| rhizobium selenireducens sp. nov.: a selenite-reducing alpha-proteobacteria isolated from a bioreactor. | a gram-negative, nonpigmented bacterium designated strain b1 was isolated from a laboratory bioreactor that reduced selenate to elemental red selenium (se(0)). 16s rrna gene-sequence alignment identified the isolate as a rhizobium sp. belonging to the rhizobium clade, which includes r. daejeonense, r. giardinii, r. undicola, r. larrymoorei, r. radiobacter, r. rubi, and r. vitis. r. radiobacter and r. rubi are its closest relatives as indicated by 16s rrna gene-sequence alignments, which differ f ... | 2007 | 17805926 |
| rhizobium rosettiformans sp. nov., isolated from a hexachlorocyclohexane dump site, and reclassification of blastobacter aggregatus hirsch and muller 1986 as rhizobium aggregatum comb. nov. | a gram-negative, rod-shaped, motile, aerobic bacterial strain, w3(t), was isolated from hexachlorocyclohexane (hch)-contaminated groundwater from lucknow, india, and its taxonomic position was determined using a polyphasic approach. strain w3(t) shared highest 16s rrna gene sequence similarity of 97.8 % with rhizobium selenitireducens b1(t), followed by rhizobium daejeonense l61(t) (97.7 %), rhizobium radiobacter atcc 19358(t) (97.5 %) and blastobacter aggregatus ifam 1003(t) (97.2 %). strain w3 ... | 2011 | 20584817 |
| a rhizobium selenitireducens protein showing selenite reductase activity. | biobarriers remove, via precipitation, the metalloid selenite (seo₃⁻²) from groundwater; a process that involves the biological reduction of soluble seo₃⁻² to insoluble elemental red selenium (se⁰). the enzymes associated with this reduction process are poorly understood. in rhizobium selenitireducens at least two enzymes are potentially involved; one, a nitrite reductase reduces seo₃⁻² to se⁰ but another protein may also be involved which is investigated in this study. proteins from r. seleniti ... | 2014 | 24474405 |
| an arsenate-reducing and alkane-metabolizing novel bacterium, rhizobium arsenicireducens sp. nov., isolated from arsenic-rich groundwater. | a novel arsenic (as)-resistant, arsenate-respiring, alkane-metabolizing bacterium kas 5-22(t), isolated from as-rich groundwater of west bengal was characterized by physiological and genomic properties. cells of strain kas 5-22(t) were gram-stain-negative, rod-shaped, motile, and facultative anaerobic. growth occurred at optimum of ph 6.0-7.0, temperature 30 °c. 16s rrna gene affiliated the strain kas 5-22(t) to the genus rhizobium showing maximum similarity (98.4 %) with the type strain of rhiz ... | 2017 | 27663709 |
| characterization of rhizobium naphthalenivorans sp. nov. with special emphasis on aromatic compound degradation and multilocus sequence analysis of housekeeping genes. | three strains of aerobic chemoorganotrophic naphthalene-degrading bacteria (designated tsy03b(t), tsy04, and tsw01) isolated from sediment of a polychlorinated-dioxin-transforming microcosm were characterized. these strains had gram-negative-stained, rod-shaped cells measuring 0.6‒0.9 μm in width and 1.2‒3.0 μm in length and were motile by means of peritrichous flagella. naphthalene was utilized as the sole carbon and energy source, and the transcription of a putative aromatic-ring hydroxylating ... | 2012 | 22878739 |