Nocardia lasii sp. nov., a novel actinomycete isolated from the cuticle of an ant (Lasius fuliginosus L)

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• 作者：Chongxi Liu ; Lu Bai ; Lan Ye ; Junwei Zhao ; Kai Yan…
• 关键词：Lasius fuliginosus L ; Nocardia lasii sp. nov. ; Polyphasic taxonomy ; 16S rRNA gene
• 刊名：Antonie van Leeuwenhoek
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：109
• 期：11
• 页码：1513-1520
• 全文大小：627 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Microbiology
  Medical Microbiology
  Plant Sciences
  Soil Science and Conservation
  
• 出版者：Springer Netherlands
• ISSN：1572-9699
• 卷排序：109

文摘

A novel actinomycete, designated strain 3C-HV12T, was isolated from the cuticle of an ant (Lasius fuliginosus L) and characterised using a polyphasic approach. 16S rRNA gene sequence similarity studies showed that strain 3C-HV12T belongs to the genus Nocardia with high sequence similarities to Nocardia soli DSM 44488T (99.2 %) and Nocardia cummidelens R89T (99.2 %), and phylogenetically clustered with these two species and Nocardia ignorata DSM 44496T (98.8 %), Nocardia salmonicida JCM 4826T (98.8 %), Nocardia fluminea S1T (98.8 %), Nocardia coubleae OFN N12T (98 %) and Nocardiacamponoti 1H-HV4T (97.4 %). The morphological and chemotaxonomic properties of the strain are also consistent with those of members of the genus Nocardia. The strain was observed to form extensively branched substrate hyphae which fragmented into rod-shaped and non-motile elements. The cell wall was found to contain meso-diaminopimelic acid and the whole cell sugars were identified as arabinose and galactose. The predominant menaquinone was identified as MK-8(H_{4, ω-cycl}). The phospholipid profile was found to consist of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol and phosphatidylinositol mannoside. The major fatty acids were identified as C_18:0 10-methyl, C_16:0 and C_16:1ω7c. Mycolic acids were found to be present. A combination of DNA–DNA hybridisation experiments and phenotypic tests were carried out between strain 3C-HV12T and its phylogenetically closely related strains, which further clarified their relatedness and demonstrated that 3C-HV12T could be distinguished from these strains. Therefore, the strain is concluded to represent a novel species of the genus Nocardia, for which the name Nocardia lasii sp. nov. is proposed. The type strain is 3C-HV12T (=DSM 100525T = CGMCC 4.7279T).