title: [ On the absence of high-molecular polyphosphates in chloroplasts of Acetabularia mediterranea].
abstract: High-molecular polyphosphates have been identified in a crude fraction of chloroplasts of Acetabularia mediterranea. However, after a short-term treatment of the fraction with a hypotonic salt solution and centrifugation in a sucrose density gradient it was found possible to completely separate high-molecular polyphosphates from intact chloroplasts. Consequently the chloroplasts themselves contain no high-molecular polyphosphates. It is assumed that the high-molecular polysphates found in a crude fraction of chloroplasts are constitutents of the "metachromatic" granules which can be revealed in the A. mediterranea cytoplasm by cytochemical methods.
mesh_terms: D000076:Acetabularia / Q000032:analysis* / Q000166:cytology; D000460:Chlorophyta / Q000032:analysis*; D002736:Chloroplasts / Q000032:analysis*; D003594:Cytoplasmic Granules / Q000032:analysis; D008970:Molecular Weight; D010710:Phosphates / Q000032:analysis*
chemical_list: D010710:Phosphates
vernacular_title: Ob otsutstivii vysokomolekuliarnykh polifosfatov v khloroplastakh Acetabularia mediterranea.