Nitrogen CycleNitrogenPlant LeavesPlant RootsPlants, Genetically ModifiedNitrogen FixationNitrogen CompoundsNitrificationDenitrificationPlant ProteinsCell CyclePlanctomycetalesQuaternary Ammonium CompoundsGenes, PlantNitrogen IsotopesCrenarchaeotaArchaeaPlant ShootsPlant ExtractsAmmoniaPhylogenyNitrite ReductasesBacteriaNitratesEcosystemPlants, MedicinalPlant DevelopmentDNA, PlantSeawaterSoil MicrobiologyNitritesSoilGenes, ArchaealOceans and SeasGeologic SedimentsDNA, ArchaealPlants, ToxicNitrous OxidePlant CellsOxidation-ReductionPlant StemsClimate ChangeAgricultureTreesArabidopsisGenome, PlantBiodiversityMolecular Sequence DataBlood Urea NitrogenNitrogen DioxidePlant StructuresPlants, EdibleOxidoreductasesRNA, Ribosomal, 16SMenstrual CyclePlant Growth RegulatorsReactive Nitrogen SpeciesArabidopsis ProteinsGenome, BacterialAmino Acid SequenceSequence Analysis, DNATobaccoCarbonBase SequenceCell Cycle ProteinsPlant ImmunityMutationBiomassSymbiosisNitrogen OxidesPlant EpidermisAngiospermsPII Nitrogen Regulatory ProteinsFertilizersModels, BiologicalBacterial ProteinsSpecies SpecificityPlant StomataSeedsPhotosynthesisCitric Acid CycleEstrous CycleZea maysPhenotypePlant TranspirationTime FactorsCulture MediaFlowersFabaceaeDNA, BacterialSequence AlignmentLycopersicon esculentumRoot Nodules, PlantPlant PoisoningPoaceaeFungiPlant Components, AerialSeedlingEscherichia coliChromosomes, Plant