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  1. No Access

    Article

    Immobilization of Azospirillum Bacteria on Various Carriers

    A significant part of research in environmentally friendly agroindustrial production is aimed at immobilized bacterial preparations with retained capacity for active growth without loss of metabolic activity b...

    M. A. Kupryashina, E. G. Ponomareva, T. E. Pylaev in Microbiology (2024)

  2. No Access

    Article

    Dose-Dependent Effects of Azospirilla Lectin on the Growth of Wheat Seedlings Under Salt Stress

    The dose-dependent effect of the A. brasilense Sp7 lectin on the roots of 4-day-old wheat seedlings (Triticum aestivum L. cv. Saratovskaya 29) grown under simulated salt stress was studied. In the roots of wheat ...

    S. A. Alen’kina, M. A. Kupryashina in Applied Biochemistry and Microbiology (2024)

  3. No Access

    Article

    Optimization of Bioformation of Silver Nanoparticles Using Azospirillum brasilense Cultures

    Herein we present the results of optimization of silver nanoparticles biosynthesis using a nonpathogenic soil bacterium Azospirillum brasilense. The conditions and parameters for synthesis of biogenic nanoparticl...

    M. A. Kupryashina, E. P. Vetchinkina, A. S. Abdrakhmanova, E. G. Ponomareva… in Microbiology (2023)

  4. No Access

    Article

    Ability of Bacteria of the Genus Azospirillum to Decolorize Synthetic Dyes

    This is the first report on ability of bacteria of the genus Azospirillum to decolorize synthetic dyes. Screening revealed A. brasilense strain SR80 to exhibit the highest decolorization efficiency. The discolora...

    M. A. Kupryashina, E. G. Ponomareva, V. E. Nikitina in Microbiology (2020)

  5. No Access

    Article

    Extracellular Laccase Activity of Bacteria of the Genera Azospirillum and Niveispirillum

    The ability to produce extracellular laccase by strains of Azospirillum (A. brasilense Sp7, Sp107, Sp245, SR80, A. lipoferum SR42, Sp59b, A. picis TAR-3, A. tiophilum Bv-S, and A. amazonense Am) and Niveispirillu...

    E. G. Ponomareva, M. A. Kupryashina, E. P. Vetchinkina, V. E. Nikitina in Biology Bulletin (2019)

  6. No Access

    Article

    Phenol Oxidase Activity of Azospirillum brasilense Sp245 Mutants with Modified Motility and Azospirillum brasilense Sp7 Phase Variants with Different Plasmid Composition

    Herein, we reveal the alteration in phenol oxidase enzymes complex production from Azospirillum brasilense Sp245 omegon mutants with polar and lateral flagella dysfunction and from A. brasilense Sp7 phase variant...

    E. G. Ponomareva, M. A. Kupryashina, A. V. Shelud’ko, L. P. Petrova… in Microbiology (2018)

  7. No Access

    Article

    Biosynthesis of silver nanoparticles with the participation of extracellular Mn-dependent peroxidase from Azospirillum

    The accumulation of nanoparticles of colloidal silver with spherical shape in culture liquid of Azospirillum brasilense has been shown by transmission electron microscopy. Bacterial extracellular Mn-peroxidases w...

    M. A. Kupryashina, E. P. Vetchinkina… in Applied Biochemistry and Microbiology (2016)

  8. No Access

    Article

    Ligninolytic activity of bacteria of the genera Azospirillum and Niveispirillum

    Capacity of associative soil bacteria of the genera Azospirillum and Niveispirillum for degradation of lignin model compounds was demonstrated. Lignin and Mn peroxidases were detected in the culture liquid of the...

    M. A. Kupryashina, S. V. Petrov, E. G. Ponomareva, V. E. Nikitina in Microbiology (2015)

  9. No Access

    Article

    Biosynthesis of gold nanoparticles by Azospirillum brasilense

    Plant-associated nitrogen-fixing soil bacteria Azospirillum brasilense were shown to reduce the gold of chloroauric acid to elemental gold, resulting in formation of gold nanoparticles. Extracellular phenoloxidiz...

    M. A. Kupryashina, E. P. Vetchinkina, A. M. Burov, E. G. Ponomareva… in Microbiology (2013)

  10. No Access

    Article

    Isolation and purification of Mn-peroxidase from Azospirillum brasilense SP245

    Homogenous Mn-peroxidase of a 26-fold purity grade was isolated from a culture of Azospirillum brasilense Sp245 cultivated on a medium containing 0.1 mM pyrocatechol. The molecular weight of the enzyme is 43 kD a...

    M. A. Kupryashina, N. Yu. Selivanov… in Applied Biochemistry and Microbiology (2012)