Arabidopsis thaliana phytochelatin synthase 2 is constitutively active in vivo and can rescue the growth defect of the PCS1-deficient cad1-3 mutant on Cd-contaminated soil.

Differences between the two transgenic lines were not significant, whereas already at d 21 the differences between wild-type, cad1-3 mutant, and the overexpression lines were highly significant with P <0.001 for all comparisons.

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