Callose deposition during megagametogenesis in two species of Oenothera

Callose deposits are present both in degenerating megaspores of the heteropolar tetrad in Oenothera hookeri and in degenerating embryo sacs of the homopolar developing tetrad in O biennis. They are partially continuous with the cell wall and partially enclosed in the degenerating cytoplasm and show...

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Detalles Bibliográficos
Autor principal: Noher de Halac, Inés
Formato: Artículo
Lenguaje:Español
Publicado: 1980
Materias:
R Medicina (General)
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/3702/1/A_NoherdeHalac.pdf
Aporte de:
Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
id I38-R144-3702
record_format dspace
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 R Medicina (General)
spellingShingle R Medicina (General)
Noher de Halac, Inés
Callose deposition during megagametogenesis in two species of Oenothera
topic_facet R Medicina (General)
description Callose deposits are present both in degenerating megaspores of the heteropolar tetrad in Oenothera hookeri and in degenerating embryo sacs of the homopolar developing tetrad in O biennis. They are partially continuous with the cell wall and partially enclosed in the degenerating cytoplasm and show electron opaque bands within a less electron opaque material Vesicles called callose grains are present in the degenerating cytoplasm of the embryo sac in O biennis These show an electron opaque fibnllar or granular core surrounded by a halo of low electron opacity Similarities in fine structure between callose deposits of female gametophytes which follow the degenerating pathway of development, and callose plugs present in pollen tubes during their growth, are discussed.
format Artículo
Artículo
author Noher de Halac, Inés
author_facet Noher de Halac, Inés
author_sort Noher de Halac, Inés
title Callose deposition during megagametogenesis in two species of Oenothera
title_short Callose deposition during megagametogenesis in two species of Oenothera
title_full Callose deposition during megagametogenesis in two species of Oenothera
title_fullStr Callose deposition during megagametogenesis in two species of Oenothera
title_full_unstemmed Callose deposition during megagametogenesis in two species of Oenothera
title_sort callose deposition during megagametogenesis in two species of oenothera
publishDate 1980
url http://pa.bibdigital.ucc.edu.ar/3702/1/A_NoherdeHalac.pdf
work_keys_str_mv AT noherdehalacines callosedepositionduringmegagametogenesisintwospeciesofoenothera
bdutipo_str Repositorios
_version_ 1764820536286773251

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