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The isolation and properties of a denitrifying bacterium of the genusFlavobacterium

✍ Scribed by F. Pichinoty; J. Bigliardi-Rouvier; M. Mandel; B. Greenway; G. Méténier; J. L. Garcia

Publisher
Springer Netherlands
Year
1976
Tongue
English
Weight
298 KB
Volume
42
Category
Article
ISSN
0003-6072

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✦ Synopsis

A previously undescribed denitrifying bacterium was isolated from soil. The cells are small gram-negative rods, asporogenous, and non-motile. Colonies become yellow after long exposure to light. This colouring is due to the production of a carotenoid pigment. The organism shows no fermenting activity, and grows only in the presence of one of the following electron acceptors: N(F2, N20, and 02. It does not reduce nitrate. It gives a positive oxidase test and has a cytochrome c and catalase. It requires no growth factors, is a chemoorganotroph and uses only sugars as carbon and energy supply. The DNA base composition is 40.8 moles percent GC. Although presenting the physiological characteristics of a pseudomonad, the organism described has been placed in the genus Flavobacterium because of its pigmentation and its low GC percentage.

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