Chryseomonas polytricha gen. nov., sp. nov., a Pseudomonas-Like Organism from Human Clinical Specimens and Formerly Known as Group Ve-1

Abstract

We propose the new genus and species Chryseomonas polytricha for a group formerly called Ve-1. Each of the nine strains in the new species was examined for 129 characteristics, including reactions in 58 enzyme tests (API ZYM System; API Systems SA). These bacteria are rod shaped, aerobic, gram negative, yellow pigmented, motile by multitrichous polar flagella, and oxidatively saccharolytic, but they do not produce cytochrome oxidase. The mean guanine-plus-cytosine content of the deoxyribonucleic acid (DNA) of three representative strains is 54.6 ± 1.1 mol%. The DNA relatedness of eight strains of C. polytricha to the type strain E2770 (= NCTC 11843) averaged 95% (hydroxyapatite method, 60°C). Relatedness to the type strains of the five major ribosomal ribonucleic acid hybridization groups of Pseudomonas and to a reference strain of group Ve-2 was 2% or less. Most of the strains of the new species were isolated from human clinical specimens.