This volume brings together articles written by participants in the seventh seminar in the U.S.-Japan Cooperative Science Seminar series on the molecular and physiologic aspects of interactions between plants and their pathogens. The contributors examine the mechanisms that facilitate communication between the cells of plants and pathogens and within individual cells, and the role that these mechanisms play in plant-pathogen interactions. Topics include signal transduction pathways, genic interactions, sensing of plant signals, plant disease resistance genes, and plant signal responses.

Molecular Aspects of Pathogenicity and Resistance: Requirement for Signal Transduction

Overviews

Progress in Understanding Host-Parasite Interaction—The U.S.-Japan Seminar
     Series, 1966-1995

Cytological Approaches in Understanding Host-Parasite Interactions

Fungal Plant Genic Interactions

Genic Interactions in Hosts and Pathogens
Gene-for-Gene Relationships in Forma Specialis-Genus Specificity of Cereal
     Powdery Mildews

Signal Transduction in Fungal Morphogenesis

Cell Surface Communication in Appressorium Development by Magnaporthe grisea
Molecular Genetic Analysis of Melanin Biosynthetic Genes Essential for Appressorium
     Function in Colletotrichum lagenarium
Cyclic AMP Controls Dimorphic Switching of Ustilago hordei

Bacterial and Fungal Sensing of Plant signals

The Sensing of Plant Signal Molecules by Agrobacterium
Factors Involved in the Pathogenicity of Xanthomonas campestris pv. citri
Induction of Defense Responses in Rice
Molecular Aspects of Pathogenic Specialization in Alternaria alternate Pathogens
The Syringolide Elicitors Specified by Avirulence GeneD and their Specific Perception
     by Rpg4 SoybeanCells

Plant Disease Resistance Genes in Signal Transduction Pathways

Regulation of Genes for Phenyl-Propanoid Synthesis in Pea by Elicitor and
     Suppressor
Signal Transduction Events Involved in Bacterial Speck Disease Resistance
Toward Molecular Isolation of the Blast Resistance Gene in Rice by the Maize Ac/Ds
     Elements
The Involvement of the Cytoskeleton in the Expression of Nonhost Resistance in Plants
Fungal Signals Regulate ATPase and Polyphosphoinositide Metabolism in Pea Plants
Resistance in the Poaceae: Different Roles for Phenolic Compounds

Signaling in Response to Bacterial and Fungal Phytotoxins

Expression of Specific Resistance in the Crown Rust-Oat Interaction
Biosynthesis and Regulation of the Phytotoxin Coronatine in Pseudomonas syringae
Evaluation of the Glycine Decarboxylase Complex as the Possible Site of
     Action of Victorin
Physiological and Molecular Aspects of Alternaria Host-Specific Toxin and
     Plant Interactions

Poster Absracts

Abstracts presented at the 7th Japan-U. S. Cooperative Science Seminar (Molecular Aspects of Pathogenicity and Resistance: Requirement for Signal Transduction)