Биология

The paper discusses  a problem concerning the choice of house plants for school biology classrooms in Saratov and Saratov region. A list of house plants for the biology classroom is given. 15 species plants are described according to the principles of choice. The au­ thors give a model of a passport of one the house plants.

The regularities of radiation-induced changes in the population quan­ tity of Staphylococcus aureus, Escherichia coli, Candida albicans in the presence of blue LED light and nanoparticles were studied. The effect of the blue radiation on the bacteria S. aureus was not dose­ dependent.

There were represented that diversified changes  of the cardio­ vascular system's indexes are resulted from human adaptation to the temperature is much down and to the hard local cold temperature effect. People who have adaptation to the work in the cold accommo­ dations have no changes in heart pulse and in arterial pressure dur­ ing the short-term cooling of an arm.

The dynamics of dehydrogenase activity in a southern chernozemic oil-contaminated soil during natural attenuation and by  using two remediation techniques (stimulation of an indigenous microflora and introduction of active oil-oxidizing Dietzia maris strain AM3) was examined in laboratory experiments. It was shown that dehydroge­ nase activity expediently use to estimate the initial bioremediation processes and for monitoring the remediation process by bioaugmen­ tation.

For field experiments  in an effort to elucidate functions  of the wheat lectin (wheat germ agglutinin, WGA), the establishment of varieties sharply  contrasting in the lectin content is  very  important. As  the starting point for solution of this  problem we studied the WGA variability  in the seeds  of 33 spring wheat varieties  obtained in two different breeding centers: Saratov's  and Kharkov’s  those. The vari­ ability  in response to environment for Saratovskaya 29 was  also estimated.

The exo- and endoglycopolymers of the fungus L. edodes were found to be glycoproteins  that, by  their monomeric  composition, were hete- roglycans  with glucose as  the predominant monomer. The structure of the exo- and endoglycoproteins formed by the fungus was found to depend to some extent on the cultivation method used. The carbohy­ drate moieties  of the exo- and endoglycoproteins  were represented by  branched glycans  containing a- and 0-glycosidic  links.

Specific  distributions  features  of distribution of 9 species  of martens in the north of the Lower Volga region have been demostratet. Calcu­ lated width of the spatial niches for these predators and their degree of overlap. Widespread spacies  of martens  in this  region are the weasel, stoat and badger. Black  polecat, pine and stone martens occupy  about half of the possible biotopes, but mink  and steppe polecat are found only in a limited number of habitats.

In 25 km sanitary-hygienic zone of Chinarev oil and gas condensate field in Kazakhstan were inves­ tigated the insects  fauna. From this  territory  known 173 background species  and 12 are rare for Western Region of republic. The insects  of Lepidoptera - Euchromius  rayatellus and Leptidea reali tchuvilin noted for the first time in Volgo-Ural Region.