Nitrogen Fixation with Non-Legumes: "The Fourth International Symposium on 'Nitrogen Fixation with Non-Legumes', Rio de Janeiro, 23-28 August 1987"

Contents Preface ix Session 1: Mechanisms of infection of plants by N 2 -frxing microorganisms \* J. I. Sprent and M. de Faria, Mechanisms of infection of plants by nitrogen fixing organisms Session 2: Frankia and Parasponia symbiosis \* C. Rodriguez-Barrueco, F. Sevillano and T. M. Nebreda, Effective nodulation of Coriaria myrtifolia L.induced by Franlda strains from Alnus glutinosa L. (Gaertn. Front Matter....Pages i-vii Front Matter....Pages 1-1 Mechanisms of infection of plants by nitrogen fixing organisms....Pages 3-11 Front Matter....Pages 13-13 Effective nodulation of Coriaria myrtifolia L. induced by Frankia strains from Alnus glutinosa L. (Gaertn.)....Pages 15-24 Biology of the Pavasponia-Bradyrhizobium symbiosis....Pages 25-33 Glasshouse evaluation of the growth of Alnus rubra and Alnus glutinosa on peat and acid brown earth soils when inoculated with four sources of Frankia ....Pages 35-46 Ultrastructure of Frankia isolated from three Chilean shrubs (Rhamnaceae)....Pages 47-53 Front Matter....Pages 55-55 Physiology and agronomy of Azolla-Anabaena symbiosis....Pages 57-62 Heterotrophic metabolism and diazotrophic growth of Nostoc sp. from Cycas circinalis ....Pages 63-70 Light dependent nitrogen chlorosis in a heterocystous cyanobacterium....Pages 71-76 Isolation and characterization of the N 2 -fixing symbiotic cyanobacterium Anabaena azollae ....Pages 77-82 Bacteria in the Azolla-Anabaena symbiosis....Pages 83-88 New data on the Azolla-Anabaena symbiosis....Pages 89-94 New data on the Azolla-Anabaena symbiosis....Pages 95-100 Front Matter....Pages 101-101 Isolation and identification of root associated diazotrophs....Pages 103-108 Occurrence and survival of Azospirillum spp. in temperate regions....Pages 109-114 Klebsiella sp. NIAB-I : A new diazotroph, associated with roots of kallar grass from saline sodic soils....Pages 115-120 Ecophysiological aspects of growth and nitrogen fixation in Azospirillum spp.....Pages 123-136 The phytohormonal interactions between Azospirillum and wheat....Pages 137-145 Investigations on growth, nitrogen fixation and ammonium assimilation by a bacterium isolated from rice soil....Pages 147-152 Front Matter....Pages 153-153 Regulation of nif genes expression in Azospirillum brasilense and Herbaspirillum seropedicae ....Pages 155-163 Homology between plasmids of Azospirillum brasilense and Azospirillum lipoferum ....Pages 165-172 Front Matter....Pages 153-153 Self-transmissible nif -plasmids in Entevobacter ....Pages 173-178 Identification of Bacillus azotofixans nitrogen fixation genes using heterologous nif probes....Pages 179-187 Isolation and properties of Azospirillum lipoferum and Azospirillum brasilense surface polysaccharide mutants....Pages 189-195 Front Matter....Pages 197-197 Plant-bacteria interactions with special emphasis on the kallar grass association....Pages 199-207 Location of diazotrophs in the root interior with special attention to the kallar grass association....Pages 209-218 Field inoculation of sorghum and rice with Azospirillum spp. and Herbaspirillum Seropedicae ....Pages 219-224 Front Matter....Pages 225-225 Involvement of IAA in the interaction between Azospirillum brasilense and Panicum miliaceum roots....Pages 227-234 Influence of inoculation with Azospirillum brasilense and Glomus fasciculatum on sorghum nutrition....Pages 235-239 Inoculation with associative N 2 -fixers in Egypt....Pages 241-246 Front Matter....Pages 247-247 Association between N 2 -fixing bacteria and pearl millet plants: Responses, mechanisms and persistence....Pages 249-262 Effect of inorganic N and organic fertilizers on nitrogen-fixing (acetylene-reducing) activity associated with wetland rice plants....Pages 263-272 Impact of soil environmental factors on rates of N 2 -fixation associated with roots of intact maize and sorghum plants....Pages 273-285 Front Matter....Pages 287-287 Natural 15 N abundance as a method of estimating the contribution of biologically fixed nitrogen to N 2 -fixing systems: Potential for non-legumes....Pages 289-299 Survival and colonization of inoculated bacteria in kallar grass rhizosphere and quantification of N 2 -fixation....Pages 301-310 Selection of sugar cane cultivars for associated biological nitrogen fixation using 15 N-labelled soil....Pages 311-319 Occurrence of effective nitrogen-scavenging bacteria in the rhizosphere of kallar grass....Pages 321-330 Back Matter....Pages 331-338 Proceedings of the 4th International Symposium on Nitrogen Fixation with Non-Legumes, Rio de Janeiro, Brazil, August 23-28, 1987