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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...
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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...
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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...
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Article
Peculiarities of the SprIR Quorum Sensing System of Serratia proteamaculans 94 and Its Involvement in Regulation of Cellular Processes
The quorum sensing (QS) system SprIR of the psychrotrophic strain Serratia proteamaculans 94 was investigated. A mutant was constructed with the inactivated sprR gene encoding the regulatory receptor protein SprR...
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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...
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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...
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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...
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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 ...
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Article
Removal of Antimicrobial Peptides from Aqueous Solutions Using Carbon Nanotubes
The aim of this work is to study the possibility of removing antimicrobial peptides arenicin-1 and tachyplesin-1 from aqueous solutions using new highly hydrophobic nanomaterials—carbon nanotubes (CNTs) Taunit...
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Article
Bacteria Rhodococcus sp. as Potential Destructors of Detonation Nanodiamonds
The effect of detonation-synthesis nanodiamonds (NDs) on the viability of bacterium Rhodococcus sp. 2012B and its capability for ND biodegradation was determined. It was shown that NDs did not decrease the viabil...
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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...
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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...
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Article
Visualization of the spatial distribution of Ag ions in cyanobacteria Anabaena sp. PCC 7120 by time-of-flight secondary ion mass spectrometry and two-photon luminescence microscopy
Cyanobacteria Anabaena sp. PCC 7120 have been analyzed by time-of-flight secondary ion mass spectrometry and two-photon luminescence microscopy. The reduction of Ag+ ions to silver nanoparticles inside the cells ...
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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...
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Article
The effect of introduction of the Heterologous gene encoding the N-acyl-homoserine lactonase (aiiA) on the properties of Burkholderia cenocepacia 370
To study the role of Quorum Sensing (QS) regulation in the control of the cellular processes of Burkholderia cenocepacia 370, plasmid pME6863 was transferred into its cells. The plasmid contains a heterologous ge...
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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...
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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...
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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...
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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 ...
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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...
