ELECTRICAL FIELDS, CALCIUM GRADIENTS, AND CELL GROWTH

We have outlined the evidence that fucoid eggs and pollen tubes drive an electric current through themselves as they grow, alter (or initiate) their growth in response to an applied electrical field, and develop a calcium gradient during their growth with the region of highest calcium concentration being the growing point. New data have been presented to support the notion that it is this calcium gradient that is essential in the polarization process.

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