Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)

Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)

The genus Desmodium is represented in Santa Catarina State, Brazil, by 13 species, all with lomentaceous fruits. Shape, size and isthmus margin of loments vary, while the surface is glabrous, or covered by trichomes of different types. Morphological diversity of trichomes becomes particularly releva...

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Detalles Bibliográficos
Autores principales: Freitas, Daiane M., Reis, Ademir, da Costa Bortoluzzi, Roseli L., Santos, Marisa
Formato: Online
Idioma:eng
Publicado: Universidad de Costa Rica 2014
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/13012
id RBT13012
record_format ojs
institution Universidad de Costa Rica
collection Revista de Biología Tropical
language eng
format Online
author Freitas, Daiane M.
Reis, Ademir
da Costa Bortoluzzi, Roseli L.
Santos, Marisa
spellingShingle Freitas, Daiane M.
Reis, Ademir
da Costa Bortoluzzi, Roseli L.
Santos, Marisa
Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)
author_facet Freitas, Daiane M.
Reis, Ademir
da Costa Bortoluzzi, Roseli L.
Santos, Marisa
author_sort Freitas, Daiane M.
description The genus Desmodium is represented in Santa Catarina State, Brazil, by 13 species, all with lomentaceous fruits. Shape, size and isthmus margin of loments vary, while the surface is glabrous, or covered by trichomes of different types. Morphological diversity of trichomes becomes particularly relevant to taxonomic description. The trichome types present on the surface of Desmodium fruits provide data for the identification and classification of species in the State. To assess this, three fruits of each species were collected and deposited at two herbaria, HBR and FLOR, in Santa Catarina, Brazil. Some rehydrated samples were examined using light microscopy (LM); and some sections were exposed to the following histochemical reagents: Sudan III for oils and Thionine for mucilage. The structural aspects of trichomes can be classified into uni- or multicellular and may still be simple, i.e., nonglandular or glandular. Using scanning electron microscopy (SEM), five types of trichomes were identified and analyzed among the Desmodium species studied: uncinate, uniseriate, globose multicellular, globose unicellular and subulate. Characteristics, such as loment margin and article form, glabrescent or pillous indument, trichome type, with or without papillous epidermal cells and epicuticular striations, showed relevant diagnostic value. An identification key was developed for Desmodium species from Santa Catarina State, Brazil, based on macro and micromorphological characters of the fruit. Daiane M. Freitas1*, Ademir Reis2, Roseli L. da Costa Bortoluzzi3 and Marisa Santos4Departamento de Botânica, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis 88040-900, Brasil and Herbário Barbosa Rodrigues (HBR), Av. Coronel Marcos Konder 800, Itajaí 88301-302, Santa Catarina, Brasil; martinsf.daiane@gmail.comHerbário Barbosa Rodrigues (HBR), Av. Coronel Marcos Konder 800, Itajaí 88301-302, Santa Catarina, Brasil; ademir.reis.ufsc@gmail.comCentro de Ciências Agrárias, Departamento de Engenharia Florestal, Universidade do Estado de Santa Catarina (CAV - UDESC), Lages 88520-000, Santa Catarina, Brasil; rosebortoluzzi@gmail.comDepartamento de Botânica, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis 88040-900, Brasil; marisa.santos@ufsc.br*           Correspondence
title Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)
title_short Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)
title_full Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)
title_fullStr Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)
title_full_unstemmed Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae)
title_sort morphological and micromorphological characteristics of desmodium fruits (leguminosae: papilionoideae)
title_alt Características morfológicas y micromorfológicos de frutos Desmodium (Leguminosae: Papilionoideae)
publisher Universidad de Costa Rica
publishDate 2014
url https://revistas.ucr.ac.cr/index.php/rbt/article/view/13012
