Taxonomic problems relating to the identification of species within the genus Pseudomonas

Gaby, W. L.

doi:10.1099/0096266x-5-4-153

Cited by 12 publications

(14 citation statements)

References 9 publications

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“…jluorescens, but NCIB 5940 is more difficult to place. The difference between the two species is far from clear, as has been shown by Gaby (1946Gaby ( , 1955 and by Rhodes (1956, 1959). Both species can apparently produce strains able to attack aromatic compounds.…”

Section: Resultsmentioning

confidence: 88%

Some Phenol Decomposing Strains of Pseudomonas

Davey

Turner

1961

Journal of Applied Bacteriology

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Three strains of' Pseztclonronn,r Migula, capable of utilizing phenol and other aroiriutic cornpounds as sole sonrces of ciarbon, are described. They resenible certain strains of Pa. aeruginosa and E'. f i i w r e s c e m except, in t.his ability.MANY STRAINS of Pseudomonos have been reported to have the ability to attack various aromatic compounds. These have sometimes been referred to Ps. $uorescenes or, though less often, to Ps. aeruginoaa. Sometimes they have been described simply as 'Pseudomonas sp.' and occasionally they have been given tjhe st,atus of new species, but seldom have they been fully characterized.Two cultures of Gram-negative, nonsporing, polar flagellate rods were isolated from solutions of mineral salts to which 0.5 0; of phenol had been added as a preservative and from which it had completely disappeared. Both strains were able to grow for many successive subcultures in a mineral medium with 0.1% of phenol as the sole carbon source, and retained this ability even after prolonged cult>ure in brot'h devoid of phenol. They produced pyocyanin as well as the fluorescent pigment common to many pseudomonads, and thus resembled Ps. aeruginosn (Schrogter) Migula rather than any species particularly chamcterized by the ability to attack aromatic compounds. e.g. Ps. phenoiis Hamdy P t ul. (1956). Further, one of 13 nonpyocyaninogenic cultures of Pseudomoms spp. from various sources, all of which had been maintained in broth for three or more years, was also found to be able to ntilize phenol, and it seemed desirable to compare these cultures with strains of known species of Pseudomoms which did not possess that property. MATERIALS AND METHODSOrganisms. Three phenol decomposing strains were examined. Two of these were the new pyocyaninogenic isolates N 63 and N 63 from the phenolized mineral salts solution, mentioned above, and the third, G 489, was a nonpyocyaninogenic culturc.

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Section: Resultsmentioning

confidence: 88%

Some Phenol Decomposing Strains of Pseudomonas

Davey

Turner

1961

Journal of Applied Bacteriology

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“…In the present paper, six colonial types are described and it is essential to be aware of this possible range of colonial forms if atypical cultures are to be correctly identified. We have used existing names for types previously described (Gaby, 1955;Kohler, 1958 ;Schultz, 1947), typical colonies being designated smooth in spite of their matt surface, and the smooth variant, resembling the colonies of Enterobacteriaceae, being called the S-R (smooth-rough) type. Apart from these and the rough, mucoid and gelatinous types previously described, a new form, the dwarf type, is described.…”

Section: Discussionmentioning

confidence: 99%

The Identification of Atypical Strains of Pseudomonas aeruginosa

Wahba

Darrell

1965

Journal of General Microbiology

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SUMMARYThe diversity of colonial types of Pseudomonas aeruginosa which may be encountered is described, together with a series of biochemical tests and the application of serological and pyocine typing which are of use in identifying atypical strains. These methods are particularly recommended for strains which do not form pigment. It is suggested that absence of pigment production even on special media does not preclude the possibility that a strain is P. aeruginosa.

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“…For the description of colony types exhibited by Ps. aeruginosa the reader is referred to the papers published by Gaby (1946Gaby ( , 1955 and to the photographs given therein.…”

Section: Morphological Characters (A) Coloniesmentioning

confidence: 99%

“…and on the methods to be used in their identification is the result of the different attitudes of many investigators towards the characters to be used and the methods for their demonstration, and to the relative values of physiological and biochemical characters on the one hand and pathogenicity on the other. Gaby (1955) wrote of the situation, that "In many instances the species characteristics now listed are so vague and inadequate that laboratory re-identification of a culture tkat had lost its label would be impossible", and this situation has causes which must be considered in attempting to correct it; they are summarized below.…”

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confidence: 99%

DIFFERENTIAL TECHNIQUES AND METHODS OF ISOLATION OF PSEUDOMONAS

Klinge

1960

Journal of Applied Bacteriology

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Taxonomic problems relating to the identification of species within the genus Pseudomonas

Cited by 12 publications

References 9 publications

Some Phenol Decomposing Strains of Pseudomonas

Some Phenol Decomposing Strains of Pseudomonas

The Identification of Atypical Strains of Pseudomonas aeruginosa

DIFFERENTIAL TECHNIQUES AND METHODS OF ISOLATION OF PSEUDOMONAS

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