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Saccharomonospora paurometabolica sp. nov., a moderately halophilic actinomycete isolated from soil in China

¹ The Key Laboratory for Microbial Resources of the Ministry of Education, P. R. China, Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan, China, 650091
² DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen, Mascheroder Weg 1b, 38124 Braunschweig, Germany

Correspondence
Cheng-Lin Jiang
lihxu{at}ynu.edu.cn or
liact{at}yahoo.com

A novel, moderately halophilic actinomycete, strain YIM 90007^T, was isolated from a soil sample collected from the Xinjiang Province, China, and characterized. The optimum growth temperature of the strain was between 35 and 37 °C and growth occurred optimally in 10 % (w/v) NaCl. The cell wall of strain YIM 90007^T contained meso-diaminopimelic acid. Whole-cell sugars were galactose, arabinose and ribose. The principal menaquinone was MK-9(H₄), while MK-9(H₂) was found in smaller amounts. The phospholipids were phosphatidylinositol, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and hydroxyphosphatidylethanolamine. The predominant cellular fatty acids were of the iso- and anteiso-branched and unbranched types; significant amounts of 2-hydroxy fatty acids were also found but 10-methyl-branched fatty acids were missing. The DNA G+C content of strain YIM 900007^T was 71 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed strain YIM 90007^T to be closely related to Saccharomonospora halophila (98·7 % similarity). DNA–DNA hybridization revealed a relatedness of 53·8 % between strain YIM 90007^T and S. halophila DSM 44411^T. Based on physiological and biochemical characteristics, phylogenetic analysis (based on 16S rRNA gene sequences) and DNA–DNA relatedness, it is concluded that strain YIM 90007^T represents a novel species of the genus Saccharomonospora, for which the name Saccharomonospora paurometabolica (type strain YIM 90007^T=CCTCC AA001018^T=CCRC 16315^T=DSM 44619^T) is proposed.

The GenBank/EMBL/DDBJ accession number for the 16S rDNA sequence of Saccharomonospora paurometabolica YIM 90007^T is AF540959.

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