| identification of genes unique to mo-independent nitrogenase systems in diverse diazotrophs. | a number of nitrogen-fixing bacteria were screened using pcr for genes (vnfg and anfg) unique to the v-containing nitrogenase (vnf) and the fe-only nitrogenase (anf) systems. products with sequences similar to that of vnfg were obtained from azotobacter paspali and azotobacter salinestris genomic dnas, and products with sequences similar to that of anfg were obtained from azomonas macrocytogenes, rhodospirillum rubrum, and azotobacter paspali dnas. phylogenetic analysis of the deduced amino acid ... | 1999 | 10420583 |
| nitrous oxide production by organisms other than nitrifiers or denitrifiers. | heterotrophic bacteria, yeasts, fungi, plants, and animal breath were investigated as possible sources of n(2)o. microbes found to produce n(2)o from no(3) but not consume it were: (i) all of the nitrate-respiring bacteria examined, including strains of escherichia, serratia, klebsiella, enterobacter, erwinia, and bacillus; (ii) one of the assimilatory nitrate-reducing bacteria examined, azotobacter vinelandii, but not azotobacter macrocytogenes or acinetobacter sp.; and (iii) some but not all o ... | 1982 | 16346152 |
| distribution of alginate gene sequences in the pseudomonas rrna homology group i-azomonas-azotobacter lineage of superfamily b procaryotes. | chromosomal dna from group i pseudomonas species, azotobacter vinelandii, azomonas macrocytogens, xanthomonas campestris, serpens flexibilis, and three enteric bacteria was screened for sequences homologous to four pseudomonas aeruginosa alginate (alg) genes (alga, pmm, algd, and algr1). all the group i pseudomonas species tested (including alginate producers and nonproducers) contained sequences homologous to all the p. aeruginosa alg genes used as probes, with the exception of p. stutzeri, whi ... | 1990 | 1689562 |
| taxonomic relationship of some members of azotobacteraceae based on their protein profiles. | analysis of protein profiles of the members of azotobacteraceae suggests that the genus azotobacter consists of a heterogeneous group of bacteria, of which azotobacter beijerinekii should possibly be separated to a new genus. azomonas agilis and azomonas macrocytogenes are only 26 percent related to each other. | 1992 | 1527705 |
| comparative cytochrome oxidase and superoxide dismutase analyses on strains of azotobacter vinelandii and other related free-living nitrogen-fixing bacteria. | quantitative n,n,n',n'-tetramethyl-p-phenylenediamine (tmpd) oxidase and superoxide dismutase (sod) analyses were performed on representative organisms of the family azotobacteraceae. azotobacter vinelandii, azotobacter chroococcum, azotobacter paspali, and derxia gummosa exhibited high quantitative tmpd oxidase activities, and their extracts possessed very active and electrophoretically homogeneous (single gel band) fe-type sods. azomonas macrocytogenes extracts had similar single fe-type sods, ... | 1984 | 16346548 |
| the three-dimensional structure of the gallium complex of azoverdin, a siderophore of azomonas macrocytogenes atcc 12334, determined by nmr using residual dipolar coupling constants. | in iron-deficient conditions, azomonas macrocytogenes atcc 12334 excretes a fluorescent siderophore called azoverdin, which is composed of a six-amino-acid peptide chain linked to a chromophore. azoverdin chelates iron(iii) very strongly, solubilizing it and transporting it back into the cells using an outer-membrane receptor. this compound is related to the pyoverdins, the peptidic siderophores of pseudomonas, but differs in the site on the chromophore at which the peptide is covalently linked. ... | 2002 | 12369840 |
| probable synonymy of the nitrogen-fixing genus azotobacter and the genus pseudomonas. | the relationships of the genus azotobacter, azomonas macrocytogenes and the genus pseudomonas were revealed by comparative analysis of partial 16s rrna and atpd, cara and reca gene sequences and as concatenated nucleotide and peptide sequences. sequence similarities of azotobacter species and azomonas macrocytogenes indicated that these may be considered to be synonyms at the molecular level. in addition, these species show an intimate relationship with species of pseudomonas, especially p. aeru ... | 2007 | 18048745 |
| nitrogen assimilation: optimization of n-labelled azoverdin production by azomonas macrocytogenes atcc 12334. | the effects of various nitrogen sources and of the cultivation time on the biosynthesis of n-labelled azoverdin were studied in batch cultures of azomonas macrocytogenes atcc 12334. growth for 48 h in the presence of ammonium sulfate (0.2 g/liter) resulted in 95% labelling of azoverdin with n. a growth-related synthesis of azoverdin, under both nitrogen-fixing and ammonium-assimilating conditions, was observed. | 1994 | 16349470 |