Revision of the nomenclature of the differential host-pathogen interactions of Venturia inaequalis and Malus

Annu Rev Phytopathol. 2011;49:391-413. doi: 10.1146/annurev-phyto-072910-095339.


The apple scab (Venturia inaequalis-Malus) pathosystem was one of the first systems for which Flor's concept of gene-for-gene (GfG) relationships between the host plant and the pathogen was demonstrated. There is a rich resource of host resistance genes present in Malus germplasm that could potentially be marshalled to confer durable resistance against this most important apple disease. A comprehensive understanding of the host-pathogen interactions occurring in this pathosystem is a prerequisite for effectively manipulating these host resistance factors. An accurate means of identification of specific resistance and consistent use of gene nomenclature is critical for this process. A set of universally available, differentially resistant hosts is described, which will be followed by a set of defined pathogen races at a later stage. We review pertinent aspects of the history of apple scab research, describe the current status and future directions of this research, and resolve some outstanding issues.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Ascomycota / genetics
  • Ascomycota / pathogenicity
  • Ascomycota / physiology*
  • Disease Resistance / genetics*
  • Genes, Fungal / genetics
  • Genes, Plant / genetics
  • Genetic Variation / genetics*
  • Host-Pathogen Interactions / genetics
  • Host-Pathogen Interactions / physiology
  • Malus / genetics
  • Malus / immunology
  • Malus / microbiology*
  • Phenotype
  • Plant Diseases / genetics
  • Plant Diseases / immunology
  • Plant Diseases / microbiology*
  • Plant Immunity / genetics