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Functional Plant Biology Functional Plant Biology Society
Plant function and evolutionary biology
RESEARCH ARTICLE

HarpinPSS-induced peroxidase and lignin accumulation in tobacco during the hypersensitive response

Wei-Chang Wang and Zin-Huang Liu

Australian Journal of Plant Physiology 26(3) 265 - 272
Published: 1999

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.

Keywords: hypersensitive response; lignification; Nicotiana tabacum L; peroxidase.

https://doi.org/10.1071/PP98130

© CSIRO 1999

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