Altererythrobacter arenosus sp. nov., Isolated from Marine SedimentAltererythrobacter arenosus sp. nov., Isolated from Marine Sediment

Strain CAU 1644T was isolated from sea sand at Ganghwa Island, Republic of Korea. The bacterium is aerobic, Gram-staining negative, yellow-colored, non-motile, catalase-positive, and rod-shaped. Cells of strain CAU 1644T grew at 20–40 °C and pH 6.0–10.0 with 0%–3.0% (w/v) NaCl. The 16S rRNA gene sequences of Altererythrobacter epoxidivorans CGMCC 1.7731T (identity, 98.5%) and A. xiamenensis CGMCC 1.12494T (98.0%) had the highest similarities to strain CAU 1644T. Strain CAU 1644T exhibits affiliation with the genus Altererythrobacter by phylogenetic trees based on the 16S rRNA gene and core-genome sequences. The predominant quinone was ubiquinone-10 (Q-10) and the major fatty acids were summed feature 8 (C18:1ω7c and/or C18:1ω6c) and summed feature 3 (C16:1ω7c and/or C16:1ω6c). The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values of strain CAU 1644T were 77.6% and 20.1% with A. epoxidivorans CGMCC 1.7731T, respectively, and 77.4% and 21.0% with A. xiamenensis CGMCC 1.12494T. The G + C content is 62.5%. Based on phenotypic and genotypic analyses, strain CAU 1644T represents a novel species of the genus Altererythrobacter, for which the name Altererythrobacter arenosus sp. nov., is proposed. The type strain is CAU 1644T (= KCTC 92082T = MCCC 1K07086T).