Symbiotic Nitrogen Fixation in Plants

Preface; Part I. Genetical aspects and taxonomy: 1. Recent advances in the genetics of nitrogen fixation; 2. Genetic analysis of nitrogen fixation in Klebsiella pneumoniae; 3. Control of nitrogenase synthesis in Azotobacter vinelandii; 4. Effects of some mutations on symbiotic properties of Rhizobium; 5. Transduction of effectiveness in Rhizobium meliloti; 6. Genetic transformation in Rhizobium japonicum; 7. Plasmid control of effectiveness in Rhizobium: transfer of nitrogen-fixing genes on a plasmid from Rhizobium trifolii to Klebsiella aerogenes; 8. The demonstration of conjugation in Rhizobium leguminosarum; 9. Identification and classification of root nodule bacteria; 10. The nodulation profile of the genus Cassia; Part II. Quality of Legume Inoculants: 11. The production of high quality inoculants and their contribution to legume yield; 12. Principles of Rhizobium strain selection; 13. Carriers of rhizobia and the effects of prior treatment on the survival of rhizobia; 14. A method of making a pure-culture, peat-type, legume inoculant, using a substitute for peat; 15. Methods of inoculating seeds and their effect on survival of rhizobia; 16. Some studies on the necessity of legume inoculation in Serbia (Yugoslavia); 17. Agar and peat inoculation efficiency in Bulgaria; 18. Yield responses of soybean, chickpea, pea and lentil to inoculation with legume inoculants; Part III. Field Experiments on Nitrogen Fixation by Nodulated Legumes: 19. IBP field experiments on nitrogen fixation by nodulated legumes; 20. Influence of inoculation, nitrogen fertilizers and photosynthetic source-sink manipulations on field-grown soybeans; 21. Field response of legumes in India to inoculation and fertiliser applications; 22. Effect of inoculation and fertiliser application on the growth of soybeans in Rumania; 23. Inoculation and nitrogen fertiliser experiments on soybeans in Cuba; 24. Field and greenhouse experiments on the response of legumes in Egypt to inoculation and fertilisers; 25. Application of the acetylene reduction technique to the study of nitrogen fixation by white clover in the field; Part IV. Legume Nitrogen Fixation and the Environment: 26. Symbiotic specialisation in pea plants: some environmental effects on nodulation and nitrogen fixation; 27. Physiology of the reaction of nodulated legumes to environment; 28. Symbiosis in tropical grain legumes: some effects of temperature and the composition of the rooting medium; 29. Recovery and compensation by nodulated legumes to environmental stress; 30. Nitrogen fixation by legumes subjected to water and light stresses; 31. Photosynthate as a major factor limiting nitrogen fixation by field-grown legumes with emphasis on soybeans; Part V. Nitrogen-fixing Symbioses in Non-Leguminous Plants: Preface; 32. The results of the IBP survey of root-nodule formation in non-leguminous angiosperms; 33. Symbiotic interactions in non-leguminous root nodules; 34. Ultrastructural studies of non-leguminous root-nodules; 35. Nitrogen fixation in root nodules of alder and pea in relation to the supply of photosynthetic assimilates; 36. The formation and nitrogen-fixing activity of the root nodules of Alnus glutinosa under field conditions; 37. Endophye adaption in Gunnera-Nostoc symbiosis; 38. Nitrogen fixation in some natural ecosystems in Indonesia; 39. Bacterial leaf symbiosis and nitrogen fixation; 40. A discussion of the results of cross-inoculation trials between Alnus glutinosa and Myrica gale; 41. The possibility of extending the capacity for nitrogen fixation to other plant species. A summary of proceedings at an open session held during the Edinburgh meeting; Index.