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Int J Syst Evol Microbiol 59 (2009), 2025-2032; DOI  10.1099/ijs.0.007344-0
© 2009 International Union of Microbiological Societies

Zhihengliuella alba sp. nov., and emended description of the genus Zhihengliuella

Shu-Kun Tang1, Yun Wang1,2, Yun Chen1, Kai Lou2, Lan-Lan Cao1,2, Li-Hua Xu1 and Wen-Jun Li1

1 The Key Laboratory for Microbial Resources of the Ministry of Education, and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
2 Xinjiang Institute of Microbiology, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, PR China

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn
or
liact{at}hotmail.com

A Gram-positive, non-motile, white-pigmented, short rod actinobacterium, designated YIM 90734T, was isolated from a saline soil sample collected from Ganjiahu Suosuo Forest National Nature Reserve in Xinjiang province, north-west China, and its taxonomic position was investigated by using a polyphasic approach. Strain YIM 90734T grew optimally at 28–37 °C and pH 6.0–8.0 and in 5 % (w/v) NaCl. The peptidoglycan type was A4{alpha}, L-Lys–L-Ala–L-Glu and tyvelose and mannose were the major cell-wall sugars. The predominant menaquinones were MK-10 and MK-9. Major cellular fatty acids (>10 % of total) were anteiso-C15 : 0 and anteiso-C17 : 0. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, one unknown phospholipid and two unknown glycolipids. The DNA G+C content was 70.3 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM 90734T belonged to the genus Zhihengliuella. The 16S rRNA gene sequence similarity between strain YIM 90734T and the type strain of the only recognized Zhihengliuella species, Zhihengliuella halotolerans, was 97.7 %. However, the level of DNA–DNA relatedness of the two strains was 41.4 %. The DNA–DNA relatedness data and differential phenotypic properties, together with the phylogenetic distinctiveness, demonstrated that strain YIM 90734T could be differentiated from Z. halotolerans. On the basis of the data presented, strain YIM 90734T is considered to represent a novel species of the genus Zhihengliuella, for which the name Zhihengliuella alba sp. nov. is proposed. The type strain is YIM 90734T (=KCTC 19375T=DSM 21143T). The description of the genus Zhihengliuella has also been emended.

Abbreviations: OPA, o-phthalaldehyde; PMP, 1-phenyl-3-methyl-5-pyrazolone

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain YIM 90734T is EU847536.

Chromatograms of OPA- and PMP-derivatization samples and a table showing the cell-wall suger compositions of strain YIM 90734T and Zhihengliuella halotolerans Yim 70185T are available as supplementary material with the online version of this paper.






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