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2015
Pseudomonas strains are fast growing, genetically diverse and metabolically versatile bacteria. Many pseudomonad species are preferential inhabitants of the rhizosphere of plants, reaching up to 108 CFU/g of roots for crop species like soybean or maize in the field.
Claudio Valverde +2 more
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Pseudomonas strains are fast growing, genetically diverse and metabolically versatile bacteria. Many pseudomonad species are preferential inhabitants of the rhizosphere of plants, reaching up to 108 CFU/g of roots for crop species like soybean or maize in the field.
Claudio Valverde +2 more
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Molecular relationship of an atypical Azospirillum strain 4T to other Azospirillum species
Research in Microbiology, 1994DNA/DNA hybridization, plasmid content and partial 16S rDNA sequence were determined to confirm the relationship between two Azospirillum strains, 4B and 4T, isolated from the same rice rhizosphere. The partial 16S rDNA sequence was determined for 9 strains belonging to 5 Azospirillum species which included Azospirillum lipoferum strains 4B and 4T, and
Philippe Normand +3 more
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Characterization of a temperate bacteriophage for Azospirillum
Virology, 1982Abstract A temperate bacteriophage, forming plaques on Azospirillum lipoferum strain Br17, was isolated from Brazilian soil samples. The phage morphology as revealed by electron microscopy showed an icosahedral head of 56 nm and a tail of 250 nm, to which six spikes are attached. The phage genome is double-stranded linear DNA of 36 kb with cohesive
Patrick Laurent +5 more
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Polyhydroxybutyrate in Azospirillum brasilense [PDF]
, 2015 Polyhydroxybutyrate (PHB) is a polyhydroxyalkanoate produced by several bacteria as carbon storage and reductive equivalents sink. The production of PHB has been reported for several plant-associated bacteria, and especially in Azospirillum brasilense, the production of PHB has been associated as a factor for stress endurance.
Marcelo Müller-Santos +3 more
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Homology between plasmids of Azospirillum brasilense and Azospirillum lipoferum
1989Azospirillum strains examined so far contain large plasmids with which no phenotypic property has been associated. Homology was previously detected between total DNA from several Azospirillum strains and Rhizobium meliloti nodulation (nod and hsn) genes, which in Rhizobium are plasmid-borne. From A.
Marc Galimand +3 more
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Inoculation of millet with azospirillum
Plant and Soil, 1979Millet plants (Pennisetum glaucum) were grown at three levels of nitrogen fertilization with and without an inoculum of live nitrogen-fixing Azospirillum cells. The highest average rate of nitrogen fixation as estimated from acetylene reduction by excised preincubated roots was only 23g N2 fixed per ha per day and occurred after treatment with low ...
Lynn E. Barber +2 more
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Phylogenetic Studies of the Genus Azospirillum
1995The 16S rDNA of seventeen Azospirillum strains, fourteen of which assigned to one of known A. amazonense, A. brasilense, A. halopraeferens, A. irakense and A. lipoferum species, and other three of uncertain taxonomic collocation, was sequenced and analysed after polymerase chain reaction amplification, in order to investigate the phylogenetic ...
FANI, RENATO +10 more
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Journal of Applied Bacteriology, 1990
Michiels, K., Verreth, C. & Vanderleyden, J. 1990. Azospirillum lipoferum and Azospirillum brasilense surface polysaccharide mutants that are affected in flocculation. Journal of Applied Bacteriology69, 705–711.Surface polysaccharide production by Azospirillum is demonstrated by fluorescence of colonies grown on media containing the fluorescent dye
K. Michiels +2 more
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Michiels, K., Verreth, C. & Vanderleyden, J. 1990. Azospirillum lipoferum and Azospirillum brasilense surface polysaccharide mutants that are affected in flocculation. Journal of Applied Bacteriology69, 705–711.Surface polysaccharide production by Azospirillum is demonstrated by fluorescence of colonies grown on media containing the fluorescent dye
K. Michiels +2 more
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Isolation and properties of Azospirillum lipoferum and Azospirillum brasilense surface polysaccharide mutants [PDF]
, 1989 Polysaccharide production by Azospirillum strains was indicated by fluorescence on growth media containing calcofluor. Mutants showing decreased and increased levels of fluorescence were obtained from A. lipoferum strain Sp59b by chemical mutagenesis, and from A. brasilense strain 7030 by Tn5 mutagenesis.
Jozef Vanderleyden +3 more
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1985
Pleomorphism in azospirilla appears to be induced by medium composition rather than pH. Complex organic media stimulate it and it is more pronounced in Azospirillum lipoferum than in A. brasilense. Besides ‘capsules’, protoplasmic globular structures (free protoplasts) sometimes may be produced. Under certain conditions the smaller cells appear to have
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Pleomorphism in azospirilla appears to be induced by medium composition rather than pH. Complex organic media stimulate it and it is more pronounced in Azospirillum lipoferum than in A. brasilense. Besides ‘capsules’, protoplasmic globular structures (free protoplasts) sometimes may be produced. Under certain conditions the smaller cells appear to have
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