Polarizing fucoid eggs drive a calcium current through themselves

Science. 1975 Jan 10;187(4171):70-2. doi: 10.1126/science.1167318.

Abstract

Calcium ions enter the prospective growth pole of polarizing Pelvetia eggs faster than the opposite pole and leave this antipode faster than the growth pole. The calcium current is greatest when first measured at 6 hours after fertilization and decreases as the time of final commitment to growth in a particular direction approaches.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Biological Transport, Active
  • Calcium / metabolism*
  • Calcium Radioisotopes
  • Cell Division
  • Electrophysiology
  • Eukaryota / metabolism*
  • Female
  • Fertilization
  • Ovum / metabolism*
  • Phaeophyceae / metabolism*

Substances

  • Calcium Radioisotopes
  • Calcium