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Data de Publicação: | 2006 |
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Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Biotemas (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/biotemas/article/view/21094 |
Resumo: | Leaf anatomy of Odontonema strictum (Nees) O. Kuntze (Acanthaceae). This study investigated the leaf anatomy of Odontonema strictum (Nees) O. Kuntze (Acanthaceae), with emphasis on cystoliths, which are veryabundant in this species. Leaves fully expanded from five mature indivi- duals were collected in the teaching garden of the “Setor de Ciências Biológicas” (UFPR) and fixed in FAA 70. The cystoliths were located in theepidermal cells of the adaxial face (litocysths) and also among the collenchyma cells of the midrib and petiole. The cystoliths were cylindrical, long, with several small projections. They sometimes occurred in pairs and varied greatly in size, with an average length of 163.4±68.8 ?m and a density of 23±9.97 cystoliths.mm-2 (n=10). The foliar lamina presented a uniseriate epidermis, dorsiventral mesophyll, and palisade parenchyma, which was continuous along the lamina. In the midrib, arc-shaped vascular veins were surrounded by fundamental parenchyma. Glandular trichomes occurred on both faces of the leaf, while non-glandular trichomes and diacytic stomata were present only on the abaxial face. The great number and size of the cystoliths observed could be related to defenses against herbivory and to mechanisms of removal of excess calcium absorbed from the soil. |
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.Anatomia foliar de Odontonema strictum (Nees) O. Kuntze (Acanthaceae)Leaf anatomy of Odontonema strictum (Nees) O. Kuntze (Acanthaceae). This study investigated the leaf anatomy of Odontonema strictum (Nees) O. Kuntze (Acanthaceae), with emphasis on cystoliths, which are veryabundant in this species. Leaves fully expanded from five mature indivi- duals were collected in the teaching garden of the “Setor de Ciências Biológicas” (UFPR) and fixed in FAA 70. The cystoliths were located in theepidermal cells of the adaxial face (litocysths) and also among the collenchyma cells of the midrib and petiole. The cystoliths were cylindrical, long, with several small projections. They sometimes occurred in pairs and varied greatly in size, with an average length of 163.4±68.8 ?m and a density of 23±9.97 cystoliths.mm-2 (n=10). The foliar lamina presented a uniseriate epidermis, dorsiventral mesophyll, and palisade parenchyma, which was continuous along the lamina. In the midrib, arc-shaped vascular veins were surrounded by fundamental parenchyma. Glandular trichomes occurred on both faces of the leaf, while non-glandular trichomes and diacytic stomata were present only on the abaxial face. The great number and size of the cystoliths observed could be related to defenses against herbivory and to mechanisms of removal of excess calcium absorbed from the soil.Este trabalho investigou a anatomia da folha de Odontonema strictum (Nees) O. Kuntze (família Acanthaceae)com ênfase na descrição dos cistólitos, que são muito abundantes nesta espécie. Folhas totalmente expandidas de cinco indivíduos adultos foram coletadas no Jardim Didático do Setor de Ciências Biológicas (UFPR) e fixadas em FAA 70. Os cistólitos localizam-se nas células epidérmicas diferenciadas da face adaxial (litocistos) e são cilíndricos, alongados, com inúmeras pequenas projeções, podendo ocorrer aos pares, em diversos tamanhos, com comprimento médio de 163,4 ± 68,8?m e densidade de 23 ± 9,97 cistólitos.mm-2 (n=10). Os cistólitos, além de ocorrerem nas células epidérmicas, são encontrados também entre as células colenquimáticas da nervura central e do pecíolo. A lâmina foliar apresenta epiderme uniestratificada, mesofilo dorsiventral, com parênquima paliçádico con tínuo ao longo da lâmina. Os feixes vasculares estão distribuídos em forma de arco e envoltos por parênquima fundamental. Tricomas glandulares ocorrem em ambas as faces, enquanto que os tricomas tectores pluricelulares e estômatos diacíticos estão presentes apenas na face abaxial. O grande número e tamanho dos cistólitos encontrados podem estar relacionados com defesas contra a herbivoria e com os mecanismos de retirada de excesso de cálcio absorvido do solo.Universidade Federal de Santa Catarina2006-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/21094Biotemas; v. 19 n. 4 (2006); 23-312175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/biotemas/article/view/21094/19064Copyright (c) 2006 Letícia Larcher, Maria Regina T. Boegerhttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessLarcher, LetíciaT. Boeger, Maria Regina2022-11-21T11:47:47Zoai:periodicos.ufsc.br:article/21094Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2022-11-21T11:47:47Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
. Anatomia foliar de Odontonema strictum (Nees) O. Kuntze (Acanthaceae) |
title |
. |
spellingShingle |
. Larcher, Letícia |
title_short |
. |
title_full |
. |
title_fullStr |
. |
title_full_unstemmed |
. |
title_sort |
. |
author |
Larcher, Letícia |
author_facet |
Larcher, Letícia T. Boeger, Maria Regina |
author_role |
author |
author2 |
T. Boeger, Maria Regina |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Larcher, Letícia T. Boeger, Maria Regina |
description |
Leaf anatomy of Odontonema strictum (Nees) O. Kuntze (Acanthaceae). This study investigated the leaf anatomy of Odontonema strictum (Nees) O. Kuntze (Acanthaceae), with emphasis on cystoliths, which are veryabundant in this species. Leaves fully expanded from five mature indivi- duals were collected in the teaching garden of the “Setor de Ciências Biológicas” (UFPR) and fixed in FAA 70. The cystoliths were located in theepidermal cells of the adaxial face (litocysths) and also among the collenchyma cells of the midrib and petiole. The cystoliths were cylindrical, long, with several small projections. They sometimes occurred in pairs and varied greatly in size, with an average length of 163.4±68.8 ?m and a density of 23±9.97 cystoliths.mm-2 (n=10). The foliar lamina presented a uniseriate epidermis, dorsiventral mesophyll, and palisade parenchyma, which was continuous along the lamina. In the midrib, arc-shaped vascular veins were surrounded by fundamental parenchyma. Glandular trichomes occurred on both faces of the leaf, while non-glandular trichomes and diacytic stomata were present only on the abaxial face. The great number and size of the cystoliths observed could be related to defenses against herbivory and to mechanisms of removal of excess calcium absorbed from the soil. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/21094 |
url |
https://periodicos.ufsc.br/index.php/biotemas/article/view/21094 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/21094/19064 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2006 Letícia Larcher, Maria Regina T. Boeger http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2006 Letícia Larcher, Maria Regina T. Boeger http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
dc.source.none.fl_str_mv |
Biotemas; v. 19 n. 4 (2006); 23-31 2175-7925 0103-1643 reponame:Biotemas (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Biotemas (Online) |
collection |
Biotemas (Online) |
repository.name.fl_str_mv |
Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
||carlospinto@ccb.ufsc.br |
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1799940550578667520 |