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Intercellular voltage gradient between oocyte and nurse cell in a polychaete.

H Emanuelsson·P Arlock
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Abstract

In the polychaete Ophryotrocha labronica the oocyte is supported during vitellogenesis by a single nurse cell, which is cytoplasmically contiguous with the oocyte through an intercellular bridge. Our electrical measurements demonstrate a marked potential difference (22-32 mV) between the oocyte and the nurse cell in mid-vitellogenesis, suggesting an electrophoretically caused migration of nurse cell constituents into the oocyte. Possibly this potential gradient helps to create a developmental prepattern in the oocyte, a role postulated for similar gradients within the oocyte-nurse cell complex of the Cecropia moth.

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AnimalsCell CommunicationCytoplasmElectrophysiologyFemaleMembrane PotentialsOocytesOrgan Culture TechniquesPolychaetaVitellogenesisJournal Article

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H Emanuelsson, P Arlock. 1985. Intercellular voltage gradient between oocyte and nurse cell in a polychaete.. https://doi.org/10.1016/0014-4827(85)90111-9

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