O. L. LANGE, P. S. NOBEL, C. B. OSMOND, and H. ZIEGLER In the original series of the Encyclopedia of Plant Physiology, plant water relations and photosynthesis were treated separately, and the connection between phenomena was only considered in special chapters. O. STOCKER edited Vol ume III, Pjlanze und Wasser/Water Relations of Plants in 1956, and 4 years later, Volume V, Parts I and 2, Die COrAssimilation/The Assimilation of Carbon Dioxide appeared, edited by A. PIRSON. Until recently, there has also been a tendency to cover these aspects of plant physiology separately in most text books. Without doubt, this separation is justifiable. If one is specifically inter ested, for example in photosynthetic electron transport, in details of photophos phorylation, or in carbon metabolism in the Calvin cycle, it is not necessary to ask how these processes relate to the water relations of the plant. Accordingly, this separate coverage has been maintained in the New Series of the Encyclopedia of Plant Physiology. The two volumes devoted exclusively to photosynthesis are Volume 5, Photosynthesis I, edited by A. TREBST and M. AVRON, and Volume 6, Photosynthesis II, edited by M. GIBBS and E. LATZKO. When consider ing carbon assimilation and plant water relations from an ecological point of view, however, we have to recognize that this separation is arbitrary.
Table of Contents
B.- 1 Water in the Soil-Plant-Atmosphere Continuum.- 2 Water in Tissues and Cells.- 3 Water Uptake and Flow in Roots.- 4 Water Uptake by Organs Other Than Roots.- 5 Transport and Storage of Water.- 6 Resistance of Plant Surfaces to Water Loss: Transport Properties of Cutin, Suberin and Associated Lipids.- 7 Stomatal Responses, Water Loss and CO2 Assimilation Rates of Plants in Contrasting Environments.- 8 Mathematical Models of Plant Water Loss and Plant Water Relations.- 9 Physiological Responses to Moderate Water Stress.- 10 Desiccation-Tolerance.- 11 Frost-Drought and Its Ecological Significance.- 12 Water Relations in the Germination of Seeds.- 13 Environmental Aspects of the Germination of Spores.- 14 Physiological Responses to Flooding.- 15 Functional Significance of Different Pathways of CO2 Fixation in Photosynthesis.- 16 Modelling of Photosynthetic Response to Environmental Conditions.- 17 Regulation of Water Use in Relation to Carbon Gain in Higher Plants.- 18 Plant Life Forms and Their Carbon, Water and Nutrient Relations.- Author Index.- Taxonomic Index.