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

Strain CAU 1644 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 1644 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 1.7731 (identity, 98.5%) and A. xiamenensis CGMCC 1.12494 (98.0%) had the highest similarities to strain CAU 1644. Strain CAU 1644 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 (Cω7c and/or Cω6c) and summed feature 3 (Cω7c and/or Cω6c). The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values of strain CAU 1644 were 77.6% and 20.1% with A. epoxidivorans CGMCC 1.7731, respectively, and 77.4% and 21.0% with A. xiamenensis CGMCC 1.12494. The G + C content is 62.5%. Based on phenotypic and genotypic analyses, strain CAU 1644 represents a novel species of the genus Altererythrobacter, for which the name Altererythrobacter arenosus sp. nov., is proposed. The type strain is CAU 1644 (= KCTC 92082 = MCCC 1K07086).