Morphological and genomic characterization of Rhynchospora tenuis complex (Cyperaceae) and its taxonomic implications
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
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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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 |
_version_ |
1752128670780096512 |