Cellular Interactions

H. F. LINSKENS and J. HESLOP-HARRISON The chapters of this volume deal with intercellular interaction phenomena in plants. Collectively they provide a broad conspectus of a highly active, if greatly fragmented, research field. Certain limitations have been imposed on the subject matter, the most impor tant being the exclusion of long-range interactions within the plant body. It is true that pervasive hormonal control systems cannot readily be demarcated from controls mediated by pheromones or information-carrying molecules with more limited spheres of action, but consideration is given in this volume to the main classes of plant hormones and their functions only incidentally, since these are treated adequately in other volumes of this Encyclopedia series (V - ume 9-11) and in numerous other texts and reviews. Similarly, certain other effects, such as those associated with nutrients and ions, are not considered in any detail. Furthermore, we have excluded intracellular interactions, and also consideration of transport phenomena, which are treated in detail in Vol ume 3 of this Series. Other aspects of inter-cellular interaction, such as cell surface phenomena and implications of lectin-carbohydrate interactions, and plant-virus inter-relationships, are treated in other sections of this Encyclopedia (Volumes 13B and 14B, respectively). In the volume on physiological plant pathology (Volume 4 of this series) special attention has been given to host pathogen interaction. These aspects of our subject will therefore be excluded in the present treatise.

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1 Introduction.- 2 Cellular Interaction: a Brief Conspectus.- 3 Evolutionary Aspects of the Eukaryotic Cell and Its Organelles.- 4 Autotrophic Eukaryotic Freshwater Symbionts.- 5 Autotrophic Eukaryotic Marine Symbionts.- 6 Endosymbiotic Cyanobacteria and Cyanellae.- 7 Epiphytism at the Cellular Level with Special Reference to Algal Epiphytes.- 8 Genetics of Recognition Systems in Host-Parasite Interactions.- 9 The Mycorrhizal Associations.- 10 Plant-Bacterial Interactions.- 11 Cellular and Molecular Recognition Between Higher Plants and Fungal Pathogens.- 12 Mating Systems in Unicellular Algae.- 13 Colony Formation in Algae.- 14 Cellular Interaction in Plasmodial Slime Moulds.- 15 Cell Interactions in the Cellular Slime Moulds.- 16 Sexual Interactions in the Lower Filamentous Fungi.- 17 Barrage Formation in Fungi.- 18 Physiological Interactions Between the Partners of the Lichen Symbiosis.- 19 Mating Systems and Sexual Interactions in Yeast.- 20 Cellular Interactions During Early Differentiation.- 21 Cellular Recognition Systems in Grafting.- 22 Cellular Polarity.- 23 Fusion of Somatic Cells.- 24 Pollen - Pistil Interactions.- 25 Mentor Effects in Pollen Interactions.- 26 Incompatibility.- 27 Incongruity: Non-Functioning of Intercellular and Intracellular Partner Relationships Through Non-Matching Information.- 28 Allergic Interactions.- Author Index.- Index of Plant Genera.

With contributions by numerous experts