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A collection of papers that give a comprehensive description of the major areas of research on the interactions between plants and their pathogens. State-of-the-art knowledge about research on microbial avirulence genes and plant resistance genes, about pathogenicity factors and signals for establishment of infection, about elicitors and intermediates in the signalling pathway, and about the genes involved in plant responses to pathogens and environmental stress is reviewed. The different topics covered show that modern tools of plant cellular and molecular biology are now available to...

Research on the mechanisms of plant defense responses to stress and pathogen attack has attracted much attention in recent years. This increasing interest stems from the fact that the tools of molecular biology now enable us to study the molecular basis of old biological concepts such as host-pathogen recognition (and particularly the gene- for-gene relationship), hypersensitive cell death and systemic acquired resistance. Our knowledge about avirulence and resistance genes, elicitors, signal transduction and genes involved in plant defense is rapidly expanding. Moreover we are just beginning...