2n = 18) and ISSR markers. The combined analysis of shape and size of achenes and stylopodium, number of spikelets, cytogenetic features and molecular markers suggest a clear proximity among Rhynchospora junciformis, R. tenuis subsp. austro-brasiliensis and R. enmanuelis, in relation to R. tenuis. These data indicate the need for a new taxonomic review of R. sect. Tenues, mainly to solve the status and nomenclatural situation of R. tenuis subsp. austro-brasiliensis and R. enmanuelis.
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spelling Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implicationscytotaxonomydysploidyISSRholocentric chromosomesPoalesSpecies of Rhynchospora sect. Tenues are morphologically very similar. Rhynchospora tenuis complex is the most problematic species complex in this group and it concentrates entities of difficult delimitation, as is the case of R. tenuis, R. tenuis subsp. austro-brasiliensis and R. enmanuelis. Samples of these three taxonomic entities, besides R. junciformis and R. breviuscula (Dichromena), were analyzed in a comparative way using morphologic, cytogenetic and molecular tools. Despite of high morphological similarity between these taxa, R. tenuis was separated from R. tenuis subsp. austro-brasiliensis and R. enmanuelis according to chromosome numbers (2n = 4 and 2n = 18) and ISSR markers. The combined analysis of shape and size of achenes and stylopodium, number of spikelets, cytogenetic features and molecular markers suggest a clear proximity among Rhynchospora junciformis, R. tenuis subsp. austro-brasiliensis and R. enmanuelis, in relation to R. tenuis. These data indicate the need for a new taxonomic review of R. sect. Tenues, mainly to solve the status and nomenclatural situation of R. tenuis subsp. austro-brasiliensis and R. enmanuelis.Instituto de Pesquisas Jardim Botânico do Rio de Janeiro2012-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602012000400003Rodriguésia v.63 n.4 2012reponame:Rodriguésia (Online)instname:Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)instacron:JBRJ10.1590/S2175-78602012000400003info:eu-repo/semantics/openAccessMichelan,Vanessa SilvaTrevisan,RafaelSilva,Carlos Roberto Maximiano daSouza,Rogério Fernandes deLuceño,ModestoVanzela,André Luís Laforgaeng2013-03-15T00:00:00Zoai:scielo:S2175-78602012000400003Revistahttp://rodriguesia.jbrj.gov.br/https://old.scielo.br/oai/scielo-oai.phprodriguesia@jbrj.gov.br2175-78600370-6583opendoar:2013-03-15T00:00Rodriguésia (Online) - Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)false
dc.title.none.fl_str_mv Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
title Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
spellingShingle Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
Michelan,Vanessa Silva
cytotaxonomy
dysploidy
ISSR
holocentric chromosomes
Poales
title_short Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
title_full Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
title_fullStr Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
title_full_unstemmed Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
title_sort Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
author Michelan,Vanessa Silva
author_facet Michelan,Vanessa Silva
Trevisan,Rafael
Silva,Carlos Roberto Maximiano da
Souza,Rogério Fernandes de
Luceño,Modesto
Vanzela,André Luís Laforga
author_role author
author2 Trevisan,Rafael
Silva,Carlos Roberto Maximiano da
Souza,Rogério Fernandes de
Luceño,Modesto
Vanzela,André Luís Laforga
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Michelan,Vanessa Silva
Trevisan,Rafael
Silva,Carlos Roberto Maximiano da
Souza,Rogério Fernandes de
Luceño,Modesto
Vanzela,André Luís Laforga
dc.subject.por.fl_str_mv cytotaxonomy
dysploidy
ISSR
holocentric chromosomes
Poales
topic cytotaxonomy
dysploidy
ISSR
holocentric chromosomes
Poales
description Species of Rhynchospora sect. Tenues are morphologically very similar. Rhynchospora tenuis complex is the most problematic species complex in this group and it concentrates entities of difficult delimitation, as is the case of R. tenuis, R. tenuis subsp. austro-brasiliensis and R. enmanuelis. Samples of these three taxonomic entities, besides R. junciformis and R. breviuscula (Dichromena), were analyzed in a comparative way using morphologic, cytogenetic and molecular tools. Despite of high morphological similarity between these taxa, R. tenuis was separated from R. tenuis subsp. austro-brasiliensis and R. enmanuelis according to chromosome numbers (2n = 4 and 2n = 18) and ISSR markers. The combined analysis of shape and size of achenes and stylopodium, number of spikelets, cytogenetic features and molecular markers suggest a clear proximity among Rhynchospora junciformis, R. tenuis subsp. austro-brasiliensis and R. enmanuelis, in relation to R. tenuis. These data indicate the need for a new taxonomic review of R. sect. Tenues, mainly to solve the status and nomenclatural situation of R. tenuis subsp. austro-brasiliensis and R. enmanuelis.
publishDate 2012
dc.date.none.fl_str_mv 2012-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602012000400003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602012000400003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S2175-78602012000400003
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
publisher.none.fl_str_mv Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
dc.source.none.fl_str_mv Rodriguésia v.63 n.4 2012
reponame:Rodriguésia (Online)
instname:Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)
instacron:JBRJ
instname_str Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)
instacron_str JBRJ
institution JBRJ
reponame_str Rodriguésia (Online)
collection Rodriguésia (Online)
repository.name.fl_str_mv Rodriguésia (Online) - Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)
repository.mail.fl_str_mv rodriguesia@jbrj.gov.br
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