Calcium-induced Dehiscence of Cortical Granules inXenopus laevis Oocytes

✍ Scribed by Hollinger, T. G. ;Dumont, James N. ;Wallace, R. A.

• Book ID: 102890197
• Publisher: John Wiley and Sons
• Year: 1979
• Tongue: English
• Weight: 799 KB
• Volume: 210
• Category: Article
• ISSN: 0022-104X
• DOI: 10.1002/jez.1402100111

✦ Synopsis

Abstract

Microinjection of 0.1 μg of Ca^++^ into Xenopus laevis oocytes induces breakdown of the cortical granules. The cortical granules disappeared in both full grown (Stage VI) and small growing (Stage IV) oocytes. Microinjection of Mg^++^, K^+^, or Na^+^ had no effect on cortical granules in either Stage IV or Stage VI oocytes. Small quantities (0.03 μg) of Ca^++^ induced dehiscence of the cortical granules only in proximity to the injection site.