Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina)

The aim of this study was to deepen the knowledge of the cladodes anatomy of nine species of Opuntia that grow in the province of Buenos Aires, Argentina. Fresh and herbarium samples were prepared according to usual methods for light microscope. Histochemical techniques were performed to identify st...

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Autores principales: Perrotta, Vanesa G., Arambarri, Ana M.
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Sociedad Argentina de Botánica 2018
Materias:
Buenos Aires province
Opuntia
segment of stems
tissues.
provincia de Buenos Aires
segmentos del tallo
tejidos.
Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/21310
Aporte de:
Boletín de la Sociedad Argentina de Botánica de Universidad Nacional de Córdoba
id I10-R325-article-21310
record_format ojs
spelling I10-R325-article-213102019-12-14T13:46:21Z Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina) Anatomía de los cladodios de Opuntia (Cactaceae) de la provincia de Buenos Aires, Argentina Perrotta, Vanesa G. Arambarri, Ana M. Buenos Aires province Opuntia segment of stems tissues. Opuntia provincia de Buenos Aires segmentos del tallo tejidos. The aim of this study was to deepen the knowledge of the cladodes anatomy of nine species of Opuntia that grow in the province of Buenos Aires, Argentina. Fresh and herbarium samples were prepared according to usual methods for light microscope. Histochemical techniques were performed to identify starch, mucilage and oxalate salts. The main traits found were: epidermis smooth and uniseriate, covered by a thin cuticle and epicuticular waxes; large (range 36-57 µm length) stomata in low density (range 21-27/ mm2), located at level respect to the rest of epidermal cells with a deep substomatal chamber; a multiseriate hypodermis with one crystal layer; the cortex with external chlorenchyma and internal hydrenchyma. The eustele presents different size of vascular bundles; in some species the large ones have a secretory duct adjacent to the phloem. Some species showed wide-band tracheids and a few presented fibres in their vascular bundles. Some characters (presence of fibres and ducts) may be a useful tool for plant identification. However, many open questions remain to be investigated such as the correlation of the environment factors with hypodermis, calcium oxalate crystals, and wide-band tracheids. Anatomía de los cladodios de Opuntia (Cactaceae) de la provincia de Buenos Aires, Argentina. El objetivo de este trabajo fue profundizar el conocimiento de la anatomía de los cladodios de nueve especies de Opuntia que crecen en la provincia de Buenos Aires, Argentina. Se hicieron preparaciones con material fresco y ejemplares de herbario siguiendo métodos habituales para microscopía óptica. Se usaron técnicas histoquímicas para identificar almidón, mucílagos y sales de oxalato. Las principales características halladas fueron: epidermis lisa y uniseriada, cutícula delgada y ceras epicuticulares; estomas grandes (entre 36-57 µm long) en baja densidad (entre 21-27/ mm2), ubicados a nivel con respecto a las restantes células epidérmicas y con una profunda cámara subestomática; hipodermis multiseriada con capa cristalífera; la corteza con clorénquima externo e hidrénquima interno. La eustela presenta haces vasculares de diferente tamaño, en algunas especies los haces mayores presentan un conducto secretor adyacente al floema. Algunas especies presentaron traqueidas con bandas de engrosamiento secundario y muy pocas tuvieron fibras en sus haces vasculares. La presencia de fibras y conducto adyacente al floema pueden ser caracteres útiles en la identificación de especies. Sin embargo, muchos aspectos requieren mayor investigación en relación con los factores ambientales, tales como la hipodermis, los cristales de oxalato de calcio y las traqueidas con bandas de engrosamiento secundario.  Sociedad Argentina de Botánica 2018-09-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/21310 10.31055/1851.2372.v53.n3.21310 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 53 No. 3 (2018): September; 345-357 Boletín de la Sociedad Argentina de Botánica; Vol. 53 Núm. 3 (2018): Septiembre; 345-357 Boletín de la Sociedad Argentina de Botánica; v. 53 n. 3 (2018): Septiembre; 345-357 1851-2372 0373-580X 10.31055/1851.2372.v53.n3 eng https://revistas.unc.edu.ar/index.php/BSAB/article/view/21310/21049 Derechos de autor 2018 Boletín de la Sociedad Argentina de Botánica
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-325
container_title_str Boletín de la Sociedad Argentina de Botánica
language Inglés
format Artículo revista
topic Buenos Aires province
Opuntia
segment of stems
tissues.
Opuntia
provincia de Buenos Aires
segmentos del tallo
tejidos.
spellingShingle Buenos Aires province
Opuntia
segment of stems
tissues.
Opuntia
provincia de Buenos Aires
segmentos del tallo
tejidos.
Perrotta, Vanesa G.
Arambarri, Ana M.
Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina)
topic_facet Buenos Aires province
Opuntia
segment of stems
tissues.
Opuntia
provincia de Buenos Aires
segmentos del tallo
tejidos.
author Perrotta, Vanesa G.
Arambarri, Ana M.
author_facet Perrotta, Vanesa G.
Arambarri, Ana M.
author_sort Perrotta, Vanesa G.
title Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina)
title_short Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina)
title_full Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina)
title_fullStr Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina)
title_full_unstemmed Cladodes anatomy of Opuntia (Cactaceae) from the province of Buenos Aires (Argentina)
title_sort cladodes anatomy of opuntia (cactaceae) from the province of buenos aires (argentina)
description The aim of this study was to deepen the knowledge of the cladodes anatomy of nine species of Opuntia that grow in the province of Buenos Aires, Argentina. Fresh and herbarium samples were prepared according to usual methods for light microscope. Histochemical techniques were performed to identify starch, mucilage and oxalate salts. The main traits found were: epidermis smooth and uniseriate, covered by a thin cuticle and epicuticular waxes; large (range 36-57 µm length) stomata in low density (range 21-27/ mm2), located at level respect to the rest of epidermal cells with a deep substomatal chamber; a multiseriate hypodermis with one crystal layer; the cortex with external chlorenchyma and internal hydrenchyma. The eustele presents different size of vascular bundles; in some species the large ones have a secretory duct adjacent to the phloem. Some species showed wide-band tracheids and a few presented fibres in their vascular bundles. Some characters (presence of fibres and ducts) may be a useful tool for plant identification. However, many open questions remain to be investigated such as the correlation of the environment factors with hypodermis, calcium oxalate crystals, and wide-band tracheids.
publisher Sociedad Argentina de Botánica
publishDate 2018
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/21310
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first_indexed 2024-09-03T22:49:08Z
last_indexed 2024-09-03T22:49:08Z
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