Copper-mediated oxidative burst in Nicotiana tabacum L. cv. Bright Yellow 2 cell suspension cultures

  title={Copper-mediated oxidative burst in Nicotiana tabacum L. cv. Bright Yellow 2 cell suspension cultures},
  author={Tine Raeymaekers and Geert Potters and Han Asard and Yves Guisez and Nele Horemans},
 In cell suspension cultures of Nicotiana tabacum L. cv. Bright Yellow 2 (BY-2) a rapid and concentration-dependent accumulation of H2O2 is induced by excess concentrations of copper (up to 100 μM). This specific and early response towards copper stress was shown to be extracellular. Addition of 300 U of catalase per ml decreased the level of H2O2. Superoxide dismutase (5 U/ml) induced an increase in H2O2 production by 22.2%. This indicates that at least part of the H2O2 is produced by… CONTINUE READING
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