Весці Нац. акадэміі навук Беларусі, Сер. біял. навук, 1998, No.2
/ Выданні акадэміі / Навуковыя часопісы
Весці Нац. акадэміі навук Беларусі, Сер. біял. навук, 1998, No.2
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Весці Нацыянальнай акадэміі навук Беларусі
СЕРЫЯ БІЯЛАГІЧНЫХ НАВУКВыдавец: Выдавецкі дом Беларуская навука, Мінск, Рэспубліка Беларусь |
Нумар 2, 1998
ЗМЕСТ
АРТЫКУЛЫ
Sidorovich E. A., Kutas E. N.
Seasonal correlation in microcloning of introduced red and great bilberry cultivars in vitro experiments. pp. 5--9
Summary: The paper presents the results of the authors experimental studies concerning the influence of the explant selection season of introduced varieties of bog bilberry and red bilberry on their regenerative ability in in vitro culture.
Rupasova Zh. A., Kukhareva L. V., Ignatenko V. A., Varavina N. P., Rudakovskaya R. N., Vasilevskaya T. I.
Seasonal dynamics of bioactive compounds in Belarus varieties of pot marjoran. pp. 10--15
Summary: Profiling tendencies in seasonal dynamics of carbohydrates: organic acids, terpenoids and bio-flavonoids in plants of pot marjoran introduced in soil-climatic conditions of Belarus are presented. Optimal terms for collection of herbs are justified.
Reshetnikov V. N., Lapteva O. K., Sosnovskaya T. F., Chyzhick O. V., Roshchenko M. V., Spiridovich E. V.
Protein complex of interphase cell nuclei in Secale cereale during genome expression. pp. 16--20
Summary: Investigation of the composition of isolated interphase nuclei from the winter rye dry embryos and 24- and 72-hour seedlings has shown, that genome expression is accompanied by the following factors: increased protein and RNA content in nuclear karioplasma and in the matrix, enhanced protein heterogeneity in 12--24 kD, range, changes in proteolytic activity and enzyme composition.
Prokhorov V. N., Laman N. A.
Correlation of nitrogen supply with photosynthetic parameters and productivity of spring barley crops. pp. 21--27
Summary: Stationary field on trials on sod podzol loamy soil at varying doses and periods of nitrogen supply have established that elevated crop nitrogen loading reduces correlation between studied photosynthetic parameters and grain productivity. Optimal formation of leaf surface in seedlings is characterized by high increase of leaf photo-synthetic potential up to the phase of intense growth and lesser values prior to flag-leaf phase.
Rakhteyenko L. I., Fedotova I. N., Zhivulkina E. V., Savelyev V. V., Piskunov V. S.
Some aspects of growth and functioning of assimilatory systems in pine plantlets during postirradiation period. pp. 28--33
Summary: Soil contamination with Chernobyl fall-out products (doses of 180 Ci/km2 and higher) at early stages of pine ontogenesis (1-year seedlings) negatively affected growth and major functions of pine needles primarily in the first 2--3 years after replanting exposed variants to plots with natural radiation background. This life span resulted in sharp decrease of main biometrics traits (length and width of needles) and some physiological parameters (photosynthesis, chlorophyll content). In later years recovery processes in plants subjected to ionizing ray exposure gradually brought back these parameters to control values.
Vishnyakov S. V.
Regulation of photochemical activity in structurally distinct chloroplasts by endogenous protein effector. pp. 34--36
Summary: The regulation of the I and II class chloroplast photosynthetic activity by externally supplied endogenous chloroplast effector was found in vitro. The Hill reaction was activated more intensely in intact chloroplasts than in organelles with disrupted external envelope. The process of photophosphorylation was inhibited to the same extent in both classes of chloroplasts.
Titok V. V., Yurenkova S. I., Khotyleva L. V.
Energy metabolism in leaves of tomato cultivars and F1-hybrids. pp. 37--41
Summary: The activity of glycolysis, oxidative pentose phosphate pathway and electron transport chain of mitochondria was studied in green leaves of parental forms and F1-tomato hybrids differing in productivity. Glycolysis and oxidative pentose phosphate pathway responses are inactivated and energy expenses ensured by photosynthesis and mitochondrial respiration in leaves of hybrid forms. Glycolysis, oxidative pentose phosphate pathway and electron transport chain of mitochondria are not inhibited in parents. In the latter the energy metabolites formed don't seem to be used to a great extent in biosynthesis that can cause low productivity of parental forms.
Urbanovich O. Yu., Kartel N. A.
Cloning and analysis of new repetitive DNA sequences from rye and wheat genomes. pp. 42--46
Summary: DNA highly repetitive sequences 1700bp long were cloned from rye and wheat genomes. The sequences were dispersed in the genomes of rye, wheat and barley. They demonstrated interspecific polymorphism and lack of intraspecific differences in a hybridization pattern. The homology level between the tested DNA repetitive sequences from rye and wheat genomes is in the range of 85--93% allowing to affiliate them to the same family.
Bazhanov D. P.
