Biology

Taxonomic Composition of Ground Invertebrates and Their Ratio in Different Types of Deciduous Forests within Tobolsk District of Tyumen Region

Authors: Vazhenina N. V.

The composition and spatial distribution of the surface & litterdwelling mesofauna in leaved forests the indigenous terrace of the Irtysh river are analyzed on the basis materials of accounting for invertebrates by soil traps. The surveys were carried out in 2005–2010 in three types of forests – aspen forest, lime forest and birch forest, located within Tobolsk district of the Tyumen region (southern taiga, Western Siberia). As a result, 281 species of invertebrates were identified in forests, about 50% of which were in the families Carabidae, Staphylinidae and Linyphiidae.

Some Features of Growth of Etiolated Plants in the Aspect of Implementation of Donor-Acceptor Relations

Authors: Shevlyagina О. F., Korobko V. V.

The object of the study was sprouts of spring soft wheat Triticum aestivum L. Cultivation was carried out in a climatic chamber at a temperature of 18 ± 1° C. As a control, plants grown during the photoperiod day / night 16/8 were used. Some features of the growth and development of Triticum aestivum L. plants were revealed under etiolation conditions. It was established that differences in the length of the root system of etiolated and control seedlings are determined by the length of the roots of the upper tier.

Influence of Probiotic “Bifidumbacterin” on the State of Large Intestine Microbiocenosis, Activity of the Antioxidant System and Processes of Lipid Peroxidation in the Conditions of Gentamycin-Associated Dysbiosis and Anomalous Characteristics of the Magn

Authors: Verevkina N. N., Medvedeva O. A., Korolev V. A., Shevchenko A. V., Kalutsky P. V.

Disturbances in the composition of microbiocenoses are warnings of changes in the physiological status of the organism, associated with the inhibition of immunobiological protection of the organism, its allergization, chronic intoxication, and increased susceptibility to infectious diseases. Some studies confirm the effect of magnetic radiation on abnormal characteristics both on the viability and growth rate of bacteria, and on the activity of various systems, in particular the antioxidant system and the lipid peroxidation system.

Study of the Morphological Features of the Cells of the Bacteria Yersinia pestis, Grown at Different Temperatures by Atomic Force Microscopy

Authors: Utkin D. V., Bulgakova E. G., Erokhin P. S., Kuznetsov O. S., Kuklev V. E., Osina N. A.

Atomic force microscopy in the study of bacterial cells allows the determination of such morphological parameters as: length, width, cell thickness, its perimeter, cross-sectional area, volume and root mean square roughness of the cell surface, which depends on the degree of laying of peptidoglycan and density of lipopolysaccharide. The aim of this work was to study the changes in the morphological parameters of the cell and the cell surface of bacteria when the temperature conditions of the culture medium change on the Y. pestis model.

Current Status of the Collection Fund of the Laboratory of Ornamental Plants of the Russian Academy of Sciences

Authors: Bondorina I. A., Kabanov A. V., Mamaeva N. A., Khokhlacheva J. A., Bumbeeva L. I.

The Collection Fund of the Laboratory of Ornamental Plants of the Main Botanical Garden named after N. V. Tsitsin of the Russian Academy of Sciences has currently 1055 species and varieties, as well as 4 995 varieties and garden forms. It was created on the basis of classical methods of introduction, such as (ecology)-geographical, phytocoenotic and the method of generic complexes. At the same time, the modern policy of forming the collection fund is aimed at creating not only large but also unique collections.

Modern Cadastre of Species of Tularemia Microbe Carriers Habitant in Tularemia Foci of Different Types, Situated in the Territory of Russia

Authors: Tarasov M. A., Porshakov A. M., Kazakova L. V., Kresova U. А., Romanov R. A., Sludsky A. A.

The tularemia microbe can be found in all landscape zones of the Northern hemisphere, and in the Russian Federation this infection has been detected in virtually all regions. It spreads beyond the polar circle up to the 71° parallel. From 100 to 400 cases of tularemia infection are registered in the Russian Federation annually, 75% of which are accounted for the Northern, Central and Siberian territories of the country. From time to time epidemic morbidity rates are reported. Presently, six types of natural tularemia foci are established in Russia.

Impact of the Predator on Quality Indicators Grain of Soft Wheat

Authors: Kulevatova T. B., Zlobina L. N., Beketova G. A., Starichkova N. I.

The aim of this study was to identify the effect of precursor (vapor, winter wheat) on the non-traditional selective grain quality parameter intensity of spring common wheat. The parameters include dough development time, dough stability, energy absorbed by dough while kneading and starch retrogradation coefficient. The data have been obtained using a Mixolab device.

Low Temperature Preservation of an Economically Important Cyanophyta Species (Spirulina, Arthrospira)

Authors: Petrukhina D. I.

Spirulina and Arthrospira cyanoprokaryota species include a wide variety of laboratory microorganism culture collections and their traditional storage by means of isolate passages does not provide long-term preservation. The rationale for this study is to evaluate the possibility of long-term low temperature storage of Spirulina subsalsa and Arthrospira platensis cyanoprokaryota. Cyanoprokaryota biomass was stored for 12 months at minus 80 °С. The cooling rate was minus 1 °С.

Photodynamic Diagnostics of Stomach Cancer

Authors: Agranovich I. M., Khorovodov A. P., Mamedova A. T., Shnitenkova A. A., Shimanova V. E., Novolokin N. A., Vashenko T. S., Kanevsky M. V., Galitskaya A. A., Konnova S. A., Borisova E. G., Semyachkina-Glushkovskaya O. V.

Cancer of the stomach is the main cause of death among cancer diseases of the gastrointestinal tract. This is due to the late diagnosis. This study was aimed at developing new methods for diagnosis of gastric cancer using a photosensitizer 5-ALK / PIXIX. The experiments were carried out on white non-native rats with an average mass of 250 grams. The animals were divided into 2 groups: control and experimental (stress + nitrosamine diet).

Investigation of Interaction Between Silicon-Based Nanoparticles and HeLa Cells

Authors: Terin D. V., Bratashov D. N., Revzina E. M., Rokakh G. E.

This work is about the investigation of the interaction of porous silicon submicron particles with the HeLa cervical cancer cell line. Substrates of the porous silicon were obtained with the two-staged chemical method based on synthesis of silver nanoparticles from silver nitrate AgNO3 with the subsequent etching with fluoric acid HF in the presence of hydrogen peroxide H2O2 and mechanical separation of microparticles by shattering. The thickness of the obtained porous silicon layer measured by scanning electrom microscopy (SEM), was about 2 mkm.

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