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Full Description
The Boron '97 meeting was a great success in summarising all recent developments in basic and applied research on boron's function, especially in plants. New techniques have since been developed and new insight has been gained into the role of boron in plant and animal metabolism. Nevertheless, there were still lots of open questions. The aim of the present workshop held in Bonn as a satellite meeting to the International Plant Nutrition Colloquium was thus to gather all actual information which has been gained since the Boron '97 meeting and to compile knowledge, both from animal and plant sciences. Furthermore, applied aspects had to be addressed too, as there is an increasing awareness of boron deficiencies even in crops such as wheat, which have formerly not been considered as responsive to boron application. Genetic differences in boron demand and efficiency within one species are a further important topic which has gained importance since the 1997 meeting. More in-depth knowledge on the mechanisms of boron efficiency are required as an increased efficiency will be one major possibility to maintain and improve crop yields for resource-poor farmers. Nevertheless, it has also clearly been shown that an adequate supply of boron is needed to obtain high yields of crops with a high quality, and that a sustainable agriculture has to provide an adequate boron supply to compensate for inevitable losses through leaching (especially in the humid tropics and temperate regions) and for the boron removal by the crop.
Contents
Methods in Boron Research.- Specific Methods for Boron Studies in Plants.- Electron Energy Loss Spectroscopy Methodology for Boron Localisation in Plant Cell Walls.- Boron in Animals and Humans.- Boron-Binding-Biomolecules: A Key to Understanding the Beneficial Physiologic Effects of Dietary Boron from Prokaryotes to Humans.- The Nutritional Importance and Pharmacological Potential of Boron for Higher Animals and Human.- Databases Available to Health Professionals for Boron Intake Determinations.- How Boron is Being Used in Medical Practice.- Boron in Plants: Requirements and Function.- Boron Requirements of Plants.- Uptake and Transport of Boron.- Boron in Plant Reproduction.- Characterization of Boron Uptake in Higher Plants.- Boron Uptake and Retranslocation in Cultivars of Brassica napus Differing in Boron Efficiency.- Seasonal Conditions Modify Pollen Viability Responses to B Deficiency in Wheat (Triticum aestivum L. cv. Wilgoyne).- Boron Function in Plant Cell Walls: Research Progress Since 1997.- Stability of the Borate-ester Cross-link in Rhamnogalacturonan II at Low pH and Calcium Activity in muro and in vivo.- Rapid Responses of Plants to Boron Deprivation: Where are the Links Between Boron's Primary Role and Secondary Reactions?.- The Effect of Boron on Pollen Development in Two Wheat Cultivars (Triticum aestivum L., cv. 'Fang 60' and 'SW 41').- Low Boron Supply Depresses Seed Viability in Canola (Brassica napus L.) and Lupin (Lupinus angustifolius).- Effect of Boron on the Metabolism of Carbohydrates.- Effects of Silicon on the Availability of Boron: Possible Effects on the Phenol Pathway and on the Redox Status in Cucumis sativus L.- High Light Intensity Increases External Boron (B) Requirements for Leaf Growth of Sunflower (Helianthus annuus L.cv. Hysun 25) in B-buffered Solution Culture.- Boron Toxicity.- Boron Toxicity in Plants and Animals.- Boron Toxicity: the Importance of Soluble Boron.- Boron in Lower Organisms.- Interaction of Boron and Calcium in the Rhizobium-Legume N2-Fixing Symbiosis.- Essentiality of Boron for Symbiotic Nitrogen Fixation in Legumes and Actinorhizal Plants: Requirement for Frankia BCU110501.- Genotypic Differences in Boron Efficiency.- Boron Nutrition of Crops and Genotypic Variation in Boron Efficiency: Boron Nutrition of Crops.- Arabidopsis thaliana Mutant bor1-1 is Defective in Boron Translocation.- Effect of B on Cell Wall Regeneration from Protoplasts of B-efficient and B-inefficient Rape (Brassica napus L.) Cultivars.- Boron Efficiency in Wheat Germplasm from Bangladesh.- Genotypic Variation in Boron Uptake and Utilization by Rice and Wheat.- Prognosis of Boron Requirements.- Prognosis of Boron Deficiency in Oilseed Rape (Brassica napus) by Soil Analysis.- Determining the Extractable Boron Fraction as a Diagnostic Criterion for the Assessment of the Plant's Boron Status.- Boron Spatial Variability and Evaluation of Soil Fertility.- Calibration of 1 M HCl Extractable Soil Boron.- Establishment and Management of Boron Deficiency in Field Crops in Pakistan: A Country Report.- Boron Nutrition of Crops.- Boron Deficiency in Cotton Grown on Calcareous Soils of Pakistan: I. Distribution of B Availability and Comparison of Soil Testing Methods.- Boron Deficiency in Cotton Grown in Calcareous Soils of Pakistan: II. Correction and Criteria for Foliar Diagnosis.- Boron Deficiency in Rainfed Alkaline Soils of Pakistan: Incidence and Genotypic Variation in Rapeseed—Mustard.- Boron Deficiency in Rainfed Alkaline Soils of Pakistan: Incidence and Boron Requirement of Wheat.- Reactionof Sugar Beet to Boron Fertiliser Application in Pot Experiments.- Boron Content in Leaves and Coffee Yield from 1990 to 2000 in a Brazilian Coffee Plantation.- Boron Content of Cultivated Soils in Central-Southern Anatolia and its Relationship with Soil Properties and Irrigation Water Quality.- Yield and Yield Attributes of Durum Wheat (Triticum durum Desf.) as Affected by Boron Application.- Author Index.
