Abstract
A novel strain, designated Y1A-10 4-9-1(T), with Gram-stain-positive and rod-shaped cells, was isolated from paddy soil in Yingtan, Jiangxi, China. Cells were 0.15-0.2 mu m wide and 1.5-3.3 mu m long. The optimal growth temperature was 30 degrees C and the optimal pH was 7.0. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the novel strain is closely related to Propionicimonas paludicola JCM 11933(T) (98.57 %). The genomic DNA G+C content was 63.9 mol%. The predominant menaquinone was MK-9(H-4) and meso-diaminopimelic acid was present in the cell-wall peptidoglycan layer. The major polar lipids were diphosphatidylglycerol, one unidentified phospholipid and two unidentified lipids. The dominant cellular fatty acids detected were anteiso-C-15( : 0) and iso-C-16 : 0. The phylogenetic and phenotypic results supported that strain Y1A-10 4-9-1(T) is a novel species of the genus Propionicimonas, for which the name Propionicimonas ferrireducens sp. nov. is proposed. The type strain is Y1A-10 4-9-1(T) (=CCTCC AB 2016249(T)=KCTC 15566(T)=LMG 29810(T)).