Sinomicrobium weinanense sp. nov., a halophilic bacterium isolated from saline-alkali soil

Abstract

A Gram-stain-negative, facultative anaerobic, non-motile, rod-shaped strain was isolated from saline-alkali soil collected in PR China, and it was designated as strain FJxs^T. Its optimal growth was observed at 37-40 °C in the presence of 0-3 % (w/v) NaCl (pH 7.0). The major fatty acids of strain FJxs^T were iso-C_{15 : 0}, iso-C_{17 : 0} 3OH, summed feature 3, C_{16 : 0} and iso-C_{15 : 1} G. The predominant respiratory quinone was menaquinone 6. The DNA G+C content of the strain was 45.18 mol%. Whole genome and 16S rRNA gene sequence analyses indicated that strain FJxs^T exhibited 94.78 % sequence identity (the maximum) with Sinomicrobium soli N-1-3-6^T, 94.36 % with Sinomicrobium pectinilyticum 5DNS001^T, and 93.52 % with Sinomicrobium oceani SCSIO 03483^T. Analyses of genotypic, phenotypic, phylogenetic and chemotaxonomic characteristics indicated that strain FJxs^T represented a novel species of the genus Sinomicrobium. This novel species was named Sinomicrobium weinanense sp. nov. with its type strain as FJxs^T (=CCTCC AB 2019251^T=KCTC 72740^T).

Keywords: Flavobacteriaceae; Sinomicrobium weinanense sp. nov.; saline-alkali land.