%0 Journal Article %A Ding, Linxian %A Hirose, Taketo %A Yokota, Akira %T Four novel Arthrobacter species isolated from filtration substrate %D 2009 %J International Journal of Systematic and Evolutionary Microbiology, %V 59 %N 4 %P 856-862 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.65301-0 %I Microbiology Society, %X Four Gram-positive, non-motile, non-spore-forming bacterial strains, LC4T, LC6T, LC10T and LC13T, were isolated from a filtration substrate made from trass, a volcanic rock, and their taxonomic positions were investigated by a polyphasic taxonomic approach. The novel strains grew over a temperature range of 5–40 °C, at pH values of 6–11 and in the presence of 3–7 % (w/v) NaCl. A phylogenetic tree based on 16S rRNA gene sequences showed the novel strains formed a distinct evolutionary lineage within the genus Arthrobacter. Chemotaxonomic analyses demonstrated that the major menaquinone was MK-9(H2), a menaquinone typical of the Arthrobacter globiformis group. The major fatty acid was anteiso-C15 : 0 and the major amino acid present in the cell-wall peptidoglycan was l-lysine. These observations supported the affiliation of the novel strains to the genus Arthrobacter. On the basis of their morphological, physiological and genotypic characteristics, the new isolates are considered to represent four novel species of the genus Arthrobacter, for which the names Arthrobacter niigatensis sp. nov. (type strain LC4T=IAM 15382T=CCTCC AB 206012T), Arthrobacter alkaliphilus sp. nov. (type strain LC6T=IAM 15383T=CCTCC AB 206013T), Arthrobacter echigonensis sp. nov. (type strain LC10T=IAM 15385T=CCTCC AB 206017T) and Arthrobacter albidus sp. nov. (type strain LC13T=IAM 15386T=CCTCC AB 206018T) are proposed. %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.65301-0