文献类型： 外文期刊
作者： Li, Qin-Fen 1 ; Sun, Li-Na 2 ; Kwon, Soon-Wo 3 ; Chen, Qing 2 ; He, Jian 2 ; Li, Shun-Peng 2 ; Zhang, Jun 4 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Danzhou 571737, Peoples R China
2.Nanjing Agr Univ, Key Lab Microbiol Engn Agr Environm, Minist Agr, Nanjing 210095, Jiangsu, Peoples R China
3.RDA, KACC, Natl Agrobiodivers Ctr, Natl Acad Agr Sci, Suwon 441707, South Korea
4.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China
期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.747； 五年影响因子：2.889 ）
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收录情况： SCI
摘要： A Gram-reaction-negative, aerobic, motile, rod-shaped, arsenite [As(III)]-resistant bacterium, designated strain YW8(T), was isolated from agricultural soil. 16S rRNA gene sequence analysis showed over 97% sequence similarity to strains of the environmental species Xenophilus azovorans, Xenophilus aerolatus, Simplicispira metamorpha, Variovorax soli, and Xylophilus ampelinus. However, the phylogenetic tree indicated that strain YW8(T) formed a separate clade from Xenophilus azovorans. DNA DNA hybridization experiments showed that the DNA DNA relatedness values between strain YW8(T) and its closest phylogenetic neighbours were below 24.2-35.5%, which clearly separated the strain from these closely related species. The major cellular fatty acids of strain YW8(T) were C-16:0, C-17:0 cyclo, C-18:1 omega 7C, and summed feature 3(C-16:1 omega 6c and/or C-16:1 omega 7c). The genomic DNA G+C content was 69.3 mol%, and the major respiratory quinone was ubiquinone-8. The predominant polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, three unknown phospholipids, an unknown polar lipid and phosphatidylserine. The major polyamines were 2-hydroxyputrescine and putrescine. On the basis of morphological, physiological and biochemical characteristics, phylogenetic position, DNA DNA hybridization and chemotaxonomic data, strain YW8(T) is considered to represent a novel species of the genus Xenophilus, for which the name Xenophilus arseniciresistens sp. nov. is proposed; the type strain is YW8(T) (=CCTCC AB2012103(T)=KACC 16853(T))
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