Ca2+ as a messenger of dorsal--ventral polarity formation in frog (Rana temporaria) eggs.

Abstract

Three methods of Ca2+ administration were used to influence the location of the grey crescent and the dorsal lip of blastopore in R temporaria eggs, ie a Ca2+ microinjection into the subcortical cytoplasm, egg pricking in high Ca2+ solutions and Ca2+ ionophore A23187 microinjection and application. The treatments all induced grey crescent and dorsal lip of blastopore formation near the Ca2+ administration site. Inositol trisphosphate injections gave similar results. Colchicine injections into the eggs inhibited the appearance of both natural and Ca(2+)-induced grey crescents.

Cite this paper

@article{Bozhkova1991Ca2AA, title={Ca2+ as a messenger of dorsal--ventral polarity formation in frog (Rana temporaria) eggs.}, author={Valentina P. Bozhkova and Dmitry Voronov}, journal={Reproduction, nutrition, development}, year={1991}, volume={31 4}, pages={369-75} }