Growth and bacteriolytic activity of a soil amoeba, Hartmannella glebae.
A soil amoeba, Hartmannella glebae, could grow on a variety of gram-positive and gram-negative bacteria, although the rate of growth was faster in the presence of gram-negative bacteria. The amoeba, however, could not use yeasts, molds, or a green alga as a nutritional source. The extract prepared from amoebae grown in the presence of Aerobacter aerogenes and Alcaligenes faecalis could lyse intact cells and cell walls of many gram-positive bacteria at different rates. The spectrum of lytic activity was similar to that of egg-white lysozyme, with the exception that several species and strains of Bacillus, Micrococcus, and Staphylococcus were resistant to lysozyme and susceptible to the extract. The gram-negative bacteria tested were resistant.
D001419:Bacteria / Q000187:drug effects; D001433:Bacteriolysis; D002473:Cell Wall / Q000187:drug effects; D056890:Eukaryota / Q000201:enzymology / Q000254:growth & development* / Q000378:metabolism; D005658:Fungi; D006867:Hydrolases / Q000494:pharmacology; D009113:Muramidase / Q000494:pharmacology; D012988:Soil Microbiology; D015003:Yeasts
D006867:Hydrolases; D009113:Muramidase