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AgriculturePlant BiologyPlant SciencesMicrobial EcologyPlant-microbe InteractionsSoil MicrobiologyRhizosphere BiologyRhizosphere ColonizationRhizosphere InteractionsRhizosphere MicrobiologySymbiosisSymbiotic Nitrogen FixationLegume-rhizobium SymbiosisPlant-microbe SymbiosisRhizobium-legume Symbiosis