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Keyword - Pathogenesis-related protein (KW-0568)

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Protein induced in several plant species when they are infected by viruses, viroids, fungi or bacteria. The occurrence of these proteins is not pathogen-specific, but determined by the type of reaction of the host plant. They form a protective barrier against pathogens by collecting at infection sites and act to decrease susceptibility of plants. They may have anti-fungal or anti-bacterial activity.


  • PR protein


Molecular function

Gene Ontology


response to biotic stimulus [ GO:0009607 ]


Plant defensePathogenesis-related proteinMolecular functionBiological process
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