title: Studies on the contractile vacuole of Poterioochromonas malhamensis Peterfi. II. Antimonate stains the contractile vacuole of Poterioochromonas.
abstract: Fixation of the chrysophycean flagellate Poterioochromonas malhamensis in the presence of potassium (pyro) antimonate have been carried out. Intense antimonate deposits are characteristic of the various elements of the contractile vacuole as well as a portion of the plasma membrane adjacent to the contractile vacuole. Neither pretreatment of the cells with EGTA or EDTA nor the treatment of sections with these chelators is successful in removing the antimonate precipitates. Despite this, X-ray microanalyses of these deposits indicate the presence of calcium.
authors.affiliation: Abteilung Cytologie des Pflanzenphysiologischen Instituts, Universität Göttingen/Bundesreupblik Deutschland.
authors.forename: H
authors.initials: H
authors.lastname: Quader
authors.forename: R
authors.initials: R
authors.lastname: van Kempen
authors.forename: R
authors.initials: R
authors.lastname: Stelzer
authors.forename: D G
authors.initials: DG
authors.lastname: Robinson
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism; D000965:Antimony / Q000494:pharmacology; D002118:Calcium / Q000378:metabolism / Q000494:pharmacology; D017610:Calcium Compounds / Q000494:pharmacology; D002462:Cell Membrane / Q000378:metabolism; D002614:Chelating Agents / Q000494:pharmacology; D004492:Edetic Acid / Q000494:pharmacology; D004533:Egtazic Acid / Q000494:pharmacology; D004579:Electron Transport; D006863:Hydrogen-Ion Concentration; D009995:Osmosis; D010839:Phytoplankton / Q000737:chemistry* / Q000378:metabolism*; D011188:Potassium / Q000494:pharmacology; D014617:Vacuoles / Q000502:physiology*; D014965:X-Rays
chemical_list: D017610:Calcium Compounds; D002614:Chelating Agents; C009002:potassium antimonate; D004533:Egtazic Acid; C006872:calcium antimonate; D004492:Edetic Acid; D000965:Antimony; D000251:Adenosine Triphosphatases; D011188:Potassium; D002118:Calcium