Niabella aquatica sp nov., isolated from lake water

作者：Siddiqi Muhammad Zubair; Im Wan Taek^*

来源：International Journal of Systematic and Evolutionary Microbiology, 2016, 66(8): 2774-2779.

DOI：10.1099/ijsem.0.001053

A Gram-reaction-negative, strictly aerobic, non-motile, yellow and rod-shaped bacterium (designated RP-2(T)) isolated from lake water, was characterized by a polyphasic approach to clarify its taxonomic position. Strain RP-2(T) was observed to grow optimally at 30 degrees C and at pH 7.0 on R2A medium. Phylogenetic analysis based on 16S rRNA gene sequences indicated that RP-2(T) represented a member of the genus Niabella of the family Chitinophagaceae and was most closely related to Niabella yanshanensis KACC 14980(T) (96.6 %), Niabella ginsengisoli KACC 13021(T) (96.5 %), Niabella drilacis DSM 25811(T) (95.7 %) and Niabella aurantiaca KACC 11698(T) (95.6 %). The DNA G+C content was 44.5 mol%. The major polar lipids were diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE). The predominant quinone was MK-7. The major fatty acids were iso-C-15:0, iso-C(15:1)G, iso-C-17:0 3-OH and summed feature 3 (comprising C-16:1 omega 7c and/or C-16:1 omega 6c) supported the affiliation of RP-2(T) to the genus Niabella. However, RP-2(T) could be distinguished genotypically and phenotypically from the species of the genus Niabella with validly published names. The novel isolate therefore represents a novel species, for which the name Niabella aquatica sp. nov. is proposed, with the type strain RP-2(T) (= KACC 18623(T) = JCM 30952(T)).

• 出版日期2016-8