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Klebsiella alba sp nov., a novel pesticide-tolerant bacterium from a heavily polluted environment

文献类型： 外文期刊

作者： Xu, Junfeng 1 ; Li, Wenjun 2 ; Chen, Xiaoyun 1 ; Zhou, Yu 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Standard Agr Prod, Hangzhou 310021, Zhejiang, Peoples R China

2.Yunnan Univ, Key Lab Microbial Resources, Minist Educ, Kunming 650091, Yunnan, Peoples R China

3.Yunnan Univ, Lab Conservat & Utilizat Bioresources, Yunnan Inst Microbiol, Kunming 650091, Yunnan, Peoples R China

关键词： Klebsiella alba;polluted environment;polyphasic taxonomy;rpoB gene;16S rRNA gene

期刊名称：JOURNAL OF GENERAL AND APPLIED MICROBIOLOGY （ 影响因子：1.452； 五年影响因子：1.479 ）

ISSN： 0022-1260

年卷期： 2010 年 56 卷 3 期

页码：

收录情况： SCI

摘要： A novel Gram-negative, aerobic, rod-shaped and pesticide (chlorpyrifos and atrazine) tolerant strain, designated CW-D 3(T), was isolated from a heavily polluted soil sample in Jiangsu Province, China. The strain could tolerate about 800 mu g.ml(-1) atrazine or chlorpyrifos when added in TYB medium. A polyphasic taxonomy including phylogenetic and phenotypic analysis was performed on the new isolate. Phylogenetic analysis and chemotaxonomic characteristics revealed that strain CW-D 3(T) belongs to the genus Klebsiella. Its closest phylogenetic neighbors were K. singaporensis (strain LX3(T)), three subspecies of K. pneumoniae (strains ATCC 13883(T), ATCC 13884(T) and ATCC 11296(T)) and K. granulomatis, according to 16S rRNA and rpoB gene analysis. The 16S rRNA gene sequence similarity was about 94.8-97.6% and the rpoB gene sequence similarity was about 96.8-98.6% to its phylogenetic neighbors. Strain CW-D 3(T) also showed low DNA-DNA reassociationalues (less than 21%) with respect to the three subspecies of K. pneumoniae and Klebsiella singaporensis, its major fatty acids were C-14:0, C-16:0, c-C-17:0 and c-C-19:0 omega 8c. The G+C content of the DNA was 58.3 mol%. Phylogenetic and phenotypic results supported the assignment of CW-D 3(T) as a novel species of the genus Klebsiella, for which the name Klebsiella alba sp. nov. is proposed. The type strain is CW-D 3(T) (=LMG 24441(T)=KCTC 12878(T) =CCTCC AB 206144(T)).

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