A red-pigmented isolate, designated DG31D T , was isolated from the soil of a rice field in South Korea. Cells were strictly aerobic, short rod-shaped, Gram-negative, oxidase-positive, and catalase-positive. The major polar lipid was phosphatidylethanolamine (PE), and the predominant respiratory quinone was MK-7. DG31D T showed high resistance to both the UV and gamma radiations. Based on the 16S rRNA gene sequence, strain DG31D T was related to Rufibacter immobilis MCC P1 T (97.1%) and Rufibacter tibetensis 1351 T (96.5%). The average nucleotide identity (ANI) and in silico DNA–DNA hybridization (isDDH) values between the strain DG31D T and the related Rufibacter sp. were between 74.1–77.6% and 19.9–21.9%, respectively. Strain DG31D T grew between 15 and 30 °C (optimum, 25 °C), at pH 6.0–8.0 (optimum, pH 7.0) and tolerated up to 1.0% NaCl (w/v). The major cellular fatty acids of the novel strain were summed feature 3 (C 16:1 ω 7c/C 16:1 ω 6c) and C 16:1 ω 5c. Flexirubin-type pigments were absent. On the basis of the phenotypic, phylogenetic, and chemotaxonomic data, strain DG31D T represents a novel species of the genus Rufibacter , for which the name Rufibacter radiotolerans sp. nov. is proposed. The type strain is DG31D T (= JCM 19446 T = KCTC 32454 T ).

中文翻译：

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Rufibacter radiotolerans sp. 11月，从稻田中分离出一种新型抗γ射线细菌

从韩国稻田的土壤中分离出一种红色的分离物，命名为 DG31D T。细胞严格需氧、短杆状、革兰氏阴性、氧化酶阳性和过氧化氢酶阳性。主要的极性脂质是磷脂酰乙醇胺 (PE)，主要的呼吸醌是 MK-7。DG31D T 显示出对紫外线和伽马辐射的高抵抗力。根据 16S rRNA 基因序列，菌株 DG31D T 与 Rufibacter immobilis MCC P1 T (97.1%) 和 Rufibacter tibetensis 1351 T (96.5%) 相关。菌株 DG31D T 和相关 Rufibacter sp. 之间的平均核苷酸同一性 (ANI) 和计算机 DNA-DNA 杂交 (isDDH) 值。分别在 74.1-77.6% 和 19.9-21.9% 之间。菌株 DG31D T 在 15 至 30 °C（最佳，25 °C）、pH 6.0–8.0（最佳，pH 7.0）下生长，并且耐受高达 1.0% NaCl (w/v)。新菌株的主要细胞脂肪酸汇总为特征 3 (C 16:1 ω 7c/C 16:1 ω 6c) 和 C 16:1 ω 5c。不存在柔红素型色素。根据表型、系统发育和化学分类学数据，菌株 DG31D T 代表 Rufibacter 属的一个新物种，其名称 Rufibacter radiotolerans sp。十一月 被提议。类型菌株是 DG31D T (= JCM 19446 T = KCTC 32454 T)。