[The dynamics of abscisic acid and cytokinins content in the leaves of wheat-aegilops lines and their parental forms affected by powdery mildew].

We studied the dynamics of abscisic acid and cytokinins content in wheat-aegilops lines and their parental forms affected by powdery mildew. Lines 95/99i and 56/99i demonstrated the types of resistance untypical of the soft wheat Rodina and Aegilops speltoides k-389 but typical of Ae. speltoides Tausch from other natural habitats.

[Morphological variability of the wheat powdery mildew in the context of its parasitic adaptation to the lines of wheat Aegilops with different resistance].

We studied the interaction between the pathogen and wheat-Aegilops lines with different resistance as well as their parental forms in the course of powdery mildew infection using scanning electron microscopy. Line 51/99i proved to be similar to the parental form, Rodina variety, by the infection progress. The both genotypes featured pronounced adhesion of the primary infection structures to the surface of the plant epidermal cells in addition to formation of large developed colonies of the fungus, which indicates the partners compatibility.

[Influence of phytohormones on development of conidial inoculum of causative agents of the phlox and barley powdery mildew].

We studied the role of phytohormones: zeatin, kinetin, and abscisic acid, in the regulation of development of the conidial inoculum of Erysiphe cichoracearum DC. f. phlogis Jacz.

[Level of cytokines, abscisic and salicylic acids in the leafs of Phlox under the effect of invasion by conidia of phytopathogens].

We studied the effects of the invasion of Phlox paniculata L. and Ph. setacea L.

[Characteristics of halo formation during pathogenesis as a response of cereal epidermal cells to penetration of powdery mildew pathogens].

A cytophysiological study was carried out of the functional status of a halo as a response of the host plant to contact with a powdery mildew pathogen. Interactions of the powdery mildew causative agents with barley, wheat, wheat-wheat-grass hybrids, wheat-aegilops lines, and aegilops with different genotypic resistance lead to the expression of haloes during pathogens, which are induced by infection pegs of the primary growth tubes appressoria, and hyphal lobes. Haloes are visualized using cytochemical reactions to proteins and scanning electron microscopy.

[Characteristics of bacterial discharge in patients with different forms of pulmonary tuberculosis].

Clinical implications of L-form pulmonary tuberculosis have been investigated in 268 patients. Of them 223 had active respiratory tuberculosis, 45 demonstrated residual disease. New cases of L-form tuberculosis were characterized by poor clinical symptoms and favourable outcomes.

[Clinical significance of drug resistance of tuberculosis mycobacteria and L-forms].

The clinical features of a tuberculous process were studied in 101 patients with active pulmonary tuberculosis among whom 76% of the patients lost their social adaptation. The patients were divided into 2 groups: group 1 comprising 61 (60.4%) subjects who excreted tuberculosis mycobacteria and L-forms and group 2 consisting of 40 (39.

[Fatty acid composition of Escherichia coli cells and their viability in air].

Experiments on E. coli used as a model have revealed that fatty-acid composition is one of the characteristics which determine the viability of bacteria in the air. The viability of microbial cells in the air has been shown to increase with the increase of the pool of cyclopropane acids and the palmitic acid/palmitoleic acid ratio in the cells, irrespective of their genotype and the phase of their growth.

[New species of exoparasitic bacteria of the genus Micavibrio infecting gram-positive bacteria].

A new species of exoparasitic bacteria, Micavibrio aeruginosavorus sp. nov., was isolated on the host bacterium, Pseudomonas aeruginosa.

Peculiarities of the fatty acid composition of Bdellovibrio.

The fatty acid composition of twelve Bdellovibrio strains isolated upon the growth on bacteria of various taxonomic groups was studied. A dependence of the lipid composition of bdellovibrios on that of bacteria they were parasitizing on was shown. Data pointing to the selective incorporation of fatty acids of host bacteria by bdellovibrios were obtained.

Effect of antibiotics on fatty acid composition of strains of E. coli K12 carrying R-plasmids.

A dynamic approach was employed for a study of the reaction of the fatty acid pool of sensitive and resistant strains of E. coli K12 in response to the introduction of antibiotics. Bacteria whose resistance is controlled by plasmids exhibited a specific reaction - a reversible increase in the concentration of cis-9,10-methyl-enehexadecanoic acid.

Use of tetramethylammonium hydroxide to determine the total fatty acid composition of microorganisms.

A destructive chromatographic method of identifying microorganisms is described. The method is based on hydrolysis of the biomass of the microorganisms in the presence of tetramethylammonium hydroxide, followed by introduction of the hydrolyzate into the heated injector of a gas chromatograph. The main products in this case are methyl esters of fatty acids, the composition of which is used as a diagnostic criterion.

Some problems of the ecology and taxonomy of marine microvibrios.

The bactericidal effect of water from the Indian and Pacific oceans and Caspian and White seas on Escherichia coli was studied. It is shown that a decrease in the viability of E. coli cells is accompanied by the appearance and active multiplication of small bacteria of a vibrioid form.

[Fatty acid makeup of Escherichia coli cells with repressed and derepressed phosphohydrolase biosynthesis].

Fatty acid composition of the cells of Escherchia coli wild strains K-10, and K-12 and the mutants of the regulatory genes for alkaline phosphatase was studied in conditions of repression and derepression of biosynthesis of phosphohydrolases. Derepression of phosphohydrolases was not accompanied with specific changes in fatty acid composition of the cells. An increase in the content of cyclopropanic acid in conditions of phosphorus deficiency and a decrease in the level of unsaturated fatty acids are related to deceleration of growth of the cells in these conditions.