By R.N. Goodman and A.J. Novacky SCROLL DOWN TO ORDER THIS TITLE. Examines fungus-, virus-, and bacteria-induced hypersensitive reactions. The historical aspects, biochemical-physiological, ultrastructural, and specific genetic factors implicated in the induction and development of these reactions are also discussed. Table of Contents Acknowledgement; Foreword; The Fungus Induced Hypersensitive Reaction (HR); Some historical aspects; HR-defined; The fungus model; Histological Chronology of HR-induced cell death; Relationship of cyclosis suppression to HR; Ultrastructural and histological aspects of HR induced by biotrophic fungi; Respiratory processes leading to melanization and gelation; Direct evidence for membrane damage; A requirement for de nova protein synthesis?; Potentiation of the HR response of tissue by aging; Number of potato cells contributing to the development of rapid HR; Do phytoalexins cause HR-induced host cell death?; Relationship of enzymes synthesizing phytoalexins to HR; Role of haustorium in the HR; Variations in HR development in host and non-host tissue--In monokaryon and dikaryon infections, In non-host tissue; HR reflects the sensitivity of mesophyll cells to Erisyphe graminis var. hordie haustoria; Host cell death precedes fungus suppression in Bremia lactucae-induced HR; HR is a point response of the plasmalemma to haustoria of Puccinia graminis; The effect of temperature on HR development in Puccinia-infected wheat; Elicitor and receptor of the HR phenomenon; Binding of Fungal components to host cell; Influence of hyphal wall components (HWC) on potato protoplasts; The hypersensitivity inhibiting factor (HIF); Elicitation of HR by arachidonic and eicosapentaenoic acid; Interaction between elicitor (AA), lipoxygenase and peroxidase in HR development; The relationship of lipoxygenase to light in controlling HR-related necrosis; Glucans, enhancers and suppressors of HR; The apparent dual function of abscisic acid on induced resistance; Membrane potential changes induced by HR; role of oxygen radicals in HR induction; NAADPH oxidase, a basis for an elevated HR potential?; The role of NADPH oxidase in HR development; Oxygen radical generation in other hosts; Role of water soluble glucans (WSG); Activation of NADPH oxidase; Evidence for the hydroxyl radical involvement in HR-related phytoalexin accumulation; Some doubt in the oxygen radical-HR hypothesis; H202-the result of the conversion of an elicitor to a second messenger?; Site of action and fate of the elicitor in planta; The ontogeny of H202; Expression of HR and pathogenesis genes; Genetic manipulation of the fungal genome; The Virus-Induced Hypersensitive Reaction; Introduction; What is virus-induced HR Infection process of TMV in tobacco resulting in HR (local lesion); Portals of entry for virus particles or RNA; Role of temperature in replication and necrosis; Membrane damage and electrolyte leakage; Influence of a toxicity factor in HR development; Graft transmission of HR; Ultrastructural effects of HR; Host cell wall compositional changes in local lesion (HR); Respiratory changes associated with HR; Relationship of oxygen radicals to virus-induced local lesion formation; Role of the N and N' genes in HR development; HR induction of altered RNA or Protein; Elicitor for N gene expression of HR; The Bacteria-Induced Hypersensitive Reaction; Historical aspects and general considerations; Relationships between bacteria and plants--Bacteria on the plant surface, The leaf intercellular space, Saprophytic and pathogenic bacteria and plants, Role of bacterial extracellular polysaccharides, Multiplication of bacteria; Nature of pathogenesis by leaf-spotting bacteria--Nutrient supply, Permeability changes during bacterial pathogensis, Membrane potential studies; Nature of bacteria-induced hypersensitive reaction-- Requirement of living bacteria for HR induction, Attachment and recognition of bacteria, Requirement for bacteria/plant contact, Attachment or localization of bacteria, Role of bacterial surface molecules; Expression of bacteria-induced HR--Ultrastructural characteristics, Macroscopic vs. microscopic HR; Alterations of cell membrane--Electrolyte efflux, Strong ion difference, Role of calcium, Electrical membrane potential (Em); Lipid peroxidation--Role of lipoxygenase in lipid peroxidation, Oxidative burst; Alterations of solute and water transport; Status of stomata during HR; Conditions that alter the HR expression; Genes Controlling Pathogenicity and the Hypersensitive Reaction; Historical aspects of hrp genes; Control of hrp gene expression; Export of hrp gene product(s)-- hrp gene activation by the host plant or environmental factors; Harpin: the first bacterial elecitor; Avirulence genes and the gene-for-gene concept; Relationship between hrp and avr genes; avr gene products--AvrD, AvrBs3; Summary; Unanswered Questions Concerning HR Development; Literature citations; Index; About the Authors 1994; 6" x 9" softcover; 256 pages; 77 black and white illustrations; ISBN 0-89054-165-5; (1 pound) |
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