Figure 7. Lead accumulation in roots and shoots of wild-type and knockout mutant seedlings of A. thaliana.

Seedlings were collected after 13 days of culture on agar plates with or without 40 µM of Pb(NO₃)₂. (A) Atmt2a T-DNA mutant analysis. (B) Athma4 T-DNA mutant analysis. All results are the average value (± SE) of three independent replicates. For the roots and leaves separately, the letters represent statistically homogenous subgroups using LSD post hoc test at a α = 0.01 significance level.