Section I. Gene Regulation and Gene Expression.- 1. Signals for gene expression in ripening tomato fruit.- 2. Regulation, maturation and function of tomato fruit polygalacturonase.- 3. Characterization and expression of a ripening-induced cellulase gene from avocado.- 4. Gene expression in senescing leaves.- 5. Regulation of ethylene biosynthesis in higher plants: induction and identification of 1-amino-cyclopropane-1-carboxylate synthase.- 6. Auxin- and vound-induced expression of ACC synthase.- 7. Changes in gene expression during ethylene-induced leaf abscission.- 8. The cell biology of bean leaf abscission.- Section II. Cell Wall and Enzyme Changes.- 9. Sorting signals and trafficking of lysosomal and extracellular hydrolases of cell separation.- 10. Extensin peroxidase ties the knots in the extensin network.- 11. Cell wall-derived elicitors — are they natural (endogenous) regulators?.- 12. Polygalacturonase activity in the ripening tomato fruit.- 13. Hormone-regulated modifications to cell wall polysaccharides; relevance to cell separation.- 14. Ethylene and polygalacturonase — what else is involved in cell separation in ripening fruit?.- Section III. Pathogenic Cell Separation.- 15. Signals and cell wall events in plant-pathogen interactions.- 16. Host cell wall loosening and separation by plant pathogens.- 17. The degradation of potato cell walls by pathogens.- Section IV. Signal Specificity and Target Cell Status.- 18. Interference by ethylene with the abscission retarding effects of auxin in citrus leaves.- 19. Identification of leaf abscission zones as a specific class of target cells for ethylene.- 20. IAA mediated cell separation in the sepal splitting of Oenothera lamarkiana flower buds.- 21. Pollination-induced corolla abscission and senescence and therole of short-chain fatty acids in the process.- 22. The abscission process in peach: structural, biochemical and hormonal aspects.- Section V. Cell Separation in Development.- 23. Cell separation: a developmental feature of root caps which may be of fundamental functional significance.- 24. Cell wall changes in ripening peaches.- 25. Regulation of aerenchyma formation in roots and shoots by oxygen and ethylene.- 26. Cell isolation, recognition and fusion during sexual reproduction.- 27. Pectinaceous beads and pectinase on callus cell surfaces in graft unions and in culture.- 28. Signals between plant and bacterial cells: specific domains in cell walls, a new insight.- Section VI. Crop Production and Harvesting.- 29. Bud, flower and fruit drop in citrus and other fruit trees.- 30. Post-harvest berry drop and its control in certain grape varieties.- 31. Olive inflorescence, flower, fruit and leaf abscission with chemicals used for mechanical harvest.- Section VII Additional Contributions.- 32. Putative ethylene binding protein(s) from abscission zones of Phaseolus vulgaris.- 33. Differential abscission and ripening responses to ethylene by tabasco pepper leaves and fruit: protein “marker events” as probes.- 34. Chimeric analysis of cell layer interactions during development of the flower pedicel abscission zone.- 35. The role of ethylene in petal abscission of red raspberry.- 36. Peroxidases and cell wall growth by epicotyls of Cicer arientinum L. Possible regulation by calcium and calmodulin and relationship with cell wall loosening.- 37. A threonine and hydroxyproline-rich glycoprotein from maize.- 38. The role of endosperm degradation in the germination of tomato seeds.- 39. Auxin-derived pear cells in culture as a model system for studying senescence.- 40.Studies on the release of mesophyll protoplasts from Cinchona ledgeriana L..- 41. Cell separation events in Poplar in response to sulphur dioxide and ozone: involvement of ethylene.- 42. Cell wall pectic content as an early signal for cell separation.- Contributor Index.
