1887

Abstract

A strictly aerobic, mesophilic bacterium, strain AMX 51, was isolated from anaerobic digester sludge. Cells were Gram-negative, motile, non-sporulating, straight to curved rods with one polar flagellum. The isolate had phenotypic traits of the genus , including cellular fatty acid and substrate utilization profiles. Physiological characteristics and antibiotic susceptibility were determined. Phylogenetic analysis revealed that strain AMX 51 was a member of the -, most closely related to DSM 9653 (similarity of 98·88 %). JCM 2833, JCM 2829, DSM 7315, DSM 7326, DSM 7327, LMG 8443 and DSM 30131 showed significant 16S rRNA gene sequence similarities to strain AMX 51. The DNA G+C composition of strain AMX 51 was 68·5 mol%. DNA–DNA hybridization analysis revealed 44·2 and 15·1 % relatedness between strain AMX 51 and the respective type strains of and . Overall results suggest that strain AMX 51 (=DSM 13099=ATCC 700918=CIP 106457) represents a novel species of the genus ; the name sp. nov. is proposed.

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2003-09-01
2019-10-23
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