scholarly journals Oral–Aboral Axis Specification in the Sea Urchin Embryo

2001 ◽  
Vol 230 (1) ◽  
pp. 18-28 ◽  
Author(s):  
James A. Coffman ◽  
Eric H. Davidson
Keyword(s):  
Sea Urchin ◽  
Sea Urchin Embryo ◽  
Axis Specification

scholarly journals Oral–aboral axis specification in the sea urchin embryo, IV: Hypoxia radializes embryos by preventing the initial spatialization of nodal activity

2014 ◽  
Vol 386 (2) ◽  
pp. 302-307 ◽  
Author(s):  
James A. Coffman ◽  
Abigail Wessels ◽  
Carolyn DeSchiffart ◽  
Katarina Rydlizky
Keyword(s):  
Sea Urchin ◽  
Sea Urchin Embryo ◽  
Axis Specification

scholarly journals Oral–aboral axis specification in the sea urchin embryo

2009 ◽  
Vol 330 (1) ◽  
pp. 123-130 ◽  
Author(s):  
James A. Coffman ◽  
Alison Coluccio ◽  
Antonio Planchart ◽  
Anthony J. Robertson
Keyword(s):  
Sea Urchin ◽  
Sea Urchin Embryo ◽  
Axis Specification

scholarly journals The oral-aboral axis of a sea urchin embryo is specified by first cleavage

Development ◽  
1989 ◽  
Vol 106 (4) ◽  
pp. 641-647 ◽  
Author(s):  
R.A. Cameron ◽  
S.E. Fraser ◽  
R.J. Britten ◽  
E.H. Davidson
Keyword(s):  
Sea Urchin ◽  
Cleavage Plane ◽  
Strongylocentrotus Purpuratus ◽  
Cell Stage ◽  
Animal Pole ◽  
Sea Urchin Embryo ◽  
The Future ◽  
Axis Specification ◽  
The Right ◽  
Lines Of Evidence

Several lines of evidence suggest that the oral-aboral axis in Strongylocentrotus purpuratus embryos is specified at or before the 8-cell stage. Were the oral-aboral axis specified independently of the first cleavage plane, then a random association of this plane with the blastomeres of the four embryo quadrants in the oral-aboral plane (viz. oral, aboral, right and left) would be expected. Lineage tracer dye injection into one blastomere at the 2-cell stage and observation of the resultant labeling patterns demonstrates instead a strongly nonrandom association. In at least ninety percent of cases, the progeny of the aboral blastomeres are associated with those of the left lateral blastomeres and the progeny of the oral blastomeres with the right lateral ones, respectively. Thus, ninety percent of the time the oral pole of the future oral-aboral axis lies 45 degrees clockwise from the first cleavage plane as viewed from the animal pole. The nonrandom association of blastomeres after labeling of the 2-cell stage implies that there is a mechanistic relation between axis specification and the positioning of the first cleavage plane.

scholarly journals Oxygen, pH, and oral-aboral axis specification in the sea urchin embryo

2011 ◽  
Vol 78 (2) ◽  
pp. 68-68 ◽  
Author(s):  
Alison E. Coluccio ◽  
Taylor J. LaCasse ◽  
James A. Coffman
Keyword(s):  
Sea Urchin ◽  
Sea Urchin Embryo ◽  
Axis Specification

scholarly journals Oral–aboral axis specification in the sea urchin embryo

2004 ◽  
Vol 273 (1) ◽  
pp. 160-171 ◽  
Author(s):  
James A. Coffman ◽  
John J. McCarthy ◽  
Carrie Dickey-Sims ◽  
Anthony J. Robertson
Keyword(s):  
Sea Urchin ◽  
Sea Urchin Embryo ◽  
Axis Specification

The Sea Urchin Embryo

1986 ◽  
Author(s):  
Giovanni Giudice
Keyword(s):  
Sea Urchin ◽  
Sea Urchin Embryo
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