Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)

Detalhes bibliográficos
Autor(a) principal: Pedroso-de-Moraes,Cristiano
Data de Publicação: 2012
Outros Autores: Souza-Leal,Thiago de, Brescansin,Rafael L., Pettini-Benelli,Adarilda, Sajo,Maria das Graças
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200015
Resumo: Considering that the root structure of the Brazilian genera belonging to the Catasetinae subtribe is poorly known, we describe the roots of twelve representatives from this subtribe. For anatomical analysis, the roots were fixed in FAA 50, preserved in ethanol 70% and sectioned at its medium region using razor blades. The sections were stained with 0.05% astra blue and safranin and mounted in glycerin. For the identification of starch we used Lugol's solution; for lignin, floroglucin chloridric; for lipids, Sudan III, and for flavanoids, potassium hydroxide. The relevant aspects were registered using a digital camera joined with an Olympus microspope (BX51 model). The structural similarities of all roots support the placement of the subtribe Catasetinae into the monophyletic tribe Cymbidieae. Some root features are restricted to one or two taxa and can be useful in the systematics of the subtribe. For example, the occurrence of flavonoidic crystals characterizes the genera Catasetum and Cychnodes, and the number of the velamen layers and the shape of the epivelamen cells are useful to confirm the taxonomic position of Clowesia amazonica. The presence of velamen and flavonoidic crystals was interpreted as an adaptation to the epiphytic habit.
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spelling Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)EpiphytismmorphoanatomyorchidsystematicConsidering that the root structure of the Brazilian genera belonging to the Catasetinae subtribe is poorly known, we describe the roots of twelve representatives from this subtribe. For anatomical analysis, the roots were fixed in FAA 50, preserved in ethanol 70% and sectioned at its medium region using razor blades. The sections were stained with 0.05% astra blue and safranin and mounted in glycerin. For the identification of starch we used Lugol's solution; for lignin, floroglucin chloridric; for lipids, Sudan III, and for flavanoids, potassium hydroxide. The relevant aspects were registered using a digital camera joined with an Olympus microspope (BX51 model). The structural similarities of all roots support the placement of the subtribe Catasetinae into the monophyletic tribe Cymbidieae. Some root features are restricted to one or two taxa and can be useful in the systematics of the subtribe. For example, the occurrence of flavonoidic crystals characterizes the genera Catasetum and Cychnodes, and the number of the velamen layers and the shape of the epivelamen cells are useful to confirm the taxonomic position of Clowesia amazonica. The presence of velamen and flavonoidic crystals was interpreted as an adaptation to the epiphytic habit.Academia Brasileira de Ciências2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200015Anais da Academia Brasileira de Ciências v.84 n.2 2012reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/S0001-37652012005000028info:eu-repo/semantics/openAccessPedroso-de-Moraes,CristianoSouza-Leal,Thiago deBrescansin,Rafael L.Pettini-Benelli,AdarildaSajo,Maria das Graçaseng2012-05-28T00:00:00Zoai:scielo:S0001-37652012000200015Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2012-05-28T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
title Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
spellingShingle Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
Pedroso-de-Moraes,Cristiano
Epiphytism
morphoanatomy
orchid
systematic
title_short Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
title_full Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
title_fullStr Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
title_full_unstemmed Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
title_sort Radicular anatomy of twelve representatives of the Catasetinae subtribe (Orchidaceae: Cymbidieae)
author Pedroso-de-Moraes,Cristiano
author_facet Pedroso-de-Moraes,Cristiano
Souza-Leal,Thiago de
Brescansin,Rafael L.
Pettini-Benelli,Adarilda
Sajo,Maria das Graças
author_role author
author2 Souza-Leal,Thiago de
Brescansin,Rafael L.
Pettini-Benelli,Adarilda
Sajo,Maria das Graças
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Pedroso-de-Moraes,Cristiano
Souza-Leal,Thiago de
Brescansin,Rafael L.
Pettini-Benelli,Adarilda
Sajo,Maria das Graças
dc.subject.por.fl_str_mv Epiphytism
morphoanatomy
orchid
systematic
topic Epiphytism
morphoanatomy
orchid
systematic
description Considering that the root structure of the Brazilian genera belonging to the Catasetinae subtribe is poorly known, we describe the roots of twelve representatives from this subtribe. For anatomical analysis, the roots were fixed in FAA 50, preserved in ethanol 70% and sectioned at its medium region using razor blades. The sections were stained with 0.05% astra blue and safranin and mounted in glycerin. For the identification of starch we used Lugol's solution; for lignin, floroglucin chloridric; for lipids, Sudan III, and for flavanoids, potassium hydroxide. The relevant aspects were registered using a digital camera joined with an Olympus microspope (BX51 model). The structural similarities of all roots support the placement of the subtribe Catasetinae into the monophyletic tribe Cymbidieae. Some root features are restricted to one or two taxa and can be useful in the systematics of the subtribe. For example, the occurrence of flavonoidic crystals characterizes the genera Catasetum and Cychnodes, and the number of the velamen layers and the shape of the epivelamen cells are useful to confirm the taxonomic position of Clowesia amazonica. The presence of velamen and flavonoidic crystals was interpreted as an adaptation to the epiphytic habit.
publishDate 2012
dc.date.none.fl_str_mv 2012-06-01
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=S0001-37652012000200015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0001-37652012005000028
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 Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.84 n.2 2012
reponame:Anais da Academia Brasileira de Ciências (Online)
instname:Academia Brasileira de Ciências (ABC)
instacron:ABC
instname_str Academia Brasileira de Ciências (ABC)
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institution ABC
reponame_str Anais da Academia Brasileira de Ciências (Online)
collection Anais da Academia Brasileira de Ciências (Online)
repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
repository.mail.fl_str_mv ||aabc@abc.org.br
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