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Kocuria aegyptia sp. nov., a novel actinobacterium isolated from a saline, alkaline desert soil in Egypt

¹ Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan, 650091, People's Republic of China
² DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Mascheroder Weg 1b, D-38124 Braunschweig, Germany
³ Botany Department, Faculty of Science, Cairo University, Beni-Suef, Egypt
⁴ Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn

A coccoid, non-motile actinobacterium, designated strain YIM 70003^T, was isolated from a saline, alkaline, desert-soil sample from Egypt. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the organism formed a distinct phyletic line within the genus Kocuria and was most closely related to Kocuria polaris DSM 14382^T (98·6 % sequence similarity) and Kocuria rosea DSM 20447^T (98·2 %). Chemotaxonomic data, including the Lys–Ala₃ peptidoglycan type, the presence of phosphatidylglycerol and diphosphatidylglycerol as the predominant phospholipids, the presence of MK-8(H₂) and MK-9(H₂) as the major menaquinones, the predominance of fatty acids ai-C_{15 : 0} and i-C_{15 : 0} and the DNA G+C content, also supported the affiliation of the isolate to the genus Kocuria. The low DNA–DNA relatedness with K. polaris DSM 14382^T (56·6 %) and K. rosea DSM 20447^T (15·5 %) in combination with phenotypic data show that strain YIM 70003^T should be classified as a novel species of the genus Kocuria. The name Kocuria aegyptia sp. nov. is proposed, with strain YIM 70003^T (=CCTCC AA203006^T=CIP 107966^T=KCTC 19010^T=DSM 17006^T) as the type strain.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 70003^T is DQ059617.

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