| Cytodifferentiation during spermiogenesis in Lumbricus terrestris. | |
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MedLine Citation:
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PMID: 10976199 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The structural changes during spermiogenesis were studied on developing spermatids in seminal vesicles and receptacles of Lumbricus terrestris fixed in glutaraldehyde-osmium tetroxide and embedded in Epon-Araldite. The centriole plays a prominent role in the morphogenesis and organization of the microtubules of the manchette and flagellum. Microtubules arising from the centriole extend anteriorly to encase the developing middle piece, the nucleus, and the acrosome. The manchette not only provides a supporting framework for the cell during elongation, but also may provide the motive force for the elimination of both nucleoplasm and cytoplasm. The manchette participates in segregation and elimination of the nuclear vesicle that contains the nonchromatin nucleoplasm. Compartmentalization and conservation may also be a function of the manchette since those elements which remain within the framework of microtubules are retained, while all the cytoplasm outside the manchette is discarded. At maturation, the endoplasmic reticulum plays a key role in dismantling the manchette and reducing the cytoplasm external to it. During the early stages of middle-piece formation, six ovoid mitochondria aggregate at the posterior pole of the spermatid nucleus. Concurrent with manchette formation, the mitochondria are compressed laterally into elongate wedge-shaped components, and their outer limiting membranes fuse to form an hexagonal framework that surrounds the dense intramitochondrial matrices. Dense glycogen granules are arranged linearly between the peripheral flagellar tubules and the outer membrane of the mature sperm tail. |
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Authors:
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W A Anderson; A Weissman; R A Ellis |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of cell biology Volume: 32 ISSN: 0021-9525 ISO Abbreviation: J. Cell Biol. Publication Date: 1967 Jan |
Date Detail:
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Created Date: 2000-09-14 Completed Date: 2000-09-14 Revised Date: 2010-06-22 |
Medline Journal Info:
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Nlm Unique ID: 0375356 Medline TA: J Cell Biol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 11-26 Citation Subset: IM |
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cell Differentiation / physiology Cell Nucleus / physiology, ultrastructure Cytoplasm / physiology, ultrastructure Endoplasmic Reticulum / physiology, ultrastructure Fixatives Flagella / chemistry, physiology, ultrastructure Glutaral Glycogen / analysis Male Microscopy, Electron Oligochaeta / ultrastructure* Osmium Tetroxide Spermatids / cytology*, ultrastructure* Spermatogenesis / physiology* |
| Chemical | |
Reg. No./Substance:
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0/Fixatives; 111-30-8/Glutaral; 20816-12-0/Osmium Tetroxide; 9005-79-2/Glycogen |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
| Full Text | |
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Journal Information Journal ID (nlm-ta): J Cell Biol ISSN: 0021-9525 ISSN: 1540-8140 Publisher: The Rockefeller University Press |
Article Information Download PDF  Copyright © 1967 by The Rockefeller University Press Received Day: 12 Month: 5 Year: 1966 Print publication date: Day: 1 Month: 1 Year: 1967 Volume: 32 Issue: 1 First Page: 11 Last Page: 26 ID: 2107096 PubMed Id: 10976199 |
| CYTODIFFERENTIATION DURING SPERMIOGENESIS IN LUMBRICUS TERRESTRIS | |
| W. A. Anderson | |
| A. Weissman | |
| R. A. Ellis | |
| From the Division of Biological and Medical Sciences, Brown University, Providence, Rhode Island |
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