. 2005 Nov;139(3):1411–1420. doi: 10.1104/pp.105.067561

Table II.

Kinetic parameters for low-affinity root Mn²⁺ influx in 10-d-old plants of the barley genotypes Antonia (Mn inefficient) and Vanessa (Mn efficient)

Values for V_max and the apparent K_m were obtained by fitting calculated data of root Mn influx at external Mn²⁺ concentrations ranging from 10 nm to 655 μm to the Michaelis-Menten equation using nonlinear regression analysis (Fig. 4). Plant characteristics are as in Table I. Values with the same superscript letter were not significantly different between genotypes. The results are presented as average ± 95% confidence limits of four independent regressions (n = 4).

LATS	V_max	K_m	Regression Coefficient
	μmol Mn g ⁻¹ DW h⁻¹	μm	R²
Antonia	9.1 ± 1.4^a	109 ± 50^a	0.980
Vanessa	8.5 ± 0.5^a	79 ± 15^a	0.990