A new Brevibacterium sp. isolated from infected genital hair of patients with white piedra

Abstract

Summary.A new aerobic gram-positive non-sporeforming bacillus has been isolated from infected genital hair of patients with white piedra in association with Trichosporon beigelii. This species has been characterised morphologically, nutritionally, by DNA base composition, cell-wall analysis and cellular fatty-acid profile on the basis of 14 isolates. The G + C content of DNA is 63-05 mol Yo. Cell walls possess meso-diaminopimelic acid (Type IV) and the sugars glucose, galactose, xylose and ribose ; mycolic acids are not present. The species has a distinct colonial and microscopic morphology, is strongly proteolytic and produces methanethiol. These findings and the cellular fatty-acid profile are compatible with the genus Brevibacterium. A new species is proposed based on the following characters : colonial and microscopic growth and morphology ; conditions for rod-to-coccus cycle ; ribose utilisation ; and tellurite reduction. The type strain has been named Brevibacterium rncbrellneri E2cr (ATCC 49030). The strong proteolytic properties may be the mechanism of pathogenesis.

Brevibacterium celere sp. nov., isolated from degraded thallus of a brown alga

“…Brevibacterium casei, Brevibacterium epidermidis (Collins et al, 1983), Brevibacterium iodinum (Collins et al, 1980), Brevibacterium mcbrellneri (McBride et al, 1993), Brevibacterium otitidis (Pascual et al, 1996), Brevibacterium avium (Pascual & Collins, 1999), Brevibacterium paucivorans (Wauters et al, 2001) and Brevibacterium luteolum (Wauters et al, 2003;Euzéby & Tindall, 2004). Brevibacteria are isolated from dairy milk products, encountered in humans as commensals or opportunistic pathogens, are found to be residents of poultry and also occur in marine and terrestrial environments, as reported by Collins (1992) and Jones & Keddie (1986), and are available from public databases.…”

Brevibacterium marinum sp. nov., isolated from seawater

“…At the time of writing, the following 15 species with validly published names, in addition to the type species Brevibacterium linens, remain within the genus: Brevibacterium antiquum, B. aurantiacum, B. permense (Gavrish et al, 2004), B. avium (Pascual & Collins, 1999), B. casei, B. epidermidis (Collins et al, 1983), B. cerele (Ivanova et al, 2004), B. iodinum (Collins et al, 1980), B. luteolum (Wauters et al, 2003;Euzéby & Tindall, 2004), B. mcbrellneri (McBride et al, 1993), B. otitidis (Pascual et al, 1996), B. paucivorans (Wauters et al, 2001), B. picturae (Heyrman et al, 2004), B. sanguinis (Wauters et al, 2004) and B. samyangense (Lee, 2006). While most of the species were isolated from dairy products, clinical specimens, poultry and soils, a few were recovered from marine environments, such as algae and beach sediment, as reported previously (Ivanova et al, 2004;Lee, 2006).…”

Brevibacterium paucivorans sp. nov., from human clinical specimens.

“…The cell morphology and culture characteristics are also different : cells of the new strains are stained evenly and they are short and plump, whereas those of B. mcbrellneri are somewhat irregular and thin. The glistening smooth or sticky colonies of the strains are in sharp contrast to the dry and crumbly colonies of B. mcbrellneri (McBride et al, 1993). Biochemically, the study strains can be further differentiated from B. mcbrellneri by the lack of casein hydrolysis.…”

“…Four species have been recognized in humans : Brevibacterium casei (Collins et al, 1983), Brevibacterium epidermidis (Collins et al, 1983), Brevibacterium mcbrellneri (McBride et al, 1993) and Brevibacterium otitidis (Pascual et al, 1996). Brevibacterium avium has been isolated from poultry (Pascual & Collins, 1999).…”