Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis

A 12-stage “normal table” of anther development in Oenothera, is presented. The stages are characterized by developmental steps in the reproductive cells and the tapetum, including waves of amylogenesis and lipogenesis as well as the production of the sporoderm layers. This is compared to a correspo...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Noher de Halac, Inés, Cismondi, Inés Adriana, Harte, Cornelia
Formato: Artículo
Lenguaje:Español
Publicado: 1990
Materias:
SB Cultura de la planta
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/3705/1/A_NoherdeHalac_Cismondi_Harte.pdf
Aporte de:
Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
id I38-R144-3705
record_format dspace
spelling I38-R144-37052025-04-11T18:57:55Z http://pa.bibdigital.ucc.edu.ar/3705/ Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis Noher de Halac, Inés Cismondi, Inés Adriana Harte, Cornelia SB Cultura de la planta A 12-stage “normal table” of anther development in Oenothera, is presented. The stages are characterized by developmental steps in the reproductive cells and the tapetum, including waves of amylogenesis and lipogenesis as well as the production of the sporoderm layers. This is compared to a corresponding table for the male-sterile (mst) mutant sterilis (ster). Differences between the development of fertile and mst anthers appear after the liberation of the microspores from the tetrads. Male sterility results from a malfunction of the tapetum in the production of ektexine sporopollenin precursors, which aggregate in the tapetal cells. The consequence is the absence of ektexine from the microspores. The endexine is then dissolved, presumably by an enzyme. This process leads to naked microspores whose unprotected cytoplasms are attacked by hydrolytic enzymes present in the thecal fluid. At anthesis the anthers contain only undefined remnants of microspores and tapetum. 1990-02-28 info:eu-repo/semantics/article info:eu-repo/semantics/closedAccess application/pdf spa http://pa.bibdigital.ucc.edu.ar/3705/1/A_NoherdeHalac_Cismondi_Harte.pdf Noher de Halac, Inés ORCID: https://orcid.org/0000-0003-2930-9282 <https://orcid.org/0000-0003-2930-9282>, Cismondi, Inés Adriana ORCID: https://orcid.org/0000-0001-6037-9794 <https://orcid.org/0000-0001-6037-9794> and Harte, Cornelia (1990) Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis. Sexual Plant Reproduction, 3 (1). pp. 41-53. ISSN 1432-2145 info:eu-repo/semantics/altIdentifier/doi/10.1007/BF00189951
institution Universidad Católica de Córdoba
institution_str I-38
repository_str R-144
collection Producción Académica Universidad Católica de Córdoba (UCCor)
language Español
orig_language_str_mv spa
topic SB Cultura de la planta
spellingShingle SB Cultura de la planta
Noher de Halac, Inés
Cismondi, Inés Adriana
Harte, Cornelia
Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis
topic_facet SB Cultura de la planta
description A 12-stage “normal table” of anther development in Oenothera, is presented. The stages are characterized by developmental steps in the reproductive cells and the tapetum, including waves of amylogenesis and lipogenesis as well as the production of the sporoderm layers. This is compared to a corresponding table for the male-sterile (mst) mutant sterilis (ster). Differences between the development of fertile and mst anthers appear after the liberation of the microspores from the tetrads. Male sterility results from a malfunction of the tapetum in the production of ektexine sporopollenin precursors, which aggregate in the tapetal cells. The consequence is the absence of ektexine from the microspores. The endexine is then dissolved, presumably by an enzyme. This process leads to naked microspores whose unprotected cytoplasms are attacked by hydrolytic enzymes present in the thecal fluid. At anthesis the anthers contain only undefined remnants of microspores and tapetum.
format Artículo
author Noher de Halac, Inés
Cismondi, Inés Adriana
Harte, Cornelia
author_facet Noher de Halac, Inés
Cismondi, Inés Adriana
Harte, Cornelia
author_sort Noher de Halac, Inés
title Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis
title_short Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis
title_full Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis
title_fullStr Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis
title_full_unstemmed Pollen ontogenesis in Oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis
title_sort pollen ontogenesis in oenothera: a comparison of genotypically normal anthers with the male-sterile mutant sterilis
publishDate 1990
url http://pa.bibdigital.ucc.edu.ar/3705/1/A_NoherdeHalac_Cismondi_Harte.pdf
work_keys_str_mv AT noherdehalacines pollenontogenesisinoenotheraacomparisonofgenotypicallynormalantherswiththemalesterilemutantsterilis
AT cismondiinesadriana pollenontogenesisinoenotheraacomparisonofgenotypicallynormalantherswiththemalesterilemutantsterilis
AT hartecornelia pollenontogenesisinoenotheraacomparisonofgenotypicallynormalantherswiththemalesterilemutantsterilis
_version_ 1832592358411075584

Ejemplares similares