Chryseomonas luteola comb. nov. and Flavimonas oryzihabitans gen. nov., comb. nov., Pseudomonas-Like Species from Human Clinical Specimens and Formerly Known, Respectively, as Groups Ve-1 and Ve-2

Abstract

Pseudomonas luteola Kodama et al. 1985 is a senior subjective synonym of Chryseomonas polytricha Holmes et al. 1986 (formerly group Ve-1). The type strain of P. luteola (JCM 3352) was 78% related to the type strain of C. polytricha (NCTC 11843). We propose the new combination Chryseomonas luteola for this organism. For Pseudomonas oryzihabitans Kodama et al. 1985 (formerly group Ve-2) we propose the new genus and new combination Flavimonas oryzihabitans. We were in the process of proposing a scientific name for group Ve-2 on the basis of an examination of 19 strains when the description of P. oryzihabitans was published. We have included the type strain of P. oryzihabitans for comparison and here present our results for all 20 strains. Each of the 20 strains was examined for 129 characteristics, including reactions in 58 enzyme tests (API ZYM system). These bacteria are rod shaped, aerobic, gram negative, yellow pigmented, motile by a single polar flagellum, and saccharolytic, but they do not produce cytochrome oxidase. The mean guanine-plus-cytosine content of the deoxyribonucleic acid of three representative strains was 63.6 ± 1.6 mol%. The deoxyribonucleic acid relatedness of 11 strains of group Ve-2 to the strain we would have proposed as the type strain, CL162/81 (= NCTC 11850), averaged 93% (hydroxyapatite method, 70°C). The type strain of P. oryzihabitans (JCM 2952) was 93% related to CL162/81. The relatedness of CL162/81 to the respective type strains of the five major ribosomal ribonucleic acid hybridization groups of the genus Pseudomonas and to the type strain of C. polytricha (formerly group Ve-1) was 5% or less. All strains, except the type strain, of F. oryzihabitans were isolated from human clinical specimens.