L’esame delle immagini al microscopio elettronico suggerisce una particolare ultrastruttura dei plasmodesmi che risultano essere, in Tillandsia usneoides, di natura membranosa. Viene presentato un modello di plasmodesma che mette in risalto la struttura micellare della membrana costituente l'asse centrale, anche tenendo conto dell'attività fisiologica che queste strutture sono chiamate a svolgere.
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Con il contributo del Ministero per i Beni e le Attività Culturali