Hydrogen peroxide generation by the pepper extracellular peroxidase CaPO2 activates local and systemic cell death and defense response to bacterial pathogens.

@article{Choi2007HydrogenPG,
  title={Hydrogen peroxide generation by the pepper extracellular peroxidase CaPO2 activates local and systemic cell death and defense response to bacterial pathogens.},
  author={Hyong Woo Choi and Young Jin Kim and Sung Chul Lee and Jeum Kyu Hong and Byung Kook Hwang},
  journal={Plant physiology},
  year={2007},
  volume={145 3},
  pages={890-904}
}
Reactive oxygen species (ROS) are responsible for mediating cellular defense responses in plants. Controversy has existed over the origin of ROS in plant defense. We have isolated a novel extracellular peroxidase gene, CaPO2, from pepper (Capsicum annuum). Local or systemic expression of CaPO2 is induced in pepper by avirulent Xanthomonas campestris pv vesicatoria (Xcv) infection. We examined the function of the CaPO2 gene in plant defense using the virus-induced gene silencing technique and… CONTINUE READING