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spelling RBT130122022-06-09T17:30:45Z Características morfológicas y micromorfológicos de frutos Desmodium (Leguminosae: Papilionoideae) Morphological and micromorphological characteristics of Desmodium fruits (Leguminosae: Papilionoideae) Freitas, Daiane M. Reis, Ademir da Costa Bortoluzzi, Roseli L. Santos, Marisa dispersión clave de identificación microscopía electrónica de barrido (SEM) estructuras secretoras taxonomía tricomas dispersion identification key scanning electron microscopy (SEM) secretory structures taxonomy trichomes El género Desmodium está representado en Santa Catarina, Brasil, por 13 especies, todas con frutos lomentaceos. Los lomentos han tenido variación en forma, tamaño y características del margen del istmo, y la superficie es glabra o cubierta por tricomas de diferentes tipos. La diversidad morfológica de los tricomas se vuelve particularmente relevante para la descripción taxonómica. Los tipos de tricomas presentes en la superficie de los frutos Desmodium, proporcionan datos para la identificación y clasificación de las especies en el Estado de Santa Catarina, Brasil. Tres frutos de cada especie fueron recogidos y depositados en el Herbario (HBR y FLOR, Santa Catarina, Brasil). Algunas muestras fueron rehidratadas y examinadas usando microscopía de luz (LM), las secciones fueron expuestas a los siguientes reactivos histoquímicos: Sudan III para los aceites y Tionina para mucílago. Los aspectos estructurales de los tricomas se pueden clasificar en uni o multicelulares y pueden todavía ser simples, es decir, no glandular o glandular. Por medio del uso de la microscopía electrónica de barrido (SEM), cinco tipos de tricomas se han identificado y analizado entre las especies de Desmodium estudiadas: uncinado, uniseriado, globoso multicelular, globoso unicelular y subulado. Características como el margen del lomento y la forma del artículo, indumento glabrescente o piloso, tipo de tricomas con o sin células epidérmicas papilosas, y estrías epicuticulares mostraron valor de diagnóstico relevante. La clave de identificación fue desarrollada para especies de Desmodium del Estado de Santa Catarina, Brasil, basado en caracteres macro y micromorfológicos del fruto.  The genus Desmodium is represented in Santa Catarina State, Brazil, by 13 species, all with lomentaceous fruits. Shape, size and isthmus margin of loments vary, while the surface is glabrous, or covered by trichomes of different types. Morphological diversity of trichomes becomes particularly relevant to taxonomic description. The trichome types present on the surface of Desmodium fruits provide data for the identification and classification of species in the State. To assess this, three fruits of each species were collected and deposited at two herbaria, HBR and FLOR, in Santa Catarina, Brazil. Some rehydrated samples were examined using light microscopy (LM); and some sections were exposed to the following histochemical reagents: Sudan III for oils and Thionine for mucilage. The structural aspects of trichomes can be classified into uni- or multicellular and may still be simple, i.e., nonglandular or glandular. Using scanning electron microscopy (SEM), five types of trichomes were identified and analyzed among the Desmodium species studied: uncinate, uniseriate, globose multicellular, globose unicellular and subulate. Characteristics, such as loment margin and article form, glabrescent or pillous indument, trichome type, with or without papillous epidermal cells and epicuticular striations, showed relevant diagnostic value. An identification key was developed for Desmodium species from Santa Catarina State, Brazil, based on macro and micromorphological characters of the fruit. Daiane M. Freitas1*, Ademir Reis2, Roseli L. da Costa Bortoluzzi3 and Marisa Santos4Departamento de Botânica, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis 88040-900, Brasil and Herbário Barbosa Rodrigues (HBR), Av. Coronel Marcos Konder 800, Itajaí 88301-302, Santa Catarina, Brasil; martinsf.daiane@gmail.comHerbário Barbosa Rodrigues (HBR), Av. Coronel Marcos Konder 800, Itajaí 88301-302, Santa Catarina, Brasil; ademir.reis.ufsc@gmail.comCentro de Ciências Agrárias, Departamento de Engenharia Florestal, Universidade do Estado de Santa Catarina (CAV - UDESC), Lages 88520-000, Santa Catarina, Brasil; rosebortoluzzi@gmail.comDepartamento de Botânica, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis 88040-900, Brasil; marisa.santos@ufsc.br*           Correspondence Universidad de Costa Rica 2014-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/13012 10.15517/rbt.v62i4.13012 Revista de Biología Tropical; Vol. 62 No. 4 (2014): Volume 62 – Regular number 4 – December 2014; 1597–1608 Revista de Biología Tropical; Vol. 62 Núm. 4 (2014): Volumen 62 – Número regular 4 – Diciembre 2014; 1597–1608 Revista Biología Tropical; Vol. 62 N.º 4 (2014): Volume 62 – Regular number 4 – December 2014; 1597–1608 2215-2075 0034-7744 10.15517/rbt.v62i4 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/13012/15516 https://revistas.ucr.ac.cr/index.php/rbt/article/view/13012/15517 Copyright (c) 2014 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0

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