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FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak
Though the dictyosome of the Golgi apparatus appears to be generally distributed in plant and animal cells, it is here described for the first time in the fungi. The present report illustrates, in electron micrographs of thin sections, the characteristic structure of the Golgi dictyosome in a specia...
Autores principales: | , |
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Formato: | Texto |
Lenguaje: | English |
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The Rockefeller University Press
1963
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2106189/ https://www.ncbi.nlm.nih.gov/pubmed/19866617 |
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author | Moore, Royall T. McAlear, James H. |
author_facet | Moore, Royall T. McAlear, James H. |
author_sort | Moore, Royall T. |
collection | PubMed |
description | Though the dictyosome of the Golgi apparatus appears to be generally distributed in plant and animal cells, it is here described for the first time in the fungi. The present report illustrates, in electron micrographs of thin sections, the characteristic structure of the Golgi dictyosome in a special cell type of a supporting pseudo-tissue (the inner ectal excipulum) of a highly evolved Ascomycete, Neobulgaria pura (Fr.) Petrak, a monotypic discomycete. This organelle may secrete the gelatinous matrix filling the cup formed by the inner ectal excipulum. All the other cells in this species appear more typical of fungal cells; i.e., they have no dictyosome and, unlike the cup-forming cells, they show characteristic continuities of the plasma membrane with the perinuclear cisternae. The dictyosome, in those cells in which it appears in this fungus, is formed by a series of vesiculations of the outer component of the nuclear envelope that align to form a stack of sacs. The sacs near the nucleus are flattened (by what appears to be an intermembrane cement) while those near the plasma membrane are more distended. These observations suggest three possibilities: first, fungi may be more closely related to other eukaryotic cells than previously suspected from electron microscopic studies; second, the outer nuclear membrane may have been the primitive precursor of the dictyosome; and third, the inverse relationship of the occurrence of the nuclear membrane plasma membrane continuities and the dictyosome suggests that the latter may have evolved as a means of removing from the cell the products of reactions occurring on a discontinuous membrane system. |
format | Text |
id | pubmed-2106189 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1963 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21061892008-05-01 FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak Moore, Royall T. McAlear, James H. J Cell Biol Article Though the dictyosome of the Golgi apparatus appears to be generally distributed in plant and animal cells, it is here described for the first time in the fungi. The present report illustrates, in electron micrographs of thin sections, the characteristic structure of the Golgi dictyosome in a special cell type of a supporting pseudo-tissue (the inner ectal excipulum) of a highly evolved Ascomycete, Neobulgaria pura (Fr.) Petrak, a monotypic discomycete. This organelle may secrete the gelatinous matrix filling the cup formed by the inner ectal excipulum. All the other cells in this species appear more typical of fungal cells; i.e., they have no dictyosome and, unlike the cup-forming cells, they show characteristic continuities of the plasma membrane with the perinuclear cisternae. The dictyosome, in those cells in which it appears in this fungus, is formed by a series of vesiculations of the outer component of the nuclear envelope that align to form a stack of sacs. The sacs near the nucleus are flattened (by what appears to be an intermembrane cement) while those near the plasma membrane are more distended. These observations suggest three possibilities: first, fungi may be more closely related to other eukaryotic cells than previously suspected from electron microscopic studies; second, the outer nuclear membrane may have been the primitive precursor of the dictyosome; and third, the inverse relationship of the occurrence of the nuclear membrane plasma membrane continuities and the dictyosome suggests that the latter may have evolved as a means of removing from the cell the products of reactions occurring on a discontinuous membrane system. The Rockefeller University Press 1963-01-01 /pmc/articles/PMC2106189/ /pubmed/19866617 Text en Copyright © Copyright, 1963, by The Rockefeller Institute Press This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Article Moore, Royall T. McAlear, James H. FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak |
title | FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak |
title_full | FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak |
title_fullStr | FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak |
title_full_unstemmed | FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak |
title_short | FINE STRUCTURE OF MYCOTA : 4. The Occurrence of the Golgi Dictyosome in the Fungus Neobulgaria pura (Fr.) Petrak |
title_sort | fine structure of mycota : 4. the occurrence of the golgi dictyosome in the fungus neobulgaria pura (fr.) petrak |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2106189/ https://www.ncbi.nlm.nih.gov/pubmed/19866617 |
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