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  • Title: Microbispora camponoti sp. nov., a novel actinomycete isolated from the cuticle of Camponotus japonicus Mayr.
    Author: Han C, Liu C, Zhao J, Guo L, Lu C, Li J, Jia F, Wang X, Xiang W.
    Journal: Antonie Van Leeuwenhoek; 2016 Feb; 109(2):215-23. PubMed ID: 26589683.
    Abstract:
    A novel actinomycete, designated strain 2C-HV3(T), was isolated from the cuticle of Camponotus japonicus Mayr collected from Harbin, Heilongjiang province, north China and characterised using a polyphasic approach. The 16S rRNA gene sequence of strain 2C-HV3(T) showed that it has high sequence similarities with Microbispora bryophytorum NEAU-TX2-2(T) (99.9 %), Microbispora amethystogenes JCM 3021(T) (98.9 %) and Microbispora rosea subsp. rosea JCM 3006(T) (98.6 %). Phylogenetic analysis based on 16S rRNA and gyrB gene sequences demonstrated that strain 2C-HV3(T) clusters with M. bryophytorum NEAU-TX2-2(T) using two tree-making algorithms. Moreover, key morphological and chemotaxonomic properties also confirmed the affiliation of strain 2C-HV3(T) to the genus Microbispora. Longitudinal paired spores were observed to be born on short sporophores branching from the aerial hyphae. The cell wall was found to contain meso-diaminopimelic acid as the diagnostic diamino acid; madurose was found in the whole cell hydrolysate. The polar lipid profile was found to consist of diphosphatidylglycerol, phosphatidylmonomethylethanolamine, phosphatidylethanolamine, phosphatidylinositol, phosphatidylinositolmannoside, ninhydrin-positive glycophospholipids, an unidentified phospholipid and an unidentified glycolipid. The predominant menaquinones were identified as MK-9(H2) and MK-9(H4). The major fatty acids were identified as 10-methyl C17:0 and iso-C16:0. However, a combination of DNA-DNA hybridization results and some phenotypic characteristics demonstrated that strain 2C-HV3(T) can be distinguished from its closely related relatives. Consequently, it is proposed that strain 2C-HV3(T) represents a new species of the genus Microbispora, for which the name Microbispora camponoti sp. nov. is proposed. The type strain is 2C-HV3(T) (=CGMCC 4.7281(T) = DSM 100527(T)).
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