Role Of Associative Cyanobacteria In Nitrogen Fixation By Azolla

Author : N. A. Hegazi
Publisher :
ISBN 13 :
Total Pages : 628 pages
Book Rating : 4.F/5 ( download)

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Download or read book Nitrogen Fixation with Non-legumes written by N. A. Hegazi and published by . This book was released on 1994 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological nitrogen fixation-past and future. Free-living diazotrophs and photosynthetic bacteria. Free-living diazotrophs and photosynthetic bacteria: an indroction to the session. Poole, physiology of N2 fixation relating to N, 02, H2 status in free-living heterotrophs. Ammonium assimilatory pathways and electron transport system in acetobacter diazotrophicus. Nif-plasmid spread in agricultural soil, as influenced by sugars and their metabolites. Effect of NAD+ in nitrigen fixing rhodospirillum rubrum. Biological dinitrogen fixation in lake Edku, Alexandrina, Egypt. Nitrogenase acitivity(C2H2 reduction) in upper Egyptiansoils amended with wheat straw: Effects of soil moisture and pO2. Nitrogenase activity of free-living diazotrophs under pesticide treatment.Interaction of diazotrophs with other microorganisms. Mixed inocula of azospirillum and other organisms: an introduction to the session. Azospirillum and related organisms: ecological, physiological, biochemical and aspects. Occurrence of diazotrophic bacteria and vesicular- arbuscular mycorrhizal fugi associated with cassava(manihot esculenta crants). Identification of Azoarcus spp.,grassassociated diazotrophs, by analysis of partial 16S rDNA sequences. Nitrogenase, cellulase and pectinase activity in sugar cane roots inoculated together with V.A. mycorrhiza and nitrogen-fixing bacteria. Evalation of N2-fixed by wheat plants grown in sandy soils using tracer techniques. Free-living and symbiotic cyanobacteria: an introduction to the session. Nitrogenase in the marine non-heterocystous cyanobacterium Trichodesmium - a review. N2-fixation in the filamentous cyanobacterium Oscillatoria chalybea measured by mass spectrometry. A global nitrogen regulator in the cyanobacteria. Photosynthesis and nitrogenase activity in Synechocystis and anabaena. Environmental factors regulating the effect of ammonium on nitrogenase activity in cyanobacteria from rice fields. Indole-3-acetic(IAA))) in the azolla-anabaena symbiosis. Potential role of Azolla as green manure for rice in nile delta under different levels of inorganic fertilization. First evidence for the cutinic nature of the envelope at the interface of azolla and its endophytes. Function of paracrystalline phycobiliproteis and phycobilisomes in the diazotrophic synechocystis sp. strain BO 8402 and a derivative strain BO 9201. The induction of dinitrogen fixation in diluted cultures of the filamentous cyanobacterium nostoc 6720. Rice yeld and resistance to infestation with the stem borer chilo agamemnon as affected by algalization under differen agrochemical conditions. Response of some indica and japonica rice to fertilization regimes containing nitrogen and cyanobacteria. The nostoc-gunnera symbiosis: development of the symbiotic tissue. The nostoc-gunnera symbiosis: specificity and early communication. Agglutination of erythrocytes by cell extracts of the azola/anabaena symbiotic association. Comparison between various growth parameters of azolla grown on different media with various pH values. Azolla cultivation in EgyptUse of azolla as biofertilizer in rice-wheat cropping system. Azolla- bacterial symbiosis, detection and preliminary characterization of lectins. The role of azolla with rice plants in N2-fixation(BNF). Dynamic of 15N-labelled azolla into two paddy soils of madagascar. Effect of environmental factors on the nitrogenase activity of nostoc ellipsosporum DH42. Actinorhizal symbiosis. Progress and prospects of research on actinorhizal symbiosis: an introduction to the session. Frankia microsymbiont in dryas drummondii nodules is closely related to the microsymbiont of coriaria and genetically distinct from other characterized frankiaq strains. Differential gene expression in root nodules of alnus glutinosa. Hopanoid lipds in relation to nitrogen fixation: fuction in frankia and occurrence in other diazotrophic organisms. The relative merits of nodule homogenases and pure culture of frankia in inducing nodulation in alder. The use of oligonucleotide probes to detect uncultured frankia strains in the root nmodules of coriaria nepalensiswall. Tchniques of isolation of frankia spp. in growth culture for rhizobium. Antibiotic-resistant derivatives from frankia strains of the casuarina and allocasuarina genera. Interlations and light requirement of nitrogenase and nitrate reductase activities in almus glutinosa. Superior cutivars of casuarina for nitrogen fixation in egypt. Characterization of frankia strains isolated from nodules of casuarina equisetifolina from egypt and Brazil. Plant-associated diazotrophs. Plant-diazotrophs: an introduction to the session. Regulation of nitrogen fixation and nitrogen metabolism in azospirillum brasiliense: a review. Genetic and histochemical analysis of the azospirillum-wheat root association.Regulatory role of the PII protein in the coordination of nitrogenfixation and ammonia assimilation in response to the cellular nitroge status in azospirillum brasilense. Indole-3-acetic acid biosynthesis in azospirillum brasilense. Plasmid contents and nif genes detection inacetobacter diazotrophicus strains. Development and application of 23SrRNA-directed oligo-nucleotide probes for azospirillum spp.,acetobacter diazotrophicus and herbaspirillum. Imunological studies of the weathroot-colonization by the azospirillum brasiliense stains Sp245 using strain-specific monoclonal antibodies. Isolation from the rice rhizosphere of a new species of nitrogen-fixing proteobacteria, belonging to the genus burkholderia. Nitrogen fixation in rice plantlets inoculated with pure or mixed cultures of azospirillum species and bacillus polymyxa. Efficacy and dynamics of colonization of plant root surfaces withpure and mixed cultures of associsated nitrogen fixers. Mixed cultivation and inoculation of various genera of associative diazotrophs. Survival and effect of azorhizobium caulinodans on rice roots. Effect of commercial glyphosate preparates and their additives on associative N2-fixation. Functional organization of the ORFXNTRBC locus of aqzospirillum brasilense SP7 and study of gene regulation by using LACZ fusions.Effect of klebisiella pneumoniae nifa on the regulation of nif gene expression by ammonia in azospirillum brasiliense. Chromosomal make-up in wheat and their response to rhizobium.Produced by single and mixed cultures of A. brasilense and K. pneumoniae and their mutants grown under varions growth conditions. Excretion of NH4+ by A. brasilense and K. pneumoniae mutants resistant to L-methionine sulfoximine. A fermentor system for modelling interactions between endophytic bacteria and plant cell cultures. pH-dependent activity changes of nitrate reductase upon immobilization of Azospirillum brasilense in continuous culture.The growth of some diazotrophs in bath culture.