Various manifestations of tentacular growth of stellate vacuole primordia have been studied in the epidermis and subepidermis of Anthoceros meristems of various ages by means of a differential staining produced by an unforeseen reaction between potassium permanganate and an unknown solute (possibly soluble carbohydrate) within young vacuole primordia to form a densely opaque precipitate. No cotinuity is present between any part of young vacuoles and other cell components near them, notably the endoplasmic reticulum, at any of the stages studied, but two misleading conditions are described and illustrated which might have been so interpreted if encountered in isolation. It is suggested that active growth of the tonoplast membrane is a necessary hypothesis in any causal explanation of the observed phenomena which is likely to be put forward.
Copyright (C) 1962, Society for Experimental Biology
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