spacer gif spacer gif spacer gif spacer gif ARCHIVE ANNOUNCEMENT! 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 References
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 Huang, F. Z.
Right arrow Articles by Weisblat, D. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Huang, F. Z.
Right arrow Articles by Weisblat, D. A.

Development, Vol 122, Issue 6 1839-1847, Copyright © 1996 by Company of Biologists

JOURNAL ARTICLES

Cell fate determination in an annelid equivalence group

FZ Huang and DA Weisblat
Department of Molecular and Cell Biology, University of California, Berkeley, 94720-3200, USA.

In embryos of glossiphoniid leeches such as Helobdella triserialis and H. robusta, pairs of adjacent 'o/p' ectodermal blast cells are known to be developmentally equipotent and yet eventually contribute distinct sets of 'O' and 'P' progeny to the nervous system and epidermis of the mature leech. It has been thought that the fate-determining interactions in this 'O-P equivalence group' take place between the equipotent cells themselves. We show here that such intra-group interactions are neither necessary nor sufficient. Instead, transient contact with cells in another ectodermal lineage is necessary and sufficient to induce o/p blast cells to assume the P fate. In the absence of this contact they assume the O fate.


This article has been cited by other articles:


Home page
 DevelopmentHome page
R. Keller
Mechanisms of elongation in embryogenesis
Development, June 15, 2006; 133(12): 2291 - 2302.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
D.-H. Kuo and M. Shankland
Evolutionary diversification of specification mechanisms within the O/P equivalence group of the leech genus Helobdella
Development, December 1, 2004; 131(23): 5859 - 5869.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
D. H. Shain, D. K. Stuart, F. Z. Huang, and D. A. Weisblat
Cell interactions that affect axonogenesis in the leech Theromyzon rude
Development, September 1, 2004; 131(17): 4143 - 4153.
[Abstract] [Full Text] [PDF]

Home page
 Stem CellsHome page
K. A. Hohenstein and D. H. Shain
Changes in Gene Expression at the Precursor -> Stem Cell Transition in Leech
Stem Cells, July 1, 2004; 22(4): 514 - 521.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
D.-H. Kuo and M. Shankland
A distinct patterning mechanism of O and P cell fates in the development of the rostral segments of the leech Helobdella robusta: implications for the evolutionary dissociation of developmental pathway and morphological outcome
Development, January 1, 2004; 131(1): 105 - 115.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
F. Z. Huang, D. Kang, F.-A. Ramirez-Weber, S. T. Bissen, and D. A. Weisblat
Micromere lineages in the glossiphoniid leech Helobdella
Development, January 2, 2002; 129(3): 719 - 732.
[Abstract] [Full Text] [PDF]

Home page
 DevelopmentHome page
E. Seaver and M Shankland
Establishment of segment polarity in the ectoderm of the leech Helobdella
Development, January 5, 2001; 128(9): 1629 - 1641.
[Abstract] [PDF]

Home page
 DevelopmentHome page
A Arai, A Nakamoto, and T Shimizu
Specification of ectodermal teloblast lineages in embryos of the oligochaete annelid Tubifex: involvement of novel cell-cell interactions
Development, January 4, 2001; 128(7): 1211 - 1219.
[Abstract] [PDF]


© The Company of Biologists Ltd 1996