Table IV.

IAA transport and BA diffusion in ecotype Columbia and mutant eir1 roots

Transport AssayColumbiaeir1PValues4-a
−NPA+NPAPvalueb−NPA+NPAPvalueb−NPA+NPA
Basipetal IAA6.18 ± 0.464.02 ± 0.570.00424.40 ± 0.553.57 ± 0.530.150.0120.29
Basipetal BA0.43 ± 0.040.57 ± 0.060.0510.61 ± 0.080.55 ± 0.090.630.0490.85
Acropetal IAA7.96 ± 0.744.68 ± 0.410.000377.39 ± 0.584.64 ± 0.500.000790.280.47
Acropetal BA0.81 ± 0.060.81 ± 0.060.980.98 ± 0.100.79 ± 0.090.150.290.84

The picomoles of IAA or BA transported were from at least two separate experiments and are the average and sd from between eight and 12 plants, accept for acropetal BA in eir1, which was obtained for 24 plants.

    • F4-a P values (Columbia versuseir1) were obtained by Student's t test, as discussed in “Materials and Methods.”  bPvalues (−NPA versus +NPA) were obtained by Student's ttest.