MolybdenumSoilSoil MicrobiologyPteridinesCoenzymesSoil PollutantsMetalloproteinsTungstenXanthine DehydrogenaseNitrate ReductasesAldehyde OxidaseNitrate ReductaseSulfite OxidaseSulfurtransferasesPterinsXanthine OxidaseTungsten CompoundsOxidoreductases Acting on Sulfur Group DonorsNitrogenaseNitrate Reductase (NADH)SulfurAldehyde OxidoreductasesMolybdoferredoxinRhodobacter capsulatusOxidoreductasesElectron Spin Resonance SpectroscopyIsotopesMetal Metabolism, Inborn ErrorsFormate DehydrogenasesSoil Pollutants, RadioactiveIron-Sulfur ProteinsChloratesOxidation-ReductionAzotobacter vinelandiiXanthineNitrogen FixationAzotobacterBiodegradation, EnvironmentalHumic SubstancesSulfite DehydrogenaseMolecular Sequence DataNitrogenAgricultureTreesDesulfovibrio gigasRNA, Ribosomal, 16SBacteriaNitratesDithioniteFertilizersOrganometallic CompoundsEcosystemPhylogenyMetalloexopeptidasesTracheobiontaEscherichia coliSulfitesSpectrophotometryNitrobacterTrace ElementsDNA, RibosomalPlant RootsDNA, BacterialBacterial ProteinsSequence Analysis, DNACarbonChlorellaMilkSulfidesMetalsBiomassFormatesHydrogen-Ion ConcentrationMethanobacteriumMetals, HeavyIronOxygen IsotopesKineticsCatalysisCrops, Agricultural