Physiological basis of the selective advantage of a Spirillum sp. in a carbon-limited environment.


A Spirillum sp. and a Pseudomonas sp. possessing crossing substrate saturation curves for L-lactate were isolated from fresh water by chemostat enrichment. Their Ks and mumax values for L-lactate were: Spirillum sp., 23 micrometer and 0.35 h-1, respectively; Pseudomonas sp., 91 micrometer and 0.64 h-1, respectively. Under L-lactate limitation, pseudomonas… (More)


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