Studies on the ship-fouling alga Enteromorpha (Chlorophyceae, Ulvales) IV. Polysaccharide and nucleoside diphosphatase localization

In swimming zoospores, Golgi-derived adhesive vesicles contain glycoprotein. Cytochemical techniques visualize polysaccharide in adhesive vesicles and Golgi cisternae only after detachment from the Golgi stack whilst inosine diphosphatase (IDP-ase) and thiamine pyrophosphatase (TPP-ase) are localized in both the Golgi bodies and detached cisternae.In young settled cells, the Golgi bodies, abstricted vesicles and cell wall all show identical staining reactions and lDP-ase and TPP-ase are found in the Golgi bodies and endoplasmic reticulum.The significance of these results is discussed.