th th On June 17 and 18 1987 the fourth workshop on "Azospi rillum: Genetics, Physiology, Ecology" took place at the Uni ver sity of Bayreuth, West Germany, organized by the Genetics depart ment. There were about 80 participants, who came from German research institutions, from other European countries, from Is rael, Egypt, India, North Vietnam, and North and South America. The former workshops had also taken place in Bayreuth, in 1981, 1983 and 1985, hence the organizers could draw on the experience obtained at these earlier workshops. Azospirilla have, during the past 15 years, found an ever increasing scientific interest because, first, these soil bacte ria carry the genetic information for binding molecular nitrogen from the air and, second, they live in close vicinity to the roots of grain crops and forage grasses. By exploitation of these two properties, it is hoped to develop inoculation procedures which can be used in nitrogen-deficient soils.

Klappentext

th th On June 17 and 18 1987 the fourth workshop on "Azospi­ rillum: Genetics, Physiology, Ecology" took place at the Uni ver­ sity of Bayreuth, West Germany, organized by the Genetics depart­ ment. There were about 80 participants, who came from German research institutions, from other European countries, from Is­ rael, Egypt, India, North Vietnam, and North and South America. The former workshops had also taken place in Bayreuth, in 1981, 1983 and 1985, hence the organizers could draw on the experience obtained at these earlier workshops. Azospirilla have, during the past 15 years, found an ever increasing scientific interest because, first, these soil bacte­ ria carry the genetic information for binding molecular nitrogen from the air and, second, they live in close vicinity to the roots of grain crops and forage grasses. By exploitation of these two properties, it is hoped to develop inoculation procedures which can be used in nitrogen-deficient soils.

Inhalt
Advances in Genetics of Azospirillum brasilense Sp7: Use of Tn5 Mutagenesis for Gene Mapping and Identification.- Cloning of Azospirillum brasilense Sequences Promoting Transcription in Escherichia coli.- Characterization of DNA Segments Adjacent to the nifHDK Genes of Azospirillum brasilense Sp7 by Tn5 Site-Directed Mutagenesis.- A Tn5 Induced nifA Like Mutant of Azospirillum brasilense.- Tn5-Mutagenesis in Azospirillum brasilense.- Isolation of Transposon Induced Auxin-Negative Mutations in Azospirillum lipoferum.- Aromatic Amino Acid Aminotransferases of Azospirillum lipoferum and Their Possible Involvement in IAA Biosynthesis.- Mobilization of Cryptic Plasmids in Azospirillum.- A Transformable Mutant of Azospirillum brasilense ATCC 29710.- Selection at the Chemostat of Azospirillum brasilense Cd N2-fixing at High O2Pressure.- Root Hair Deformation Induced on Maize and Medicago by an Azospirillum Transconjugant Containing a Rhizobium meliloti Nodulation Region.- Influence of Azospirillum brasilense on Nodulation of Legumes.- Are Azospirillum Bacteriocins Produced and Active in Soil?.- Nitrogen Fixing Ability of Azospirillum lipoferum in a Spermosphere System in Relation to Former Growth Conditions.- N2-Dependent Growth of Azospirillum spp. in Batch Cultures at Low Concentrations of Oxygen.- Osmoregulatory Properties of Azospirillum spp..- Carbon Sources for the in-vivo Nitrate Reductase Activity in Azospirillum brasilense Cells.- An Influence of Plant Growth Substances on Growth and Nitrogenase Activity from Azospirillum brasilense.- Influence of Herbicides on Growth and Nitrogenase Activity of Azospirillum.- The Effect of Dicofol on Morphology Growth and Nitrogenase Activity of Azospirillum lipoferum.- Interaction Between Azospirillum brasilense Cd and Wheat Root Cells During Early Stages of Root Colonization.- Quantitative Measurement of Azospirillum Plant Cell Attachment.- Effects of Inoculation with Different Strains of Azospirillum brasilense on Wheat Roots Development.- Nitrogenase Activity of Sterile Cereal Seedlings Inoculated with Azospirillum brasilense: Differences Between Cultivars and Possible Significance.- Importance of Nonsymbiotic Nitrogen-Fixing Bacteria in Organic Farming Systems.- Aspects of the Ecology of Azospirillum sp. in Belgian Soils.- Modification of Soil Environment Through Straw Application Versus Azospirillum spp. Inoculation.- Azospirillum spp. Ecology of Some Soils of the Somali Republic.- Temperature and Salt Tolerance of Azospirillum spp. from Salt-Affected Soils in Brazil.- Azospirilla from Rice Fields Near Hanoi.