A Gram-stain-negative, aerobic bacterium, designated HXT-9T, was isolated from a river sediment. Cells were rod-shaped and non-motile. Growth occurred at 10–42 ℃ (optimum 30 ℃), at pH 5.0–8.0 (optimum pH 7.0) and with NaCl concentrations of 0–2.5% (optimum 0.5%). Phylogenetic trees based on 16S rRNA gene sequences showed that strain HXT-9T belonged to the genus Parvibaculum, and showed highest similarities to P. lavamentivorans KCTC 22775T (96.1%), followed by P. hydrocarboniclasticum EPR 92T (94.8%) and P. indicum P31T (93.6%). The average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between strain HXT-9T and P. lavamentivorans KCTC 22775T were 75.2% and 20.8%, respectively. The G + C content of strain HXT-9T genome was 62.1 mol%. The major fatty acids (> 10%) were summed feature 8 (C18:1ω7c and/or C18:1ω6c), C19:0 cyclo ω8c and C16:0 3-OH. The major respiratory quinone was ubiquinone 11 (Q-11). The major polar lipids were DPG (diphosphatidylglycerol), PG (phosphatidylglycerol), PME (phosphatidylmonomethylethanolamine), PE (phosphatidylethanolamine), PC (phosphatidylcholine) and AL (unidentified aminolipids). The phylogenetic analysis and physiological and biochemical data showed that strain HXT-9T represents a novel species in the genus Parvibaculum, for which the name P. sedimenti sp. nov. is proposed. The type strain is HXT-9T (= CCTCC AB 2019273T = KCTC 72547T).

中文翻译：

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沉积小芽孢杆菌。11 月，一种从沉积物中分离出的新型土壤细菌

从河流沉积物中分离出一种革兰氏染色阴性需氧细菌，命名为 HXT-9T。细胞呈棒状，不能运动。生长发生在 10–42 ℃（最佳 30 ℃）、pH 5.0–8.0（最佳 pH 7.0）和 NaCl 浓度为 0–2.5%（最佳 0.5%）。基于 16S rRNA 基因序列的系统发育树显示菌株 HXT-9T 属于 Parvibaculum 属，与 P. lavamentivorans KCTC 22775T (96.1%) 的相似度最高，其次是 P. carboniclasticum EPR 92T (94.8%) 和 P. indicum P31T (93.6%)。菌株 HXT-9T 和 P. lavamentivorans KCTC 22775T 之间的平均核苷酸同一性 (ANI) 和数字 DNA-DNA 杂交 (dDDH) 值分别为 75.2% 和 20.8%。菌株HXT-9T基因组的G+C含量为62.1 mol%。主要脂肪酸 (> 10%) 被总结为特征 8 (C18:1ω7c 和/或 C18:1ω6c), C19: 0 环 ω8c 和 C16:0 3-OH。主要的呼吸醌是泛醌 11 (Q-11)。主要的极性脂质是 DPG（二磷脂酰甘油）、PG（磷脂酰甘油）、PME（磷脂酰单甲基乙醇胺）、PE（磷脂酰乙醇胺）、PC（磷脂酰胆碱）和 AL（未鉴定的氨基脂类）。系统发育分析和生理生化数据表明，菌株 HXT-9T 代表了 Parvibaculum 属中的一个新物种，其名称 P.沉没物种。十一月 被提议。类型菌株是 HXT-9T (= CCTCC AB 2019273T = KCTC 72547T)。PC（磷脂酰胆碱）和 AL（未鉴定的氨基脂）。系统发育分析和生理生化数据表明，菌株HXT-9T 代表了Parvibaculum 属中的一个新物种，其名称P.沉没物种。十一月 被提议。类型菌株是 HXT-9T (= CCTCC AB 2019273T = KCTC 72547T)。PC（磷脂酰胆碱）和 AL（未鉴定的氨基脂）。系统发育分析和生理生化数据表明，菌株HXT-9T 代表了Parvibaculum 属中的一个新物种，其名称P.沉没物种。十一月 被提议。类型菌株是 HXT-9T (= CCTCC AB 2019273T = KCTC 72547T)。