PROGRESSIVE CUTINIZATION IN ATRIPLEX BLADDER STALK CELLS

Bladder hairs of Atriplex prostrata BOUCHER ex DC. and Atriplex halimu s L. were examined with emphasis on the cutinization of the stalk cell wall. Results of fluorescence staining and electron microscopy indica te a progressive cutinization of the stalk cell wall. Besides the stro ng cutinization of the lateral walls, a cutin incrustation of the hori zontal cell walls of the stalk cell was noticed at a later stage of de velopment. The relevance of this incrustation pattern for the ion tran sport into the bladders is discussed.