Abstract
Harpinpss, a pathogenic protein encoded by hrpZ in the hrp gene cluster of Pseudomonas syringae pv. syringae, induces the hypersensitive response (HR) in tobacco (Nicotiana tabacum L. cv. Xanthi). An increase in peroxidase activity, lignin content and salicylic acid was observed during the HR elicited by harpin. The increase in anionic, moderately anionic and cationic peroxidase isozymes is positively correlated with the HR in tobacco. In addition, the increase of the anionic peroxidase isozyme (pI 3.5) is correlated with a rise of the transcript of the encoding gene.
Published Version
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