Glass, Anthony D.M.; Britto, David R.; Kaiser, B; Kinghorn, J; Kronzucker, Herbert; Kumar, Anshuman; Okamoto, Marnoru; Rawat, S; Siddiqi, M; Unkles, S; Vidmar, Joseph
Inorganic nitrogen concentrations in soil solutions vary across several orders of magnitude among different soils and as a result of seasonal changes. In order to respond to this heterogeneity, plants have evolved mechanisms to regulate NO3- and NH4+ influx. In addition, efflux analysis using13N has revealed that there is a co-ordinated regulation of all component fluxes within the root, including biochemical fluxes. Physiological studies have demonstrated the presence of two high-affinity...[Show more]
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