Lysobacter caeni sp. nov., isolated from the sludge of a pesticide manufacturing factory

Abstract

Strain BUT-8(T), a Gram-stain-negative, non-motile and rod-shaped aerobic bacterium, was isolated from the activated sludge of a herbicide-manufacturing wastewater treatment facility. Comparative 16S rRNA gene sequence analysis revealed that strain BUT-8(T) clustered with species of the genus Lysobacter and was closely related to Lysobacter ruishenii DSM 22393(T) (98.3 %) and Lysobacter daejeonensis KACC 11406(T) (98.7 %). The DNA G+C content of the genomic DNA was 70.6 mol%. The major respiratory quinone was ubiquinone-8, and the major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and an aminolipid. The major cellular fatty acids were iso-C15 : 0, iso-C16 : 0, iso-C17 : 0, iso-C11 : 0, iso-C11 : 0 3OH and summed feature 9 (comprising iso-C17 : 1ω9c and/or C16 : 010-methyl). The DNA-DNA relatedness between strain BUT-8(T) and its closest phylogenetic neighbours was below 70 %. Phylogenetic, chemotaxonomic and phenotypic results clearly demonstrated that strain BUT-8(T) belongs to the genus Lysobacter and represents a novel species for which the name Lysobacter caeni sp. nov. is proposed. The type strain is BUT-8(T) ( = CCTCC AB 2013087(T) = KACC 17141(T)).