Survival and dormancy of mycobacterium avium subsp. paratuberculosis in the environment

Article Abstract:

The survival of mycobacterium avium subsp. Paratuberculosis is studied by culture of fecal material sampled at intervals for up to 117 weeks from soil and grass in pasture plots and boxes. The observed patterns of recovery in three or four experiments and changes in viable counts were indicative of dormancy, a hitherto unreported property of this taxon.

Causes of, Risk factors, Mycobacterium avium, Johne's disease

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Osmoregulation in the parasitic protozoan Tritrichomonas foetus

Article Abstract:

The authors describe the study of Tritrichomonas foetus. The investigation of T. foetus intracellular amino acids has indicated that T. foetus exhibits a regulatory volume increase in response to hyperosmotic challenge but does not exhibit a regulatory volume decrease after hypoosmotic cell swelling.

Australia, Physiological aspects, Environmental aspects, Cells (Biology), Water-electrolyte balance (Physiology), Fluid-electrolyte balance, Cells, Microbial populations, Osmoregulation, Protozoa, Protozoans, Microbial ecology

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