spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ressom, R. E.
Right arrow Articles by Dixon, K. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ressom, R. E.
Right arrow Articles by Dixon, K. E.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

Development, Vol 103, Issue 3 507-518, Copyright © 1988 by Company of Biologists

JOURNAL ARTICLES

Relocation and reorganization of germ plasm in Xenopus embryos after fertilization

RE Ressom and KE Dixon
School of Biological Sciences, Flinders University of South Australia, Bedford Park.

In the unfertilized egg, germ plasm is widely distributed throughout the vegetal subcortex in small islets. Following fertilization or artificial activation, the location and organization changes, and by the 4- to 8-cell stage the germ plasm forms a small number of large patches overlying the vegetal pole. We distinguish three processes that produce these changes. The first of these is aggregation which involves the islets moving towards the vegetal pole to form large patches by coalescence. This phase requires microtubules but does not depend on cleavage or dynamic microfilaments. The second phase is ingression during which the patches of germ plasm move to the interior of the egg. The movement is due to a flow of cytoplasm from the vegetal pole internally and the cytoplasmic current does not require either microtubules or dynamic microfilaments. In the third phase, the germ plasm is trapped in the vegetal hemisphere by microtubular arrays--in normal development, the mitotic spindle.
Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?


This article has been cited by other articles:


Home page
 JCBHome page
H. Knaut, F. Pelegri, K. Bohmann, H. Schwarz, and C. Nusslein-Volhard
Zebrafish vasa RNA but Not Its Protein Is a Component of the Germ Plasm and Segregates Asymmetrically before Germline Specification
J. Cell Biol., May 15, 2000; 149(4): 875 - 888.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
D. Houston, J Zhang, J. Maines, S. Wasserman, and M. King
A Xenopus DAZ-like gene encodes an RNA component of germ plasm and is a functional homologue of Drosophila boule
Development, January 1, 1998; 125(2): 171 - 180.
[Abstract] [PDF]

Home page
 J. Cell Sci.Home page
G Callaini, M. Riparbelli, and R Dallai
The distribution of cytoplasmic bacteria in the early Drosophila embryo is mediated by astral microtubules
J. Cell Sci., January 3, 1994; 107(3): 673 - 682.
[Abstract] [PDF]


© The Company of Biologists Ltd 1988