Results 201 to 210 of about 14,962 (246)

Cell Ultrastructure in Azospirillum brasilense Biofilms

Microbiology, 2020
Due to the primary localization of both epiphytic and endophytic plant growth-promoting rhizobacteria on the surface of the plant root system, biofilm formation is an adaptive trait for these microorganisms. Under conditions of nitrogen limitation in liquid media, nitrogen-fixing Azospirillum brasilense strains switch mainly to the biofilm mode of ...
D. I. Mokeev, S. S. Evstigneeva, A. M. Burov, Yu. A. Filip’echeva, Elena I. Katsy, E. G. Ponomareva, A. V. Shelud’ko, L. P. Petrova   +7 more
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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.
Marc Galimand, Claire Vieille, I. Onyeocha, Claudine Elmerich   +3 more
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Introduction of Plasmids into Azospirillum brasilense by Electroporation [PDF]

, 2000
The genus Azospirillum comprises Gram N2 fixing soil bacteria living in close association with the roots of numerous plants. Field trials, carried out at different locations have demonstrated significant plant growth promotion upon Azospirillum inoculation.
Jozef Vanderleyden, Ann Vande Broek
openaire   +1 more source

Productivity increase, reduction of nitrogen fertiliser use and drought-stress mitigation by inoculation of Marandu grass (Urochloa brizantha) with Azospirillum brasilense

Crop and Pasture Science, 2019
Among the forage species cultivated in South America, the genus Urochloa is the most used, and the cultivar Marandu of U. brizantha is the most widely planted in Brazil.
R. C. Leite, José Geraldo Donizetti dos Santos, Eduardo L. Silva, Cássio R. C. R. Alves, M. Hungria, Robson da Costa Leite, Antônio Clementino dos Santos   +6 more
semanticscholar   +1 more source

Characterization of Azospirillum brasilense Lipopolysaccharides

Mikrobiolohichnyi Zhurnal, 2022
Azospirillum brasilense is a gram-negative, nitrogen-fixing bacterium that colonizes the rhizosphere of various types of grasses and cereals. Lipopolysaccharides (LPS) are a class of complex glycolipids present in the cell membrane of gramnegative bacteria and mediate plant-bacteria interactions. Although the effects of LPS of pathogenic plant bacteria
T.V. Bulyhina, L.D. Varbanest
openaire   +1 more source

Adsorption of Azospirillum brasilense to corn roots

Soil Biology and Biochemistry, 1986
Abstract The adsorption of Azospirillum brasilense strain Cd to corn roots was measured using 32 P-labeled Azospirillum cells. Binding kinetics showed that adherence of bacteria to roots increased during the first 90 min and attained a maximum level within 4.5 h. Maximum binding occurred at pH 6.1.
Yaacov Okon, Yoram Kapulnik, Meir Fischer, Ron Gafny   +3 more
openaire   +2 more sources

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 ...
Jozef Vanderleyden, Anne Van Dommelen, Stijn Spaepen   +2 more
openaire   +3 more sources

Analysis of extracellular polysaccharides of Azospirillum brasilense

1991
Bacteria of the genus Azospirillum live in association with the Graminae. Azospirillum has a growth-promoting effect due to nitrogen-fixation, phytohormone production and improved water household of the plant. Azospirillum is able to attach to plant roots (Umali-Garcia et al. 1980) and A. brasilense Sp245 can even invade into the root cortex.
Jos Vanderleyden, Kris Michiels, Frank B. Dazzo, Paul De Troch, Saleela Philip-Hollingsworth, Guy G. Orgambide   +5 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.
Jos Vanderleyden, Anne Milcamps, Veerle Keyers   +2 more
openaire   +3 more sources

Effect of Different Pesticides on Azospirillum Brasilense

1991
The wide use of pesticides in modern agriculture has stimulated the study of their side-effects on non-target soil microorganisms, including the N2-fixing bacterium Azospirillum sp., whose agronomic use has been recently adapted (1). Little information has been available on the detoxification processes of agrochemicals in the bacterial cell.
Renato Fani, Enzo Gallori, Enrico Casalone, Mario Polsinelli, Marco Bazzicalupo, G. Di Biase   +5 more
openaire   +2 more sources