Abstract:
:A thallium-tolerant, aerobic bacterium, designated strain SK200a-9(T), isolated from a garden soil sample was characterized using a polyphasic approach. Comparative analysis of 16S rRNA gene sequences revealed that strain SK200a-9(T) was affiliated with an uncultivated lineage within the Alphaproteobacteria and the nearest cultivated neighbours were bacteria in genera in the family Methylocystaceae (93.3-94.4% 16S rRNA gene sequence similarity) and the family Beijerinckiaceae (92.3-93.1%) in the order Rhizobiales. Cells of strain SK200a-9(T) were Gram-stain-negative, non-motile, non-spore-forming, poly-β-hydroxybutyrate-accumulating rods. The strain was a chemo-organotrophic bacterium, which was incapable of growth on C1 substrates. Catalase and oxidase were positive. Atmospheric nitrogen fixation and nitrate reduction were negative. The strain contained ubiquinone Q-10 and cellular fatty acids C18 : 1ω7c, C18 : 0, C16 : 1ω7c and C16 : 0 as predominant components. The major polar lipids were diphosphatidylglycerol, phosphatidylcholine, phosphatidylethanolamine and phosphatidylglycerol. The DNA G+C content was 64.8 mol%. On the basis of the information described above, strain SK200a-9(T) is considered to represent a novel species of a new genus in the order Rhizobiales, for which the name Alsobacter metallidurans gen. nov., sp. nov. is proposed. The type strain of Alsobacter metallidurans is SK200a-9(T) ( = NBRC 107718(T) = CGMCC 1.12214(T)).
journal_name
Int J Syst Evol Microbiolauthors
Bao Z,Sato Y,Fujimura R,Ohta Hdoi
10.1099/ijs.0.054783-0subject
Has Abstractpub_date
2014-03-01 00:00:00pages
775-780issue
Pt 3eissn
1466-5026issn
1466-5034journal_volume
64pub_type
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