23 Result(s)

Article

Specific Response of Bacterial Cells to the Action of β-Ionone

The biological activity and mechanisms of action of the unsaturated ketone β-ionone, a volatile compound of serious interest for biotechnology, medicine, and agriculture, have been studied. Using specific lux-bio...

D. E. Sidorova, O. E. Melkina, O. A. Koksharova, E. N. Vagner, I. A. Khmel… in Microbiology (2024)

Article

The effects of secondary bacterial metabolites on photosynthesis in microalgae cells

Secondary metabolites of bacteria are regulatory molecules that act as “info-chemicals” that control some metabolic processes in the cells of microorganisms. These molecules provide the function of bacteria co...

O. A. Koksharova, N. A. Safronov in Biophysical Reviews (2022)

Article

Modulation of Arabidopsis thaliana growth by volatile substances emitted by Pseudomonas and Serratia strains

Many volatile compounds secreted by bacteria play an important role in the interactions of microorganisms, can inhibit the growth of phytopathogenic bacteria and fungi, can suppress or stimulate plant growth a...

V. A. Plyuta, A. S. Chernikova… in World Journal of Microbiology and Biotechn… (2021)

Article

Hydrocarbon-Oxidizing Bacteria from Urban Lake Beloye (Moscow): Identification and Phylogenetic Analysis

Cultured hydrocarbon-oxidizing bacteria have been isolated for the first time from bacterioplankton in urban Lake Beloye (Moscow). The taxonomic positions of two bacterial strains (2012B and 2012C) isolated fr...

T. R. Kravzova, V. V. Ilinsky, I. V. Lazebnaya, O. E. Lazebny… in Inland Water Biology (2020)

Article

Filamentous Cyanobacteria as a Prototype of Multicellular Organisms

Filamentous cyanobacteria belong to the oldest organisms on our planet. Many cyanobacteria exist in the form of trichomes, i.e., cell chains comprising hundreds of cells connected by intercellular interactions...

T. V. Potapova, O. A. Koksharova in Russian Journal of Plant Physiology (2020)

Article

Effect of inactivation of luxS gene on the properties of Serratia proteamaculans 94 strain

The luxS gene is responsible for the synthesis of AI-2 (autoinducer-2), a signaling molecule that participates in quorum sensing regulation in a large number of bacteria. In this work, we investigated which pheno...

Yu. V. Zaitseva, V. A. Lipasova, V. A. Plyuta, O. A. Koksharova… in Folia Microbiologica (2019)

Article

Synthesis of Silver Nanoparticles with the use of Herbaceous Plant Extracts and Effect of Nanoparticles on Bacteria

The screening of aqueous extracts of herbaceous plants that grow on the territory of the Russian Federation with their subsequent use for the biosynthesis of silver nanoparticles (SNPs) in accordance with the ...

D. E. Sidorova, V. A. Lipasova, V. A. Nadtochenko… in Applied Biochemistry and Microbiology (2018)

Article

Nanocomplexes on the basis of Taunit associated with biocides as effective anti-cyanobacterial agents

Cyanobacteria are photoautotrophic bacteria that are known also as blue-green algae. They accumulate on different surfaces and objects and contribute to their biodegradation. Moreover, cyanobacteria produce to...

A. V. Timofeeva, V. N. Tashlitsky, A. G. Tkachev… in Russian Journal of Plant Physiology (2017)

Article

Neurotoxic non-proteinogenic amino acid β-N-methylamino-L-alanine and its role in biological systems

Secondary metabolites of photoautotrophic organisms have attracted considerable interest in recent years. In particular, molecules of non-proteinogenic amino acids participating in various physiological proces...

A. A. Popova, O. A. Koksharova in Biochemistry (Moscow) (2016)

Article

Production of gold nanoparticles by biogenesis using bacteria

Diazotrophic cyanobacteria Anabaena sp. PCC 7120, four Nostoc strains, and two Azotobacter species (A. vinelandii and A. chroococcum) were found to produce gold nanoparticles (GNP) under nitrogen fixation conditi...

M. A. Radtsig, O. A. Koksharova, V. A. Nadtochenko, I. A. Khmel’ in Microbiology (2016)

Article

The ability of natural ketones to interact with bacterial quorum sensing systems

The effect of natural ketones emitted by bacteria (2-nonanone, 2-heptanone, and 2-undecanone) on the functioning of the Quorum Sensing (QS) systems was studied. In this work, three lux-reporter strains contain...

V. A. Plyuta, A. A. Popova, O. A. Koksharova… in Molecular Genetics, Microbiology and Virol… (2014)

Article

Bacteria and phenoptosis

Genetically programmed death of an organism, or phenoptosis, can be found not only in animals and plants, but also in bacteria. Taking into account intrapopulational relations identified in bacteria, it is eas...

O. A. Koksharova in Biochemistry (Moscow) (2013)

Article

The pleiotropic effects of ftn2 and ftn6 mutations in cyanobacterium Synechococcus sp. PCC 7942

Two cell division mutants (Ftn2 and Ftn6) of the cyanobacterium Synechococcus sp. PCC 7942 were studied using scanning electron microscopy and transmission electron microscopy methods. This included negative stai...

O. A. Gorelova, O. I. Baulina, U. Rasmussen, O. A. Koksharova in Protoplasma (2013)

Article

Molecular phylogeny of a green microalga isolated from White Sea sponge Halichondria panicea (Pallas, 1766)

Molecular identification of eukaryotic microalga 1Hp86E-2 isolated from White Sea sponge Halichondria panicea (Pallas, 1766) was conducted, and phylogenetic analysis was carried out using the nucleotide sequence ...

T. R. Kravtsova, I. V. Lazebnaya, O. E. Lazebny… in Russian Journal of Plant Physiology (2013)

Article

Comparative and evolutionary aspects of cyanobacteria and plant plastid division study

The review summarizes the current understanding of cyanobacterial cell division mechanisms in comparison with those of eukaryotic plastids. It also sheds light on the present knowledge of the nature of evoluti...

A. E. Vasetenkov, O. A. Koksharova in Russian Journal of Plant Physiology (2013)

Article

Green microalgae isolated from associations with white sea invertebrates

O. A. Gorelova, O. I. Baulina, A. E. Solovchenko, T. A. Fedorenko… in Microbiology (2012)

Article

Application of molecular genetic and microbiological techniques in ecology and biotechnology of cyanobacteria

The review discusses the advances and problems in biotechnology and ecology of cyanobacteria and considers the possibilities of molecular genetic and microbiological techniques in this field. Due to the ease o...

O. A. Koksharova in Microbiology (2010)

Article

Activation of bioluminescence of sensor Escherichia coli srains used to detect N-acyl-homoserine lactones in presence of nitrofurans and NO generators

Nitrofurans (nitrofurazone, nitrofurantoin, furazidin, nifuroxazide) and nitric oxide generators (sodium nitroprusside and isosorbide mononitrate) in subinhibitory concentrations were shown to significantly in...

Yu. V. Zaitseva, V. G. Granik, A. S. Belik… in Molecular Genetics, Microbiology and Virol… (2010)

Article

Antibacterial effects of silver ions on growth of gram-negative bacteria and biofilm formation

The average minimal inhibiting concentrations (MICs) of AgNO₃ for the gram-negative bacteria Escherichia coli K12, Serratia proteamaculans 94, and Serratia liquefaciens MG1 were found to be 0.075–0.3 μg/ml and, f...

M. A. Radzig, O. A. Koksharova, I. A. Khmel’ in Molecular Genetics, Microbiology and Virol… (2009)