Morphological, physiological, and biochemical characteristics of some violet-pigmented bacteria isolated from seawater

Abstract

Sixteen violet-pigmented heterotrophic bacilli were isolated from Mediterranean coastal waters. Morphological and physiological studies showed that they have a number of characteristics specific to the genus Chromobacterium. However, the absence of catalase, the presence of oxidase, and, more especially, the low percentage of bases guanine and cytosine in their DNA exclude them from the genus. The specificity of some characters assigned to Chromobacterium can thus be discussed. Several features allow us to consider such bacteria as being related to the genus Alteromonas; their consistency within the 16 strains investigated leads us to consider them as a single species, for which the specific name Alteromonas luteo-violaceus (sp. nov.) is proposed.

Alteromonas citrea, a New Gram-Negative, Yellow-Pigmented Species from Seawater

“…The methods and the compositions of the media used in this study were previously described (3,4). Only additional techniques or significant modifications of the previously described media and methods referred to above will be presented below.…”

Assimilatory sulfur metabolism in marine microorganisms

“…Edition (Buchanan and Gibbons, 1974) and a marine representative, Chromobacterium marinum (Hamilton and Austin, 1967), but also to the Alteromonas luteo-violaceus of Gauthier (1976). The only apparent distinction of taxonomic value is the moles % (G+C), which is about 42 for Alteromonas and 65-72 for Chromobacterium.…”

A New Antibiotic-Producing Bacterium from Seawater: Alteromonas aurantia sp. nov.

“…The methods and media used for the phenotypic characterization of strains were previously described (10,11,13). These methods were modified as follows.…”