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RSA of Arabidopsis in response to elevated heavy metal supplies and low Fe. Seedlings were exposed to different concentrations of Fe (A), Zn (B), Co (C), Ni (D), Cd (E), or Mn (F). Representative plants for each treatment are shown; n = 30 to 40. Seedlings were precultured for 7 d in one-half-strength MS medium and then transferred to one-half-strength MS medium (control) or one-half-strength MS medium containing the indicated concentration of each metal for a further 10 d.
