Potato Late Blight (D. Clarke).Phytophthora Root and Stem Rot of Soybean: A Case Study (J. Paxton).Flax Rust (M. Coffey).Fireblight - a Case Study (R. Goodman).Crown Gall Disease: a Case Study (M. Drummond).Fungal Penetration of the First Line Defensive Barriers of Plants (P. Kolattukudy and W. Koller).The Mechanisms and Significance of Enzymic Degradation of Host Cell Walls by Parasites (R. Cooper).The Biochemistry of Fungal and Bacterial Toxins and Their Modes of Action (R. Durbin).The Host-Parasite Interface and Nutrient Transfer in Biotropic Parasitism (J. Manners and J. Gay).Molecular Genetics of Plant Disease (B. Staskawicz).Cell Walls and Other Structural Barriers in Defence (J. Ride).Antimicrobial Compounds (J. Mansfield).Macromolecules, Recognition and the Triggering of Resistance (M. Yoshikawa).Recognition of Bacteria by Plants (U. Mazzucchi).Bioenergetic and Metabolic Disturbances in Diseased Plants (S. Hutcheson and R. Buchanan).The Effects of Disease on the Structure and Activity of Membranes (A. Novacky).Phenylpropanoid Metabolism and its Regulation in Disease (M. Legrand).Transcription and Translation in the Diseased Plant (L. van Loon and J. Callow).Hormones and Metabolic Regulation in Disease (E. Elstner).Biochemical Plant Pathology and Plant Disease Control (K Brent).Subject Index.