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A novel actinobacterium strain, 2614A723T, was isolated from rhizosphere soil of mangrove plant Acanthus ilicifolius collected at Touyuan, Wenchang, Hainan province, China. A phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 2614A723T formed a distinct phyletic line in the genus Actinoallomurus , the 16S rRNA gene tree sharing similarities of 98.35 %, 98.07 % and 97.86 % with Actinoallomurus spadix NBRC 14099T, Actinoallomurus purpureus TTN02-30T and Actinoallomurus luridus TT02-15T , respectively. Strain 2614A723T contained lysine and meso-diaminopimelic acid in the cell wall peptidoglycan and madurose, galactose and xylose in the whole-cell sugars. The predominant menaquinones were MK-9(H4) and MK-9(H6). The major polar phospholipids were phosphatidylglycerol and diphosphatidylglycerol. The predominant fatty acids were iso-C16 : 0 and anteiso-C17 : 0. These chemotaxonomic data confirmed the affiliation of strain 2614A723T to the genus Actinoallomurus . It is apparent from the combined phenotypic data, biochemical tests and DNA–DNA hybridization values that strain 2614A723T should be classified in the genus Actinoallomurus as a representative of a novel species. The name Actinoallomurus acanthiterrae sp. nov. is proposed with strain 2614A723T ( = CCTCC AA 2012001T = DSM 45727T) as the type strain.
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