1968
DOI: 10.1128/jb.95.3.771-774.1968
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Growth and Bacteriolytic Activity of a Soil Amoeba, Hartmannella glebae

Abstract: 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… Show more

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Cited by 19 publications
(10 citation statements)
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“…Studies addressing amoeba-bacteria relationships can be rather complex. Amoebae have the ability to produce antimicrobial compounds that lyse bacteria [59]; amoebae can also engulf bacteria, resulting in either degradation in lysosomes, or the bacteria may begin intracellular replication. After bacteria are phagocytized, the amoebae may thus serve as a potential reservoir [60,61].…”
Section: Discussionmentioning
confidence: 99%
“…Studies addressing amoeba-bacteria relationships can be rather complex. Amoebae have the ability to produce antimicrobial compounds that lyse bacteria [59]; amoebae can also engulf bacteria, resulting in either degradation in lysosomes, or the bacteria may begin intracellular replication. After bacteria are phagocytized, the amoebae may thus serve as a potential reservoir [60,61].…”
Section: Discussionmentioning
confidence: 99%
“…A wide variety of microorganisms (gram-positive and gram-negative bacteria, actinomycetes, myxobacteria, and molds), bacteriophages, plants, and animals have been shown to contain bacteriolytic enzymes (4,16,17). Since 1968, they have also been reported in amoebae (3,9,12,18,19). In bacteria, these enzymes seem to be involved in cell biosynthesis, regulation, and in permeation of large molecules.…”
Section: Discussionmentioning
confidence: 99%
“…The extracellular bacteriolytic enzymes produced by myxobacteria enable them to feed on other soil bacteria, a substrate which seems to be a major food source in their natural habitat (5,6). In amoebae, however, they seem to be endoenzymes, and thus the amoebae get their nutrients from the bacteria they engulf (3,18).…”
Section: Discussionmentioning
confidence: 99%
“…The presence of bacteriolytic activity in a soil amoeba, H. glebae, was first reported in 1968 (11). Since then, several bacteriolytic enzymes in amoebae have been described in the literature (1-3, 5, 8, and 12).…”
Section: Discussionmentioning
confidence: 99%