Full text loading...
Abstract
Respiration of the soil amoeba Acanthamoeba castellanii is stimulated by low concentrations of H2S (< 17 Pa in the gas phase); consumption of H2S accompanies respiratory stimulation. Inhibition of the main respiratory chain by 1 mm-NaN3 prevents H2S consumption. At higher concentrations, H2S inhibits respiration incompletely; the inhibition is enhanced by 1 mm-salicylhydroxamic acid. Thus this organism has two means of protection against the potentially toxic gas: the ability to oxidize H2S, and the presence of alternative pathways of electron transport which are not blocked by this respiratory inhibitor.
- Received:
- Revised:
- Published Online:
© Society for General Microbiology 1981