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FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA
Myxomycete plasmodia of four different types (not including Physarum polycephalum) were studied in thin sections viewed in the electron microscope. In the cytoplasm of the protoplasmodia of Clastoderma debaryanum and the phaneroplasmodia of Fuligo septica fixed in situ, fibrillar differentiations of...
Autores principales: | , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
The Rockefeller University Press
1965
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2106654/ https://www.ncbi.nlm.nih.gov/pubmed/14287182 |
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author | McManus, Sister M. A. Roth, L. E. |
author_facet | McManus, Sister M. A. Roth, L. E. |
author_sort | McManus, Sister M. A. |
collection | PubMed |
description | Myxomycete plasmodia of four different types (not including Physarum polycephalum) were studied in thin sections viewed in the electron microscope. In the cytoplasm of the protoplasmodia of Clastoderma debaryanum and the phaneroplasmodia of Fuligo septica fixed in situ, fibrillar differentiations of three rather distinct kinds were observed. One of these is filamentous and closely resembles the filaments (or "microtubules") of the mitotic apparatus of other species. The larger phaneroplasmodia of two species belonging to the Physarales and the plasmodium of Hemitrichia vesparium showed fewer and less well defined fibrils, and no fibrils were seen in the aphanoplasmodium of Stemonitis fusca. Good stabilization of such fibrils in larger plasmodia may require fixation methods more rigidly controlled than those which succeed with microscopic protoplasmodia. The function of the observed fibrils cannot yet be determined. Their presence in cytoplasm fixed in situ, however, lends support to those theories of protoplasmic movement which are dependent on integral cross-bonding of one or a few molecular species. |
format | Text |
id | pubmed-2106654 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1965 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21066542008-05-01 FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA McManus, Sister M. A. Roth, L. E. J Cell Biol Article Myxomycete plasmodia of four different types (not including Physarum polycephalum) were studied in thin sections viewed in the electron microscope. In the cytoplasm of the protoplasmodia of Clastoderma debaryanum and the phaneroplasmodia of Fuligo septica fixed in situ, fibrillar differentiations of three rather distinct kinds were observed. One of these is filamentous and closely resembles the filaments (or "microtubules") of the mitotic apparatus of other species. The larger phaneroplasmodia of two species belonging to the Physarales and the plasmodium of Hemitrichia vesparium showed fewer and less well defined fibrils, and no fibrils were seen in the aphanoplasmodium of Stemonitis fusca. Good stabilization of such fibrils in larger plasmodia may require fixation methods more rigidly controlled than those which succeed with microscopic protoplasmodia. The function of the observed fibrils cannot yet be determined. Their presence in cytoplasm fixed in situ, however, lends support to those theories of protoplasmic movement which are dependent on integral cross-bonding of one or a few molecular species. The Rockefeller University Press 1965-05-01 /pmc/articles/PMC2106654/ /pubmed/14287182 Text en Copyright © 1965 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 McManus, Sister M. A. Roth, L. E. FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA |
title | FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA |
title_full | FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA |
title_fullStr | FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA |
title_full_unstemmed | FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA |
title_short | FIBRILLAR DIFFERENTIATION IN MYXOMYCETE PLASMODIA |
title_sort | fibrillar differentiation in myxomycete plasmodia |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2106654/ https://www.ncbi.nlm.nih.gov/pubmed/14287182 |
work_keys_str_mv | AT mcmanussisterma fibrillardifferentiationinmyxomyceteplasmodia AT rothle fibrillardifferentiationinmyxomyceteplasmodia |