Fluorescent pseudomonads capable of growth at 41 degrees C but distinct from Pseudomonas aeruginosa

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Abstract
Apyocyanogenic fluorescent Pseudomonas strains (127) capable of growth at 41.degree. C, but differing from P. aeruginosa, were typed serologically and tested for pyocin production, antibiotic susceptiblity, selected biochemical reactions and utilization of selected substrates. Results were compared with those from 40 apyocyanogenic and 14 pyocyanin-producing strains of P. aeruginosa. Unidentified fluorescent Pseudomonas (UFP) strains generally were not agglutinated by P. aeruginosa antisera and showed little or no pyocin activity. In contrast to P. aeruginosa strains, UFP strains usually failed to oxidize D-gluconate or reduce nitrate to N2. They could not use D-gluconate or D-mannitol as sole C source and were susceptible to kanamycin. The cellular fatty acid compositions of major UFP groups resembled those of the alcaligenes-stutzeri groups.