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Proposal of Yaniaceae fam. nov. and Yania flava sp. nov. and emended description of the genus Yania

Wen-Jun Li¹, Peter Schumann², Yu-Qin Zhang^1,, Ping Xu¹, Guo-Zhong Chen¹, Li-Hua Xu¹, Erko Stackebrandt² and Cheng-Lin Jiang¹

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

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn
Cheng-Lin Jiang
lihxu{at}ynu.edu.cn

A coccoid actinobacterium strain (designated YIM 70178^T) was isolated from a soil sample collected in Qinghai Province, China. The isolate grew well with an optimum salt concentration of 10–15 % (KCl, w/v) but scarcely or not at all without salt. The cell-wall peptidoglycan type was A4, L-lys–gly–L-Glu. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, an unknown phospholipid and an unknown glycolipid. The predominant menaquinones were MK-8 and MK-9. The major fatty acid was anteiso-C_{15 : 0}. The DNA G+C content was 57·9 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM 70178^T was most closely related to the type strain of Yania halotolerans. DNA–DNA hybridization and comparison of physiological and chemotaxonomic characteristics demonstrated that strain YIM 70178^T was different from Yania halotolerans. The name Yania flava sp. nov. is proposed, with strain YIM 70178^T (=DSM 16377^T=KCTC 19047^T) as the type strain. Based on the phenotypic characteristics and phylogenetic position, as determined by 16S rRNA gene analysis and 16S rRNA signature nucleotide data, the genus description of Yania is therefore emended and strains YIM 70085^T and YIM 70178^T represent a novel family of the suborder Micrococcineae, for which the name Yaniaceae fam. nov. is proposed.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of Yania flava YIM 70178^T is AY684123.

A detailed phylogenetic tree based on 16S rRNA gene sequences displaying the position of Yania flava YIM 70178^T, Yania halotolerans YIM 70085^T and related taxa in the suborder Micrococcineae is available as supplementary material in IJSEM Online.

Present address: Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, P. R. China.

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