biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 43:149-151, 2000 | DOI: 10.1023/A:1026583803876

Iron Mediated Nitrate Reductase Activity in Different Parts of Young Maize Seedlings

S. Pandey1
1 Department of Plant Science, M.J.P. Rohilkhand University, Bareilly-, India

Incubation of 5-d-old maize seedlings in the half-strength Hoagland's nutrient solution containing 10 mM KNO3 with FeCl3 or FeSO4 (0.5 or 2.0 mM) caused a significant increase in nitrate reductase (NR) activity and slightly increased total protein content in root, shoot and scutellum. In case of root, NADPH:NR activity was inhibited contrary to the NADH:NR activity. In spite of NR activity, nitrate uptake was inhibited from 13 to 37 % by the iron. The results presented demonstrate an isoform specific, organ specific, and to some extent salt specific responses of NR to iron.

Keywords: NADH:NR; NADPH:NR; Zea mays
Subjects: iron-mediated nitrate reductase; maize, different parts, nitrate reductase; nitrate reductase, iron mediated; root, nitrate reductase; scutellum, nitrate reductase; Zea mays

Published: March 1, 2000  Show citation

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Pandey, S. (2000). Iron Mediated Nitrate Reductase Activity in Different Parts of Young Maize Seedlings. Biologia plantarum, 43(1), 149-151. doi: 10.1023/A:1026583803876
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