Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family

Autores
Zini, Lucia Melisa; Galati, Beatriz Gloria; Solis, Stella Maris; Ferrucci, María Silvia
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Anther and pollen development in staminate and pistillate flowers of dioecious Melicoccus lepidopetalus (Sapindaceae) were examined by light and electron microscopy. Young anthers are similar in both types of flowers; they consist of epidermis, endothecium, two to four middle layers and a secretory tapetum. The microspore tetrads are tetrahedral. The mature anther in staminate flowers presents compressed epidermal cells and endothecium cells with fibrillar thickenings. A single locule is formed in the theca by dissolution of the septum and pollen grains are shed at two-celled stage. The mature anthers of pistillate flowers differ anatomically from those of staminate flowers. The epidermis is not compressed, the endothecium does not develop fibrillar thickenings, middle layers and tapetum are generally persisting, and the stomium is nonfunctional. Microspore degeneration begins after meiosis of microspore mother cells. At anthesis, uninucleate microspores and pollen grains with vegetative and generative nuclei with no cytokinesis are observed. Some pollen walls display an abnormal exine deposition, whereas others show a well formed exine, although both are devoid of intine. These results suggest that in the evolution towards unisexuality, the developmental differences of anther wall tissues and pollen grains between pistillate and staminate flowers might become more pronounced in a derived condition, such as dioecy.
Fil: Zini, Lucia Melisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Galati, Beatriz Gloria. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
Fil: Solis, Stella Maris. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina
Fil: Ferrucci, MarÍa Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Materia
Dioecy
Flower Morphs
Anatomy
Anther-Pollen Grains-Ultrastructure
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21882
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21882
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the familyZini, Lucia MelisaGalati, Beatriz GloriaSolis, Stella MarisFerrucci, María SilviaDioecyFlower MorphsAnatomyAnther-Pollen Grains-Ultrastructurehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Anther and pollen development in staminate and pistillate flowers of dioecious Melicoccus lepidopetalus (Sapindaceae) were examined by light and electron microscopy. Young anthers are similar in both types of flowers; they consist of epidermis, endothecium, two to four middle layers and a secretory tapetum. The microspore tetrads are tetrahedral. The mature anther in staminate flowers presents compressed epidermal cells and endothecium cells with fibrillar thickenings. A single locule is formed in the theca by dissolution of the septum and pollen grains are shed at two-celled stage. The mature anthers of pistillate flowers differ anatomically from those of staminate flowers. The epidermis is not compressed, the endothecium does not develop fibrillar thickenings, middle layers and tapetum are generally persisting, and the stomium is nonfunctional. Microspore degeneration begins after meiosis of microspore mother cells. At anthesis, uninucleate microspores and pollen grains with vegetative and generative nuclei with no cytokinesis are observed. Some pollen walls display an abnormal exine deposition, whereas others show a well formed exine, although both are devoid of intine. These results suggest that in the evolution towards unisexuality, the developmental differences of anther wall tissues and pollen grains between pistillate and staminate flowers might become more pronounced in a derived condition, such as dioecy.Fil: Zini, Lucia Melisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaFil: Galati, Beatriz Gloria. Universidad de Buenos Aires. Facultad de Agronomia; ArgentinaFil: Solis, Stella Maris. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; ArgentinaFil: Ferrucci, MarÍa Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; ArgentinaElsevier Gmbh2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21882Zini, Lucia Melisa; Galati, Beatriz Gloria; Solis, Stella Maris; Ferrucci, María Silvia; Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family; Elsevier Gmbh; Flora; 207; 10-2012; 712-7200367-2530CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.flora.2012.07.003info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0367253012001272info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:10:10Zoai:ri.conicet.gov.ar:11336/21882instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:10:10.837CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
title Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
spellingShingle Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
Zini, Lucia Melisa
Dioecy
Flower Morphs
Anatomy
Anther-Pollen Grains-Ultrastructure
