[Attachment of Sulfobacillus thermosulfidooxidans cells to the surface of sulfide minerals].
The behaviour of Sulfobacillus thermosulfidooxidans cells in cultures growing at 50 degrees C in the autotrophic conditions with intensive stirring of the medium was studied by phase-contrast and electron microscopy. The following compounds (at a concentration of 1%) were used as an energy source: pyrite, chalcopyrite, arsenopyrite, antimonite, galenite, sphalerite, and copper-zinc-pyrite ore. A considerable part of cells was found to be attached to the surface of crystals in the course of oxidation of the above sulfide minerals. Adhesion of cells to the surface of minerals was accomplished by means of abundant slime formation. The cell produced slime at the highest rate by those parts of its surface which was adjacent to the mineral. Apparently, the chemoreceptor apparatus of the cell was involved in the process of adhesion. Appendages of an unknown nature were found in cells growing on pyrite. Presumably, cells are anchored to the surface of minerals by these structures.
D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D008903:Minerals; D013440:Sulfides; D013499:Surface Properties; D013855:Thiobacillus / Q000502:physiology* / Q000648:ultrastructure
D008903:Minerals; D013440:Sulfides
Prikreplenie kletok Sulfobacillus thermosulfidooxidans k poverkhnosti sul'fidnykh mineralov.