Colonization of barley roots by Flu- and Fluc mutants of rhizobacterial strain Pseudomonas fluorescens 49. pp. 47--49
Summary: A microplot field experiment was carried out to assess colonization of barley roots by rhizobacterial strain Pseudomonas fluorescens 49, its mutants non-producing fluorescent siderophore (Flu-) and producing it constitutively (Fluc). No significant differences in the density of seedling roots colonization were observed between genetically altered and parent strains. In the course of plant growth the number of Fluc bacteria on the roots decreased as compared with Flu+ and Flu- ones. The instability of Fluc strain was not the major reason for its population decline during vegetation.
Kozlova N. M., Antonovich A. N., Smolentseva L. V., Kut'ko A. G., Chernitsky E. A.
Antioxidant effect offlint-activated water on erythrocyte membranes. pp. 50--52
Summary: It is shown that the water infused with the flint powder activates the antioxidizing enzymes of human erythrocytes (superoxide dismutase, catalase and glutathione peroxidase) and inhibits the lipid peroxidation of erythrocyte membranes. Judging from relationship between the concentration of flint powder in the water and its effects, the inhibition of lipid peroxidation raises the ratio of membrane-bound hemoglobin and SH-groups in erythrocyte ghosts. Another run of concentration curve was observed for the coefficient of pyrene eximerization and for the kinetic parameter of activity of lipid-dependent enzyme acetylcholinesterase, suggesting the existence of another mechanism of activated water action-direct decrease of lipid bilayer viscosity.
Lobanok A. G., Mikhailova R. V., Pavlovskaya Zh. I., Moroz I. V.
Glucose oxidase and catalase production by fungi of Aspergillus genus. pp. 53--56
Summary: Screening of aspergilli producing glucose oxidase has established that -- 40.3% out of 62 strains belonging to 17 species of Aspergillus genus were capable to synthesize glucose-transforming enzyme. The active strains were shown to generate glucose oxidase and catalase in submerged and solid culture. The following sources of afore -- mentioned enzymes were selected for further studies: A.niger UZPK, A.microcephalus, A.alliaceus HMM-IV-7 and A.alliaceus HMM-IV-19.
Mikhailova R. V., Shishko Zh. F., Yasenko M. I.
Effect of nutrient components on biosynthesis of extracellular glucose oxidase by Penicillium funiculosum G-15. pp. 57--60
Summary: The effect of major nutrient components on biosynthesis of extracellular glucose oxidase by P. funiculosum in submerged culture was investigated. The fungus was found to display good growth and ability to synthesize enzymes on all 11 tested carbon sources, with top activity demonstrated on sucrose, glucose and mannitol medium. Potassium nitrate proved the optimal nitrogen source. The stimulating effect of Fe2+, Mn2+ ions, Tween 85, wood hydrolyzate, malt extract and CaCO3 on exryme synthesis was established. Research resulted in optimization of nutrient media for glucose oxidase production in P. funiculosum G-15.
Yelchaninova M. A., Bankovsky A. A.
Oxidation of aliphatic alcohols by methylotrophic yeasts. pp. 61--63
Summary: We studied the efficiency of different strains of methylotrophic yeast in relation to the primary oxidation of low-molecular-weight compounds. It was shown that the presence of ammonia favoured increased oxidative capacity of Pichia angusta cells with respect to methyl alcohol.
Vlasova V. I., Shadyro O. I., Shilov G. N.
Anticonvulsive effect of antioxidant 3,5-di-tret-butylpyrocatechol. pp. 64--66
Summary: The anticonvulsive action of 3,5-di-tret-butylpyrocatechol possessing also antioxidant activity has been studied in mice. It was found that connection of 3,5-di-tret-butylpyrocatechol and anticonvulsant seduxen in separately ineffective doses causes essential synergistic anticonvulsive effect in various experimental models.
Chura N. A., Kamyshenko V. G., Murzenok P. P.
Types of animal behavioral response to combined ionizing ray and thermal treatment. pp. 67--71
Summary: Changes in behavioral response of rats to combined exposure to low doses of ionizing radiation and heat were studied. Strong type animals with prevailing excitatory processes were found to be more sensitive to the combined action of the factors than balanced type rats. This was evident as decreased locomotion both at the end of one-month treatment cycle and in remote periods (3--5 months).
Chaplinskaya E. V., Lukashevich V. S., Kalyunov V. N.
Enzyme immunoassay of nerve growth factor (b-NGF) in animal and human biological fluids. pp. 72--75
Summary: A version of two-site enzyme immunoassay (EIA) for nerve growth factor (b-NGF) is proposed. It involves the use of affinity-purified antibodies, polystyrene plates as solid phase, and horse-radish peroxidase as enzyme marker. The sensitivity of this EIA is 10--60 pg/sample. With the help of this method the b-NGF levels in serum of mice and rats were estimated. A five-fold increase in NGF concentration during epilepsy as compared to normal donor serum was found.
Tsihun G. F.
Aerobic energy supply to rat tissues of different age upon prolonged ionizing ray and thermal exposure. pp. 76--79
Summary: Energy-producing functions of brain, myocardiac, and hepatic mitochondria in mature and immature rats in remote period after prolonged ionizing ray and thermal exposure were studied. A higher resistance of young rats, as compared to adult ones, to combined radiational-thermal treatments was established.
