Negadavirga shengliensis gen. nov., sp. nov., a novel member of the family Cyclobacteriaceae isolated from oil-contaminated saline soil
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- 作者：Bing Hu ; Qian Yang ; Man Cai ; Yue-Qin Tang ; Gui-Fang Zhao…
- 关键词：Negadavirga shengliensis gen. nov. ; sp. nov. ; Oil ; contaminated saline soil ; Polyphasic taxonomy ; 16S rRNA gene sequences
- 刊名：Antonie van Leeuwenhoek
- 出版年：2015
- 出版时间：March 2015
- 年：2015
- 卷：107
- 期：3
- 页码：663-673
- 全文大小：820 KB
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- 刊物主题：Life Sciences
Microbiology
Medical Microbiology
Plant Sciences
Soil Science and Conservation- 出版者：Springer Netherlands
- ISSN：1572-9699
文摘
Four novel Gram-stain-negative, rod-shaped, and non-motile bacterial strains, SLG210-21T, SLG210-4, SLG210-5 and SLG210-14, were isolated from oil-contaminated saline soil in Shengli Oilfield, China. Growth were observed at 25-2?°C (optimum 37?°C), in the presence of 0-0?% (w/v) NaCl (optimum 0-?%) and at pH 4.0-0.0 (optimum pH 7.6-.6). All the strains were positive for catalase and α, β-galactosidase activities and nitrogen reduction, and negative for oxidase activity, glucose fermentation and hydrolysis of agar, starch, gelatin, Tween 40, 60 and 80. The DNA G+C contents of the four strains were 41.3-3.0?mol% and the predominant respiratory quinones were all menaquinone-7. The major fatty acids were iso-C15:0, anteiso-C15:0, summed feature 3 (C16:1 ω7c and/or C16:1 ω6c), C16:1 ω5c and summed feature 9 (iso-C17:1 ω9c and/or 10-methyl C16:0), while the polar lipids consisted of phosphatidylcholine, phosphatidylethanolamine, glycolipid, two unidentified phospholipids and two unidentified amino lipids. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the four strains clustered together to form a stable branch in the family Cyclobacteriaceae, and were most closely related to the genera Cyclobacterium and Echinicola with the 16S rRNA gene sequence similarities being 88.6-0.3 and 89.6-1.4?%, respectively. DNA–DNA hybridization between SLG210-21T and the other three strains showed the relatedness of 93.8?±?4.5, 96.2?±?4.2 and 82.3?±?4.8?%, respectively. Based on the polyphasic analysis, a novel species in a new genus, Negadavirga shengliensis gen. nov., sp. nov., is proposed with SLG210-21T (=LMG 27734T?=?CGMCC1.12768T) as the type strain.