Selective medium for quantitation of Bacillus popilliae in soil and in commercial spore powders
Article Abstract:
A selective medium for Bacilluspopilliae was developed based on the vancomycin resistance of some strains of the bacteria. Growth studies on the Bacillus species yielded results which indicated that the antibiotic-supplemented medium might permit growth of resistant strains of Bacillus popilliae while preventing growth of other Bacillus species found in soil. Experiments conducted to detect Bacillus popilliae in a commercial powder (Doom) and in soil using the vancomycin- supplemented medium showed that almost all of the colonies grown were of the tested Bacillus specie. Results of this study show potential value in quantitating Bacillus popilliae.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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pH and glucose profiles in aggregates of Bacillus laevolacticus
Article Abstract:
A study of the size distributions and glucose and pH profiles of aggregates of the D-(-)-lactic acid-producing organism Bacillus laevolacticus showed that the organisms were grown in continuous culture with a medium glucose concentration of 280 or 110 mM. A maximal aggregate diameter of 2.2 mm and a Sauter mean of 1.46 mm were determined for the earlier culture conditions, while aggregates from a culture with 110 mM glucose input had a maximal diameter of 1.9 mm with Sauter mean 1.07 mm. In cultures with high glucose input, lactic acid accumulated within the aggregates, and the metabolism in the central region of the larger aggregates stopped.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
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Siderophore-mediated aluminium uptake by Bacillus megaterium ATCC 19213
Article Abstract:
Bacillus megaterium ATCC 19213 absorbs aluminium with the help of its two hydroxamate siderophores, schizokinen and N-deoxyschizokinen under iron limited conditions. Aluminium is absorbed either by siderophore mediated uptake or by passive transport, depending on the concentration of the metal. Siderophore formation may protect the bacteria by lowering the free heavy metal concentration, or may provide an additional means of metal uptake.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1996
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