Results 181 to 190 of about 6,481 (224)

Identification of the glutamine synthetase adenylyltransferase of Azospirillum brasilense

Research in Microbiology, 2009
Glutamine synthetase, a key enzyme in nitrogen metabolism of both prokaryotes and eukaryotes, is strictly regulated. One means of regulation is the modulation of activity through adenylylation catalyzed by adenylyltransferases. Using PCR primers based on conserved sequences in glutamine synthetase adenylyltransferases, we amplified part of the glnE ...
Anne, Van Dommelen, Stijn, Spaepen, Jozef, Vanderleyden   +2 more
openaire   +2 more sources

Identification of a nifW-like gene in Azospirillum brasilense

Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression, 1993
A small ORF, 5' upstream of the fixABC operon in Azospirillum brasilense Sp7, has been identified. Sequence comparison shows significant homology to the Azotobacter vinelandii and Azorhizobium caulinodans nifW gene.
A, Milcamps, V, Keyers, J, Vanderleyden
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Atypical R–S Dissociation in Azospirillum brasilense

Microbiology, 2003
It was found that atypical R-S dissociation in the type strain A. brasilense Sp7 is not accompanied by drastic changes in the carbohydrate moieties of bacterial lipopolysaccharides but is rather due to different contributions of two O-specific polysaccharides (found in both R and S dissociants) to the age-dependent architectonics of the cell surface.
L Iu, Matora, O B, Serebrennikova, L P, Petrova, G L, Burygin, S Iu, Shchegolev   +4 more
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[Plasmids of Azospirillum brasilense].

Molekuliarnaia genetika, mikrobiologiia i virusologiia, 1987
The cells from natural isolates of A. Brasilense were found to harbour 1 to 4 plasmids with the molecular masses within the 27-300 Md range. 100 Md plasmids are specific for this bacterial species. Strains isolated from the roots of cereals (wheat, maize, barley) have more heterogeneous plasmid composition as compared to the strains isolated from soil.
T I, Bakanchikova, V A, Klimacheva, I A, Borovok, A N, Maĭsurian   +3 more
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Pectic enzymes of Azospirillum brasilense

1991
The production and activity of pectic enzymes elaborated by Azospirillum brasilense (strain C.A. 10), a diazotroph isolated from the rhizosphere of rice (Oryza sativa L.), was studied as this organism is known to enter through the middle lamella to colonize the histosphere of rice roots.
C. Sekar, N. N. Prasad
openaire   +1 more source

Tn5-Mutagenesis in Azospirillum Brasilense

1988
A system is described for transposon mutagenesis of Azospirillum brasilense using the mobilizable plasmid pSUP2021. Mutants were selected on rich medium containing kanamycin and streptomycin. All the auxotrophs isolated were impaired in their sulfur metabolism. Calcofluor-dark Tn5 mutants were tested for their ability to form flocs.
M. Vanstockem, A. Milcamps, K. Michiels, J. Vanderleyden, A. P. Van Gool   +4 more
openaire   +1 more source

Effects of coinoculation of Azospirillum brasilense and Bradyrhizobium spp. in soybean and inoculation of Azospirillum brasilense in corn

Caderno Pedagógico
Soybean and corn are widely cultivated crops in Brazil and worldwide, and are raw materials for several industrial products. This work aimed to evaluate the co-inoculation of Azopirillum brasilense and Bradyrhizobium japonicum in soybean crops, as well as the inoculation of A. brasilense in corn in diferent locations of Goiás.
Elizabete Lourenço Pires, Suellen Polyana da Silva Cunha Mendes, Anna Beatriz Zuliani Beinke, Camilla Carvalho Nunes dos Santos, Moacir Ribeiro Neto, Edson Luiz Souchie   +5 more
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Polysaccharide synthesis in Azospirillum brasilense

1995
The surface of bacteria consists of polysaccharides, like the exopolysaccharides and lipopolysaccharides and, as it is the case for Azospirillum brasilense, glycoproteins like glycosylated flagella. The precursors for the synthesis of polysaccharides are sugarnucleotides.
Paul De Troch, Daniel J. Petersen, Jos Vanderleyden   +2 more
openaire   +1 more source

Carotenoid production and phenotypic variation in Azospirillum brasilense

Research in Microbiology, 2017
We assessed the occurrence of phenotypic variation in Azospirillum brasilense strains Sp7, Cd, Sp245, Az39 and phv2 during growth in rich media, screening for variants altered in colony pigmentation or extracellular polysaccharide (EPS) production. Previous studies showed that EPS-overproducing variants of Sp7 appear frequently following starvation or ...
Gal Reem, Brenholtz, Dafna, Tamir-Ariel, Yaacov, Okon, Saul, Burdman   +3 more
openaire   +2 more sources

Homology between plasmids of Azospirillum brasilense and Azospirillum lipoferum

1989
Azospirillum 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.
Claire Vieille, I. Onyeocha, M. Galimand, Claudine Elmerich   +3 more
openaire   +1 more source