Roseomonas alkaliterrae sp nov., isolated from an alkali geothermal soil sample in Tengchong, Yunnan, south-west China

被引:25
作者
Dong, Lei [1 ,2 ]
Ming, Hong [1 ,2 ,3 ]
Yin, Yi-Rui [1 ,2 ]
Duan, Yan-Yan [4 ]
Zhou, En-Min [1 ,2 ]
Nie, Guo-Xing [4 ]
Feng, Hui-Geng [3 ]
Liu, Lan [1 ,2 ]
Li, Wen-Jun [1 ,2 ]
机构
[1] Yunnan Univ, Minist Educ, Key Lab Microbial Divers Southwest China, Kunming 650091, Peoples R China
[2] Yunnan Univ, Lab Conservat & Utilizat Bioresources, Kunming 650091, Peoples R China
[3] Xinxiang Med Univ, Coll Life Sci & Technol, Xinxiang 453003, Peoples R China
[4] Henan Normal Univ, Coll Fisheries, Xinxiang 453007, Peoples R China
来源
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY | 2014年 / 105卷 / 05期
基金
美国国家科学基金会;
关键词
Roseomonas alkaliterrae sp nov; 16S rRNA gene; Polyphasic taxonomy; Hehua hot spring; Tengchong; DEOXYRIBONUCLEIC-ACID; EMENDED DESCRIPTION; CLASSIFICATION; HYBRIDIZATION; MENAQUINONES; WELLS;
D O I
10.1007/s10482-014-0144-1
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
An alkalitolerant, thermotolerant and Gram-stain negative bacterium, designated strain YIM 78007(T), was isolated from an alkaline geothermal soil sample from Hehua hot spring, Tengchong, Yunnan province, south-west China. Cells of strain YIM 78007(T) were observed to be aerobic and short rod-shaped. The colonies were observed to be orange-red, convex and circular. 16S rRNA gene sequence-based phylogenetic analysis showed that strain YIM 78007(T) clustered with members of the genus Roseomonas (with similarities from 97.2 to 92.2 %). Optimal growth of strain YIM 78007 occurs at 40-50 A degrees C and pH 8.0-10.0. The predominant ubiquinone was identified as Q-10 and the major fatty acids were identified as C-18:1 omega 7c and C-16:0. The polar lipids were identified as diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, two unidentified aminolipids and one unknown phospholipid. The G + C content of the genomic DNA was determined to be 63 mol %. The levels of DNA-DNA hybridization relatedness between strain YIM 78007(T) and its closet neighbours (Roseomonas lacus JCM 13283(T) and Roseomonas terrae JCM 14592(T)) were well below the threshold required for the proposal of a novel species. The results of physiological and biochemical characteristics, the phylogenetic analysis, as well as low DNA-DNA hybridization values, allowed the phenotypic and genotypic differentiation of strain YIM 78007(T) from its closest phylogenetic neighbours. Therefore, strain YIM 78007(T) is considered to represent a novel species of the genus Roseomonas, for which the name Roseomonas alkaliterrae sp. nov. is proposed. The type strain is YIM 78007(T) (=BCRC 80644(T) = JCM 19656(T)).
引用
收藏
页码:899 / 905
页数:7
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