Abstract:
Four Gram-staining-positive, aerobic, non-motile, circle-shaped bacteria were isolated from the faeces of bats (Rousettus leschenaultia and Taphozous perforates) collected from Guangxi autonomous region (E106°49\'20″, N22°20\'54″) and Yunnan province (E102°04\'39″, N25°09\'10″) of South China. Strains HY006T and HY008 shared highly 16S rRNA gene sequence similarity to those of Ornithinimicrobium pratense W204T (99.3%) and O. flavum CPCC 203535T (97.3%), while the strains HY1745 and HY1793T were closest to the type strains O. ciconiae H23M54T (98.7%), O. cavernae CFH 30183T (98.3%), and O. murale 01-Gi-040T (98.1%). Furthermore, when compared to the other members of the genus Ornithinimicrobium, the digital DNA-DNA hybridization and average nucleotide identity values of the four novel strains were within the ranges of 19.6-33.7% and 70.6-87.4%, respectively, both of which were below the respective recommended cutoff values of 70.0% and 95-96%. Significantly, strain HY006T was resistant to chloramphenicol and linezolid whereas strain HY1793T was resistant to erythromycin, clindamycin (intermediately), and levofloxacin (intermediately). The main cellular fatty acids (>20.0%) of our isolates were iso-C15:0 and iso-C16:0. Strains HY006T and HY1793T contained ornithine as the diagnostic diamino acid, also along with the alanine, glycine and glutamic acid in their cell wall. Based on phylogenetic, chemotaxonomic and phenotypic analyses, these four strains could be classified as two novel species of the genus Ornithinimicrobium, for which the names Ornithinimicrobium sufpigmenti sp. nov. and Ornithinimicrobium faecis sp. nov. are proposed. The type strains are HY006T (=CGMCC 1.16565T =JCM 33397T) and HY1793T (=CGMCC 1.19143T =JCM 34881T), respectively.
摘要:
四个革兰氏染色阳性,有氧,不活动,从广西自治区(E106°49\'20”,N22°20\'54″)和云南省(E102°04\'39″,中国南方的N25°09\'10″)。HY006T和HY008菌株与PratenseW204T(99.3%)和O.黄CPCC203535T(97.3%)的菌株具有高度的16SrRNA基因序列相似性,而HY1745和HY1793T菌株最接近O.ciconiaeH23M54T型菌株(98.7%),O.海绵体CFH30183T(98.3%),和O.murale01-Gi-040T(98.1%)。此外,与鸟氨酸微生物属的其他成员相比,四个新菌株的数字DNA-DNA杂交和平均核苷酸同一性值在19.6-33.7%和70.6-87.4%之间,分别,两者均低于各自的建议临界值70.0%和95-96%。重要的是,菌株HY006T对氯霉素和利奈唑胺具有抗性,而菌株HY1793T对红霉素具有抗性,克林霉素(中间),和左氧氟沙星(中间)。我们的分离株的主要细胞脂肪酸(>20.0%)是异C15:0和异C16:0。菌株HY006T和HY1793T含有鸟氨酸作为诊断二氨基酸,还有丙氨酸,甘氨酸和谷氨酸在它们的细胞壁。基于系统发育,化学分类学和表型分析,这四个菌株可以归类为鸟氨酸微生物属的两个新物种,为此,命名为鸟氨酸微生物素。11月。和鸟氨酸。11月。是提议的。菌株类型为HY006T(=CGMCC1.16565T=JCM33397T)和HY1793T(=CGMCC1.19143T=JCM34881T),分别。