Nitrogen CycleNitrogen FixationNitrogen CompoundsNitrificationDenitrificationNitrogenCell CyclePlanctomycetalesQuaternary Ammonium CompoundsNitrogen IsotopesCrenarchaeotaArchaeaAmmoniaNitrite ReductasesNitratesNitritesSeawaterGenes, ArchaealOceans and SeasBacteriaNitrous OxideEcosystemDNA, ArchaealSoil MicrobiologyGeologic SedimentsSoilClimate ChangeOxidation-ReductionPhylogenyAgricultureBlood Urea NitrogenNitrogen DioxideTreesMenstrual CycleBiodiversityReactive Nitrogen SpeciesOxidoreductasesMolecular Sequence DataCell Cycle ProteinsRNA, Ribosomal, 16SNitrogen OxidesGenome, BacterialPII Nitrogen Regulatory ProteinsSequence Analysis, DNACarbonEstrous CycleFertilizersCitric Acid CycleGlutamate-Ammonia Ligase