Two bacterial strains, 172606-1^T and BT10^T, were isolated from soil, Korea. Both strains were Gram-stain-negative and rod-shaped bacteria. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain 172606-1^T formed a distinct lineage within the family Cytophagaceae (order Cytophagales, class Cytophagia, phylum Bacteroidetes). Strain 172606-1^T was most closely related to a member of the genus Rhodocytophaga (93.8% 16S rRNA gene sequence similarity to Rhodocytophaga aerolata 5416T-29^T). The complete genome sequence of strain 172606-1^T is 8,983,451 bp size. Optimal growth occurred at 25 °C and pH 7.0 without NaCl. The major cellular fatty acids were identified as iso-C_15:0 and C_16:1 ω5c. The major respiratory quinone was MK-7. The major polar lipid was phosphatidylethanolamine. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain BT10^T belongs to the genus Nibribacter and is closely related to Nibribacter koreensis GSR 3061^T (96.5%), Rufibacter glacialis MDT1-10-3^T (95.7%), Rufibacter sediminis H-1^T (95.1%) and Rufibacter quisquiliarum CAI-18b^T (94.9%). The complete genome sequence of strain BT10^T is 4,374,810 bp size. The predominant (> 10%) cellular fatty acids of strain BT10^T were iso-C_15:0 and summed feature 4 (anteiso-C_17:1 B/iso-C_17:1 I) and a predominant quinone was MK-7. In addition, strain BT10^T has phosphatidylethanolamine (PE) as the major polar lipid. On the basis of biochemical, chemotaxonomic and phylogenetic analyses, strain 172606-1^T represents a novel bacterial species of the genus Rhodocytophaga, for which the name Rhodocytophaga rosea is proposed and strain BT10^T represents a novel species of the genus Nibribacter, for which the name Nibribacter ruber is proposed. The type strains of Rhodocytophaga rosea and Nibribacter ruber are 172606-1^T (= KCTC 62096^T = NBRC 114410^T) and BT10^T (= KCTC 62607^T = NBRC 114383^T), respectively.

从韩国土壤中分离出两种细菌菌株 172606-1 ^T和 BT10 ^T。两种菌株均为革兰氏染色阴性和杆状细菌。基于 16S rRNA 基因序列的系统发育分析表明，菌株 172606-1 ^T在噬菌科（Cytophagales 目，Cytophagia类，拟杆菌门）内形成了一个独特的谱系。菌株 172606-1 ^T与嗜红嗜血菌属( Rhodocytophaga aerolata 5416T-29 ^T )的成员最密切相关（93.8% 16S rRNA 基因序列相似性）。菌株172606-1的全基因组序列^T是 8,983,451 bp 大小。最佳生长发生在 25 °C 和 pH 7.0 且不含 NaCl。主要的细胞脂肪酸被鉴定为iso-C _15:0和C _16:1 ω 5 c。主要的呼吸醌是MK-7。主要的极性脂质是磷脂酰乙醇胺。系统发育分析基于16S rRNA基因序列表明，菌株BT10 ^Ť属于埃希Nibribacter和密切相关Nibribacter koreensis GSR 3061 ^Ť（96.5％），Rufibacter冰川MDT1-10-3 ^Ť（95.7％），Rufibacter sediminis H- 1^吨(95.1%) 和Rufibacter quisquiliarum CAI-18b ^T (94.9%)。菌株 BT10 ^T的完整基因组序列为 4,374,810 bp 大小。BT10 ^T菌株的主要 (> 10%) 细胞脂肪酸是 iso-C _15:0和总和特征 4 (anteiso-C _17:1 B/iso-C _17:1 I)，主要的醌是 MK-7 . 此外，菌株 BT10 ^T具有磷脂酰乙醇胺 (PE) 作为主要的极性脂质。生化，化学分类和系统发育分析的基础上，应变172606-1 ^Ť表示属的新的细菌物种Rhodocytophaga，为此，名称Rhodocytophaga糠疹提出了 BT10 ^T菌株代表了Nibribacter属的一个新物种，建议将其命名为Nibribacter ruber。Rhodocytophaga rosea和Nibribacter ruber的类型菌株分别为 172606-1 ^T (= KCTC 62096 ^T  = NBRC 114410 ^T ) 和 BT10 ^T (= KCTC 62607 ^T  = NBRC 114383 ^T )。