Literature DB >> 6803360

Calcium ionophore polarizes ooplasmic segregation in ascidian eggs.

W R Jeffery.   

Abstract

Calcium ionophore A23187 promotes ooplasmic segregation and orange crescent formation in eggs of the ascidian Boltenia villosa. When eggs were exposed to a gradient A23187 the orange crescent was induced to form in the region corresponding to the highest concentration of ionophore. This result is consistent with the hypothesis that a local increase in intracellular calcium polarizes cytoplasmic localization in the ascidian embryo.

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Year:  1982        PMID： 6803360     DOI： 10.1126/science.6803360

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  6 in total

1.  Ooplasmic segregation of the myoplasmic actin network in stratified ascidian eggs.

Authors:  William R Jeffery; Stephen Meier
Journal:  Wilehm Roux Arch Dev Biol       Date:  1984-07

2.  Local surface modulation correlated with ooplasmic segregation in eggs ofSabellaria alveolata (annelida, polychaeta).

Authors:  J E Speksnijder; M R Dohmen
Journal:  Wilehm Roux Arch Dev Biol       Date:  1983-09

Review 3.  Ionic currents in morphogenesis.

Authors:  R Nuccitelli
Journal:  Experientia       Date:  1988-08-15

4.  Changes in sodium, calcium and potassium currents during early embryonic development of the ascidian Boltenia villosa.

Authors:  M L Block; W J Moody
Journal:  J Physiol       Date:  1987-12       Impact factor: 5.182

5.  Effects of A23187 upon cortical granule exocytosis in eggs of Brachydanio.

Authors:  Mary Ellen Schalkoff; Nathan H Hart
Journal:  Rouxs Arch Dev Biol       Date:  1986-01

6.  The activation wave of calcium in the ascidian egg and its role in ooplasmic segregation.

Authors:  J E Speksnijder; C Sardet; L F Jaffe
Journal:  J Cell Biol       Date:  1990-05       Impact factor: 10.539
  6 in total

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