title_short Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
title_full Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
title_fullStr Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
title_full_unstemmed Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
title_sort Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family
dc.creator.none.fl_str_mv Zini, Lucia Melisa
Galati, Beatriz Gloria
Solis, Stella Maris
Ferrucci, María Silvia
author Zini, Lucia Melisa
author_facet Zini, Lucia Melisa
Galati, Beatriz Gloria
Solis, Stella Maris
Ferrucci, María Silvia
author_role author
author2 Galati, Beatriz Gloria
Solis, Stella Maris
Ferrucci, María Silvia
author2_role author
author
author
dc.subject.none.fl_str_mv Dioecy
Flower Morphs
Anatomy
Anther-Pollen Grains-Ultrastructure
topic Dioecy
Flower Morphs
Anatomy
Anther-Pollen Grains-Ultrastructure
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Anther and pollen development in staminate and pistillate flowers of dioecious Melicoccus lepidopetalus (Sapindaceae) were examined by light and electron microscopy. Young anthers are similar in both types of flowers; they consist of epidermis, endothecium, two to four middle layers and a secretory tapetum. The microspore tetrads are tetrahedral. The mature anther in staminate flowers presents compressed epidermal cells and endothecium cells with fibrillar thickenings. A single locule is formed in the theca by dissolution of the septum and pollen grains are shed at two-celled stage. The mature anthers of pistillate flowers differ anatomically from those of staminate flowers. The epidermis is not compressed, the endothecium does not develop fibrillar thickenings, middle layers and tapetum are generally persisting, and the stomium is nonfunctional. Microspore degeneration begins after meiosis of microspore mother cells. At anthesis, uninucleate microspores and pollen grains with vegetative and generative nuclei with no cytokinesis are observed. Some pollen walls display an abnormal exine deposition, whereas others show a well formed exine, although both are devoid of intine. These results suggest that in the evolution towards unisexuality, the developmental differences of anther wall tissues and pollen grains between pistillate and staminate flowers might become more pronounced in a derived condition, such as dioecy.
Fil: Zini, Lucia Melisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
Fil: Galati, Beatriz Gloria. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
Fil: Solis, Stella Maris. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina
Fil: Ferrucci, MarÍa Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
description Anther and pollen development in staminate and pistillate flowers of dioecious Melicoccus lepidopetalus (Sapindaceae) were examined by light and electron microscopy. Young anthers are similar in both types of flowers; they consist of epidermis, endothecium, two to four middle layers and a secretory tapetum. The microspore tetrads are tetrahedral. The mature anther in staminate flowers presents compressed epidermal cells and endothecium cells with fibrillar thickenings. A single locule is formed in the theca by dissolution of the septum and pollen grains are shed at two-celled stage. The mature anthers of pistillate flowers differ anatomically from those of staminate flowers. The epidermis is not compressed, the endothecium does not develop fibrillar thickenings, middle layers and tapetum are generally persisting, and the stomium is nonfunctional. Microspore degeneration begins after meiosis of microspore mother cells. At anthesis, uninucleate microspores and pollen grains with vegetative and generative nuclei with no cytokinesis are observed. Some pollen walls display an abnormal exine deposition, whereas others show a well formed exine, although both are devoid of intine. These results suggest that in the evolution towards unisexuality, the developmental differences of anther wall tissues and pollen grains between pistillate and staminate flowers might become more pronounced in a derived condition, such as dioecy.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/21882
Zini, Lucia Melisa; Galati, Beatriz Gloria; Solis, Stella Maris; Ferrucci, María Silvia; Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family; Elsevier Gmbh; Flora; 207; 10-2012; 712-720
0367-2530
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21882
identifier_str_mv Zini, Lucia Melisa; Galati, Beatriz Gloria; Solis, Stella Maris; Ferrucci, María Silvia; Anther structure and pollen development in Melicoccus lepidopetalus (Sapindaceae): an evolutionary approach to dioecy in the family; Elsevier Gmbh; Flora; 207; 10-2012; 712-720
0367-2530
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.flora.2012.07.003
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0367253012001272
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Gmbh
publisher.none.fl_str_mv Elsevier Gmbh
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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