Increase in permeability to oxygen and in oxygen uptake of soybean nodules under limiting phosphorus nutrition [Bradyrhizobium japonicum, nutrient deficiency]

absorption de substances nutritives acetileno acetylene bradyrhizobium cell respiration disponibilidad de nutrientes enzymic activity fixation de l'azote fosforo glycine max nitrogen content nitrogen fixation nitrogen metabolism nitrogenasa nitrogenase nutrient availability nutrient uptake nutrition des plantes oxygen permeabilidad permeability phosphore phosphorus plant nutrition racine respiration cellulaire root nodulation roots simbiosis symbiose symbiosis teneur en azote