Redinbaugh, M. G. Glutamine Synthetase and Ferredoxin-Dependent Glutamate Synthase Expression in the Maize (Zea mays) Root Primary Response to Nitrate (Evidence for an Organ-Specific Response). [electronic resource] - Plant physiology Apr 1993 - 1249-1255 p. digital Publication Type: Journal Article ISSN: 1532-2548 Standard No.: 10.1104/pp.101.4.1249 doi