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Aeromicrobium panaciterrae sp. nov., isolated from soil of a ginseng field in South Korea

¹ Department of Biological Sciences, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
² Key Laboratory of Natural Resources of the Changbai Mountain and Functional Molecules (Yanbian University), Ministry of Education, Yanji 133002, China
³ Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, 52 Oeundong, Yusong-gu, Daejeon 305-333, Republic of Korea

Correspondence
Wan-Taek Im
wandra{at}kaist.ac.kr
Sung-Taik Lee
e_stlee{at}kaist.ac.kr

A Gram-positive, rod-shaped, non-spore-forming and strictly aerobic bacterium (Gsoil 161^T) was isolated from soil of a ginseng field in Pocheon Province, South Korea. The novel isolate was characterized using a polyphasic approach in order to determine its taxonomic position. On the basis of 16S rRNA gene sequence similarity, strain Gsoil 161^T was shown to belong to the family Nocardioidaceae and was related to Aeromicrobium marinum (98.0 % similarity to the type strain), Aeromicrobium alkaliterrae (97.6 %), Aeromicrobium fastidiosum (97.0 %) and Aeromicrobium erythreum (96.7 %); the sequence similarity with other species within the family was less than 94.4 %. It was characterized chemotaxonomically as having LL-2,6-diaminopimelic acid in the cell-wall peptidoglycan, MK-9(H₄) as the predominant menaquinone and C_{16 : 0}, 10-methyl C_{18 : 0} (tuberculostearic acid), C_{16 : 0} 2-OH, 10-methyl C_{17 : 0} and 10-methyl-C_{16 : 0} as the major fatty acids. The G+C content of the genomic DNA was 65.5 mol%. These chemotaxonomic properties and phenotypic characteristics support the affiliation of strain Gsoil 161^T to the genus Aeromicrobium. Results of physiological and biochemical tests enabled strain Gsoil 161^T to be differentiated genotypically and phenotypically from currently known Aeromicrobium species. Therefore, strain Gsoil 161^T represents a novel species, for which the name Aeromicrobium panaciterrae sp. nov. is proposed. The type strain is strain Gsoil 161^T (=KCTC 19131^T=DSM 17939^T=CCUG 52476^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain Gsoil 161^T is AB245387.

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