Azospirillum brasilenseAzospirillumGram-Negative Aerobic BacteriaGlutamate SynthaseNitrogen FixationPII Nitrogen Regulatory ProteinsFlocculationNitrogenaseDinitrogenase ReductaseSpirillumHydroxybutyratesPolyestersPlant RootsGene Expression Regulation, BacterialGenes, BacterialAtriplexTriticumQuaternary Ammonium CompoundsAmmoniaChemotaxisBacterial ProteinsGlutamate-Ammonia Ligase