Uptake of 3H-Thaxtomin by Wild-Type and txr1 Mutant Seedlings.
(A) Time-dependent uptake of 3H-thaxtomin by wild-type seedlings (closed symbols) and txr1 mutant seedlings (open symbols) in 2 μM thaxtomin.
(B) Concentration-dependent uptake of 3H-thaxtomin by wild-type seedlings (closed symbols) and txr1 mutant seedlings (open symbols). Seedlings were incubated in toxin for 12 h at the indicated concentrations.