Sphingobacterium siyangense sp. nov., isolated from farm soil

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Abstract
The taxonomic position of a novel Gram-negative strain, designated SY1T, isolated from a farm-soil sample obtained from Jiangsu Province, PR China, was characterized by using a polyphasic approach. The cells were non-motile, non-spore-forming rods. The organism grew optimally at 30–37 °C and at pH 6.0–8.0. Based on 16S rRNA gene sequence analysis, strain SY1T is a member of the genus Sphingobacterium; Sphingobacterium multivorum JCM 21156T was the nearest relative (98.5 % sequence similarity). The predominant fatty acids of strain SY1T were iso-C15 : 0 (32.9 %), C16 : 0 (10.9 %) and summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1 ω7c; 24.1 %). The DNA G+C content was 38.5 mol%. The low level of DNA–DNA relatedness (2.2 %) to S. multivorum JCM 21156T in combination with differential morphological and biochemical properties demonstrated that strain SY1T (=KCTC 22131T=CGMCC 1.6855T) should be classified as representing a novel species of the genus Sphingobacterium for which the name Sphingobacterium siyangense sp. nov. is proposed.

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