Unusually stable spinae from a freshwater Chlorobium sp

Article Abstract:

Examination of a green Chlorobium sp. with spinae, strain JSB1, isolated from an enrichment culture, reveals that the cells are gram-negative, nonmotile rods. Transmission electron microscopy helps identify the spinae in thin sections of cells and high-resolution scanning electron microscopy reveals the random distribution of spinae at the cell surface and at the junctions between cells. Spinae exhibits significant structural stability, as revealed by microscopic studies and covalent bonding is suggested as a factor for high structural stability.

Gram-negative bacteria, Bacteria, Morphology (Biology)

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The membrane-induced proton motive force influences the metal binding ability of bacillus subtilis cell walls

Article Abstract:

The ability of Bacillus subtilis cell walls to bind metal cations is studied. Transmission electron microscopy, energy-dispersive x-ray spectroscopy and inductively coupled plasma atomic-emission spectroscopy were used on two metallic ions on control cells. It was found that the walls of the nonliving cells and those with deenergized membranes retained more metals compared to their living counterparts.

Analysis, Bacillus subtilis

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Antiproliferative effects of homogenates derived from five strains of candidate probiotic bacteria

Article Abstract:

Research on the usage of the in vitro proliferation test conducted to describe immunomodulatory homogenate effects is analyzed. Heat treatment demonstrates its effect on the homogenates, fractioning them into cytoplasmatic and cell wall extracts.

Finland, Physiological aspects, Immune response, Bacteriology, Heat, Immune response regulation, Cytoplasm

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