1887

Abstract

SUMMARY: Thirteen strains previously assigned to the species and were subjected to detailed characterization. Ten of these strains could be identified as and two as . These two species can be readily distinguished by differences in their nutritional spectra, their growth factor requirements and their pigmentation. The DNA of the two strains of contained 65.8 moles% guanine+cytosine (GC), and the DNA of the ten strains of from 66.3 to 67.3 moles%. One of the 13 strains examined had DNA of significantly lower GC content (62.2 moles%) and also differed in several phenotypic respects from both species; it is probably a monotypic representative of a third species, as yet unnamed.

All the strains examined share a series of distinctive properties, which justify their recognition as a special subgroup of aerobic pseudomonads. The defining characters of this subgroup include: monotrichous flagellation, with flagella of very short wavelength; a requirement for pantothenate, biotin and cyanocobalamin; a limited range of carbon sources; production of acid from primary alcohols by all strains that can utilize alcohols; inability to denitrify or to use nitrate as a nitrogen source; and accumulation of poly-β-hydroxybutyrate as an intracellular reserve.

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/content/journal/micro/10.1099/00221287-53-3-349
1968-10-01
2021-10-24
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