Hormonal Regulation of Development III

R. P. PHARIS and D. M. REID The idea of a separate Encydopedia volume dealing with the "interrelations of plant hormones with factors in the environment of the plant, and its organs and tissues" originated with N. P. KEFFORD, and we are most appreciative of the help and advice provided by Prof. KEFFORD in the formative stages of this volume. We have thus interpreted "environment" very broadly to indude not only factors external to the plant, e. g. , gravity, light, temperature, wind, mechanieal wounding, water, organism s (induding pollen), and magnetic and electric stimuli, but internaI factors as well (e. g. , nutrients, both inorganic and photoassimilate, direction, and time). In our definition of "hormonaI effect", or "hormonaI involvement", we have asked our authors to take a broad ap proach, and to examine not only phenomena that are mediated by the known plant hormones, but to discuss as well a wide variety of processes and events where hormonal involvement is implied through more indirect analyses and observations. The volume begins with environmental factors internaI to the plant; R. J. WEAVER and J. O. JOHNSON thus examine "hormones and nutrients", their inter relationship in movement, accumulation, and diversion. As one studies a plant during its rapid growth phase, and later as maturation and aging proceed, it becomes apparent that time is an environmental cue of great significance, one which may exert a major influence via hormonal messages.

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With contributions by numerous experts

Contenu
I: Factors Internal to the Plant.- Nutrients.- 1 Relation of Hormones to Nutrient Mobilization and the Internal Environment of the Plant: The Supply of Mineral Nutrients and Photosynthate.- Time-Related Factors and Phenomena.- 2 Rhythms and Their Relations to Hormones.- 3 Hormonal Aspects of Phase Change and Precocious Flowering.- Direction.- 4 Polarity.- 5 Epinasty, Hyponasty, and Related Topics.- 6 Position as a Factor in Growth and Development Effects.- II: Factors External to the Plant Gravity.- Gravity.- 7 Roles of Hormones, Protons and Calcium in Geotropism.- Light.- 8 De-Etiolation and Plant Hormones.- 9 Photoperiod and Hormones.- 10 Roles of Hormones in Phototropism.- Temperature.- 11 Plant Growth Regulators and Low Temperature Stress.- Wind and Other Mechanical Factors.- 12 Wind and Other Mechanical Effects in the Development and Behavior of Plants, with Special Emphasis on the Role of Hormones.- 13 Hormonal Control of Wound-Induced Responses.- 14 Water Relations and Plant Hormones.- Organisms.- 15 Pollen. Symbionts and Symbiont-Induced Structures.- 16 Pathogenic and Non-pathogenic Microorganisms and Insects.- 17 Electrical and Magnetic Stimul.- 18 Regulators of Plant Reproduction, Growth and Differentiation in the Environment.- Hormones and Plant Ecology.- 19 The Ecological Role of Plant Growth Substances.- Author Index.