Bozhko A. P., Gorodetskaya I. V.
Effect of thyroid hormones on increased body resistance to thermal stress. pp. 80--83
Summary: Small thyroid hormone doses restrict hyperthermia and ulceration of gastric mucosa under isolated and combined with immobilization heat stresses, reduce gain in relative mass of the adrenal glands and in that of spleen decrease under heat effect and prevent them under the combined impact resulting in increase in rat survival rate. Existence of thyroid mechanism forming organism resistance to different environmental extremal factors is discussed.
Mikulich E. L.
Structural-functional pathological changes in rennet of dyspeptic calves. pp. 84--87
Summary: Structural-functional pathological shifts in dyspeptic calves are accompanied with degenerative mucosal changes and reduced functional activity of rennet glands.
Khandogy A. V., Pikulick M. M.
Effect of draining amelioration strategy on structure of amphibian populations in river floodbeds of diverse geobotanical subzones in Belarus. pp. 88--93
Summary: The date are presented on the estimate of influence of the drainage reclamation on the inhabitants structure of amphibians in the river valleys of different geobotanical subzones of Belarus.
Zarubov A. I.
Taxonomic zooperiphyton structure in some water basins affected by Chernobyl accident. pp. 94--98
Summary: The zooperiphyton communities in Pripyat and Dnieper flood-land basins were investigated in 1994--1996. Sorensen index plus Shannon and Margalef indexes of species diversity were calculated. Zooperiphyton population size and range are determined by macrophytes species.
Dombrovsky V. Ch.
Behaviour of rook (Corvus frugilegus) and grey crow (Corvus corone cornix) wintering in central Belarus as a function of reproductive season. pp. 99--101
Summary: The analysis of changes in body weight and fat deposits of rook and hooded crow has shown that both species maintained positive energetic balance during wintering period and were in a good physiological state by spring. The behaviour of both species has changed to increasing diurnal resting time. The total decrease in moving activities was recorded for rook. Probably, earlier terms of hooded orow egg laying recorded in large towns are the result of emergence of settled synanthropous populations. Obviously, it is caused by settling urbic landscapes as favourable wintering sites for rook and hooded crow.
Shimalov V. V., Shimalov V. T.
The worms of Opisthorchidae family (Trematoda, Fasciolida) -- parasites of wild animals in Belarus Polessie and their medical significance. pp. 102--105
Summary: Among 5 species of worms of Opisthorchidae Braun, 1901 family distributed in Belarus Polessie of medical significance are Opisthorchis felineus (Rivolta, 1884), Pseudamphistomum truncatum (Rudolphi, 1819), Metorchis albidus (Braun, 1893). The natural hotbeds of opisthorchidae infection in Polessie are supported by 8 species of ravenous mammals and I rodent species. The role of drainage channels as potential sources of above-mentioned infection was originally demonstrated. The possibility of parasitizing in Belarus residents of 3 opisthorchidae species was stressed which is essential for final medical diagnosis.
КАРОТКІЯ ПАВЕДАМЛЕННІ
Obukhovskaya L. V.
Effect of water-soluble protein fraction from mitochondria on electron transport in chloroplasts of different structural state. pp. 106--108
Summary: The effect of the water-soluble protein fraction from mitochondria on photochemical activity of chloroplasts differing in structural status was studied. This fraction enhanced permeability of chloroplast envelope for ferricyanide. It is presumed that degradation of chloroplast outer membrane may be induced by water-soluble protein fraction from mitochondria.
Daineko N. M., Mironenko V. I.
Mathematical model of cenopopulation density dynamics in meadow agroecosystems. pp. 109--111
Summary: Mathemalical model reflecting joint growth of Poa pratensis L. and Dactylis glomerata L. is based on dynamics of specific cenopopulation densities.
АНАТАЦЫІ ДЭПАНІРАВАНЫХ АРТЫКУЛАЎ
Bankovsky A. A., Elchaninova M. A.
Vitamin correction of pathological shifts in the body induced by g-irradiation. p. 112
АГЛЯДЫ
Pikulik M. M.
Ecological knowledge -- the basis of conservation and rational use of natural resources. pp. 113--114
ВУЧОНЫЯ БЕЛАРУСІ
Волотовский И.Д., Сущеня Л.М., Хотылева Л.В., Астапович Н.И.
Анатолий Георгиевич Лобанок (К 60-летию со дня рождения). C. 115--117
Націсніце тут, каб прачытаць артыкул
Сущеня Л.М., Лобанок А.Г., Никифоров М.Е., Пленин А.Е.
Михаил Михайлович Пикулик (К 50-летию со дня рождения). С. 118--120
Націсніце тут, каб прачытаць артыкул
/ Выданні акадэміі / Навуковыя часопісы / Да пачатку старонкі
Распрацавана і падтрымліваецца Мікалаем М. Касцюковічам. Апошняе абнаўленне: 9 снежня 2006 г.
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