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Kinetic parameters for net-nitrate uptake by roots and leaves
| Parameters* |
Roots |
Leaves |
||
|---|---|---|---|---|
| N-free | +Nitrate for 4 h | N-free | +Nitrate for 12 h | |
|
Km (mM) |
0.35 |
0.12 |
0.79 |
0.52 |
| Vmax (μmol NO3- g FW-1 h-1) | 2.04 | 11.52 | 0.48 | 1.12 |
*Calculated in the 0.05-0.5 mM concentration range. Values for Km and Vmax were obtained using the Lineweaver-Burk method (double reciprocal method) of data fitted to the Michaelis-Menten equation.
