Lysobacter arseniciresistens sp. nov., an arsenite-resistant bacterium isolated from iron-mined soil

A Gram-negative, aerobic, motile, rod-shaped, arsenite [As(III)]-resistant bacterium, designated strain ZS79^T, was isolated from subsurface soil of an iron mine in China. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain ZS79^T clustered closely with strains of five Lysobacter species, with 96.9, 96.1, 96.0, 95.8 and 95.3 % sequence similarities to Lysobacter concretionis Ko07^T, L. daejeonensis GH1-9^T, L. defluvii IMMIB APB-9^T, L. spongiicola KMM 329^T and L. ruishenii CTN-1^T, respectively. The major cellular fatty acids were iso-C_15 : 0 (28.6 %), iso-C_17 : 1ω9c (19.9 %), iso-C_16 : 0 (13.6 %), iso-C_11 : 0 (12.6 %) and iso-C_11 : 0 3-OH (12.4 %). The genomic DNA G+C content was 70.7 mol% and the major respiratory quinone was Q-8. The major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and an unknown phospholipid. On the basis of morphological and physiological/biochemical characteristics, phylogenetic position and chemotaxonomic data, this strain is considered to represent a novel species of the genus Lysobacter, for which the name Lysobacter arseniciresistens sp. nov. is proposed; the type strain is ZS79^T ( = CGMCC 1.10752^T = KCTC 23365^T).