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sphingomonas azotifigens sp. nov., a nitrogen-fixing bacterium isolated from the roots of oryza sativa.three yellow-pigmented strains associated with rice plants were characterized by using a polyphasic approach. the nitrogen-fixing abilities of these strains were confirmed by acetylene reduction assay and nifh gene detection. the three strains were found to be very closely related, with 99.9 % 16s rrna gene sequence similarity and greater than 70 % dna-dna hybridization values, suggesting that the three strains represent a single species. 16s rrna gene sequence analysis indicated that the strain ...200616585711
sphingomonas molluscorum sp. nov., a novel marine isolate with antimicrobial activity.an aerobic, gram-negative, yellow-pigmented, non-motile bacterium, designated strain kmm 3882t, was isolated from a marine bivalve (anadara broughtoni) collected from peter the great bay, sea of japan, and was subjected to phenotypic and phylogenetic analyses. strain kmm 3882t was found to exert a remarkable inhibitory activity against a number of gram-positive micro-organisms. phylogenetic analysis based on 16s rrna gene sequences placed strain kmm 3882t within the genus sphingomonas, as an ind ...200717267979
occurrence and diversity of nitrogen-fixing sphingomonas bacteria associated with rice plants grown in brazil.so far, the occurrence of nitrogen-fixing sphingomonas bacteria has been restricted to three strains of sphingomonas azotifigens. in this work, a group of 46 sphingomonas-like isolates, which originated from two rice varieties grown in two soils in brazil, were characterized based on morphological, physiological and genetic analyses. the pcr genus specifically applied indicated that all 46 isolates belonged to the sphingomonas genus and confirmed the results based on the yellow pigment of the co ...200919222576
sphingomonas sanxanigenens sp. nov., isolated from soil.strain nx02(t), a gram-negative, non-spore-forming, rod-shaped bacterium, was isolated from soil, and its taxonomic position was investigated using a polyphasic approach. chemotaxonomic analysis revealed that strain nx02(t) possessed q-10 as the predominant ubiquinone, sym-homospermidine as the major polyamine and c(18 : 1)omega7c, c(16 : 0) and c(14 : 0) 2-oh as the major fatty acids. the main polar lipids were sphingoglycolipid, phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol ...200919329595
sphingomonas japonica sp. nov., isolated from the marine crustacean paralithodes camtschatica.a sphingomonas-like bacterium, strain kc7(t), was isolated from a marine crustacean specimen obtained from the sea of japan and subjected to a polyphasic study. comparative 16s rrna gene sequence analysis positioned the novel strain in the genus sphingomonas as an independent lineage adjacent to a subclade containing sphingomonas trueperi lmg 2142(t), sphingomonas pituitosa ediv(t) and sphingomonas azotifigens nbrc 15497(t). strain kc7(t) shared highest 16s rrna gene sequence similarity (96.1 %) ...200919406815
sphingomonas aerophila sp. nov. and sphingomonas naasensis sp. nov., isolated from air and soil, respectively.two strains, designated 5413j-26(t) and kis18-15(t), were isolated from the air and forest soil, respectively, in south korea. cells of the two strains were gram-stain-negative, aerobic, polar-flagellated and rod-shaped. according to the phylogenetic tree, strains 5413j-26(t) and kis18-15(t) fell into the cluster of sphingomonas sensu stricto. strain 5413j-26(t) showed the highest sequence similarities with sphingomonas trueperi lmg 2142(t) (96.6%), sphingomonas molluscorum kmm 3882(t) (96.5%), ...201424425812
description of a gram-negative bacterium, sphingomonas guangdongensis sp. nov.a gram-stain-negative bacterial strain, designated 9nm-8t, was isolated from an abandoned lead-zinc ore in mei county, meizhou, guangdong province, pr china. the isolate was orange-pigmented, aerobic, oxidase- and catalase-positive, motile with lophotrichous flagella and rod-shaped. strain 9nm-8t grew optimally at ph 7.0 and 30 °c and in the absence of nacl on r2a agar. phylogenetic analysis based on 16s rrna gene sequences showed that strain 9nm-8t belongs to the genus sphingomonas, with highes ...201424523446
colonization and beneficial effects on annual ryegrass by mixed inoculation with plant growth promoting bacteria.multi-strain inoculants have increased potential to accomplish a diversity of plant needs, mainly attributed to its multi-functionality. this work evaluated the ability of a mixture of three bacteria to colonize and induce a beneficial response on the pasture crop annual ryegrass. pseudomonas g1dc10 and paenibacillus g3ac9 were previously isolated from annual ryegrass and were selected for their ability to perform multiple functions related to plant growth promotion. sphingomonas azotifigens dsm ...201728285661
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