Chryseomicrobium deserti sp. Nov., isolated from desert soil in South Korea

A Gram-stain positive, aerobic, non-motile, rod-shaped bacterium (THG-T1.18^T) was isolated from desert soil. Growth occurred at 20-35°C (optimum 28-30°C), at pH 5-7 (optimum 7) and at 0-4%NaCl (optimum 0-1%). Based on 16S rRNA sequence analysis, the nearest phylogenetic neighbours of strain THG-T1.18^Twere identified as Chryseomicrobium amylolyticum DSM 23442^T (96.6%), Chryseomicrobium imtechense JCM 16573^T(96.3%) and Chryseomicrobium aureum KACC 17219^T(96.1%). The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, two unidentified aminolipids and one unidentified glycolipid. The quinone system was composed of MK-7, MK-8 and MK-6. The major fatty acids were iso C_15:0and anteiso C_15:0. The type of peptidoglycan was A4β, containing of l-Orn-D-Glu. The DNA G+Ccontent of strain THG-T1.18^Twas 50.4mol%. DNA-DNA hybridization values between strain THG-T1.18^Tand C. amylolyticum DSM 23442^T, C. imtechense JCM 16573^T, C. aureum KACC 17219^Twere 24.7% (20.1% reciprocal analysis), 19.5% (16.1%) and 10.4% (6.7%) respectively. On the basis of the phylogenetic analysis, chemotaxonomic data, physiological characteristics and DNA-DNA hybridization data, strain THG-T1.18^Trepresents a novel species of the genus Chryseomicrobium, for which the name Chryseomicrobium deserti sp. nov. is proposed. The type strain is THG-T1.18^T(=KACC 18929^T=CCTCC AB 2016179^T).