Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina

Fl oral nectaries are essential for plant reproduction but little is known about the relationship between these secretory structures and pollination system in cacti. To test phenotypic patterns in nectaries associated with pollination syndromes and/or with its pollinators, we selected from evolut...

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Detalles Bibliográficos
Autores principales: González, Valeria Vanesa, Gorostiague, Pablo, Ortega Baes, Francisco Pablo, Galati, Beatriz Gloria, Ferrucci, María Silvia
Formato: Artículo
Lenguaje:Inglés
Publicado: Academia Brasileira de Ciencias 2024
Materias:
Bird-pollinated
Cactaceae
Floral nectaries
Pollination system
Trichocereeae
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/53088
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-53088
record_format dspace
spelling I48-R184-123456789-530882024-03-05T23:04:04Z Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina González, Valeria Vanesa Gorostiague, Pablo Ortega Baes, Francisco Pablo Galati, Beatriz Gloria Ferrucci, María Silvia Bird-pollinated Cactaceae Floral nectaries Pollination system Trichocereeae Fl oral nectaries are essential for plant reproduction but little is known about the relationship between these secretory structures and pollination system in cacti. To test phenotypic patterns in nectaries associated with pollination syndromes and/or with its pollinators, we selected from evolutionarily related genera Cleistocactus, Denmoza, and Echinopsis, a set of species with bird-pollinated fl owers and fl oral traits that may fi t with ornithophily or with sphingophily, and other set of sphingophilous species with moths as effective pollinator. Observations were made under light microscope and scanning and transmission electron microscopes. Nectaries are located at the base of the fi laments welded to the tube, forming a chamber. Th e nectary consists of the epidermis with distinctive features in each genus, a secretory parenchyma which may be vascularized and a non-secretory vascularized parenchyma. Anatomical variants observed in nectaries of different species are not consistent with the fl oral pollination syndromes neither with groups of pollinators. The basic structure of the nectar chamber is relatively conserved, a fact that may be explained by phylogenetic conservatism among the genera investigated. Our results revalue the role of anatomical traits for the systematics of Cactaceae. 2024-03-05T11:43:05Z 2024-03-05T11:43:05Z 2021 Artículo González, Valeria Vanesa, et al., 2021. Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina. Anais da Academia Brasileira de Ciencias. Rio de Janeiro: Academia Brasileira de Ciencias, vol. 93, no. 4, p. 1-20. E-ISSN 1678-2690. 0001-3765 http://repositorio.unne.edu.ar/handle/123456789/53088 eng https://www.scielo.br/j/aabc/a/JGcHG5wtN8mgctYfzNpdWKh/?format=pdf&lang=en openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 1-20 application/pdf Academia Brasileira de Ciencias Anais da Academia Brasileira de Ciencias, 2021, vol. 93, no. 4, p. 1-20.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Bird-pollinated
Cactaceae
Floral nectaries
Pollination system
Trichocereeae
spellingShingle Bird-pollinated
Cactaceae
Floral nectaries
Pollination system
Trichocereeae
González, Valeria Vanesa
Gorostiague, Pablo
Ortega Baes, Francisco Pablo
Galati, Beatriz Gloria
Ferrucci, María Silvia
Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina
topic_facet Bird-pollinated
Cactaceae
Floral nectaries
Pollination system
Trichocereeae
description Fl oral nectaries are essential for plant reproduction but little is known about the relationship between these secretory structures and pollination system in cacti. To test phenotypic patterns in nectaries associated with pollination syndromes and/or with its pollinators, we selected from evolutionarily related genera Cleistocactus, Denmoza, and Echinopsis, a set of species with bird-pollinated fl owers and fl oral traits that may fi t with ornithophily or with sphingophily, and other set of sphingophilous species with moths as effective pollinator. Observations were made under light microscope and scanning and transmission electron microscopes. Nectaries are located at the base of the fi laments welded to the tube, forming a chamber. Th e nectary consists of the epidermis with distinctive features in each genus, a secretory parenchyma which may be vascularized and a non-secretory vascularized parenchyma. Anatomical variants observed in nectaries of different species are not consistent with the fl oral pollination syndromes neither with groups of pollinators. The basic structure of the nectar chamber is relatively conserved, a fact that may be explained by phylogenetic conservatism among the genera investigated. Our results revalue the role of anatomical traits for the systematics of Cactaceae.
format Artículo
author González, Valeria Vanesa
Gorostiague, Pablo
Ortega Baes, Francisco Pablo
Galati, Beatriz Gloria
Ferrucci, María Silvia
author_facet González, Valeria Vanesa
Gorostiague, Pablo
Ortega Baes, Francisco Pablo
Galati, Beatriz Gloria
Ferrucci, María Silvia
author_sort González, Valeria Vanesa
title Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina
title_short Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina
title_full Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina
title_fullStr Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina
title_full_unstemmed Nectary structure is not related to pollination system in Trichocereeae cactus from northwest Argentina
title_sort nectary structure is not related to pollination system in trichocereeae cactus from northwest argentina
publisher Academia Brasileira de Ciencias
publishDate 2024
url http://repositorio.unne.edu.ar/handle/123456789/53088
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