Involvement of hydrogen peroxide in repression of catalase in TMV-infected resistant tobacco.

@article{Yi2003InvolvementOH,
  title={Involvement of hydrogen peroxide in repression of catalase in TMV-infected resistant tobacco.},
  author={So-Young Yi and Seung-hun Yu and Doil Choi},
  journal={Molecules and cells},
  year={2003},
  volume={15 3},
  pages={
          364-9
        }
}
Catalases are ubiquitous, and play a role in plant defense against pathogens. We have reported that catalase mRNA and enzyme activity are repressed in the vicinity of hypersensitive tobacco lesions following TMV infection. We wished to identify the signals involved in this repression. Inoculation with TMV reduced catalase levels 26 to 28 h following infection, coincident with the known timing of endogenous salicylic acid (SA) accumulation. Application of SA caused a transient reduction in… CONTINUE READING

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