A Gram-staining-negative, aerobic, rod-shaped bacterium (CF5-1(T)) was isolated from Hongshan Iron Mine, Daye City, Hubei province, China. The major cellular fatty acids (>10%) were iso-C(16:0), iso-C(15:0), C(16:1)ω7c alcohol and iso-C(17:1)ω9c. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The major respiratory quinone was Q-8. The genomic DNA G+C content was 70.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain CF5-1(T) was most closely related to Arenimonas malthae (95.3% gene sequence similarity), Arenimonas oryziterrae (94.7%), Arenimonas donghaensis (94.6%) and Arenimonas composti (94.5%). A taxonomic study using a polyphasic approach showed that strain CF5-1(T) represents a novel species of the genus Arenimonas, for which the name Arenimonas metalli sp. nov. is proposed. The type strain is CF5-1(T) ( = CGMCC 1.10787(T) = KCTC 23460(T) = CCTCC AB 2010449(T)).
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Chen et al. (2011) studied this question.
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