СЕРИЯ БИОЛОГИЧЕСКИХ НАУК
Издатель: Издательский дом Беларуская навука, Минск, Республика Беларусь
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Известия Национальной академии наук Беларуси СЕРИЯ БИОЛОГИЧЕСКИХ НАУК Издатель: Издательский дом Беларуская навука, Минск, Республика Беларусь |
Summary: It is determined that optimum substrate for container growing of creeping juniper and common yew is surface peat, for growing common juniper and Korean cedar -- surface peat with dry additions of fertilizers, for growing mountain pine - surface peat with mineral fertilizers and humus.
Volynetz A.P., Zankevich N.P.
Flavonoid glycosides in brandispores of rye rustiform fungi. pp. 8--11
Summary: Flavonoid complex in brandispores of rye rustiform fungi similar to that in host plants was originally detected and characterized.
Alexeychuck G.N., Reutsky V.G.
Effect of exogenous conditions on seed swelling. pp. 12--15
Summary: Distinctions in barley seed swelling dynamics under different exogenous conditions were revealed by investigation of initial stages of water uptake. It was assumed that the modifications of seed swelling process influence on the activity of germination processes and the increasing of plant resistance to stress.
Yakovlev A.P., Mayseenok A.P.
Effect of doses and combinations of fertilizers on major nutrients in surface peat under cranberry plantations in Vitebsk region. pp. 16--19
Summary: Differences in contents of assimilate forms of the nitrogen the phosphorus and the potassium in upper stratum of peatbogs after separate and combined introduction of mineral fertilizers on the plantations of american cranberry were demonstrated using classical 8-variant scheme.
Yakovlev A.P., Rupasova Zh.A., Volchkov V.E.
Effect of mineral nutrition on growth of cranberry cultivars in northern Belarus. pp. 20--24
Summary: Response of cranberry bioproductive parameters to variations of mineral background in Vitebsk region was assessed.
Ivanova E.A., Vafina G.H.
Antioxidant activity of peroxidase system in supramolecular structures of cellular nuclei in postambryonal phase of wheat ontogenesis. pp. 25--29
Summary: Determination of overall antioxidant activity of peroxidase system in supramolecular structures of cellular nuclei was carried out in correlation with physiological phases of wheat seedlings from dormant air-dry germs (0 h), their germination (24 h) until coleoptile growth (48 h ® 96 h) and outbreak of the first leaf from the coleoptile (120 h). A weak overall antioxidant activity was shown in the air-dry germs. Each developing organ displays specificity of redox reactions in peroxidase system and the maximum activity is exhibited in nucleoplasm of internode during formation of plant stem-root carcass.
Sakovich V.I.
Genetic variability components of quantitative traits in flax. pp. 30--33
Summary: Gene effects and interactions were studied for the traits of seed productivity and fiber in the system of diallel crossings. Dominance in the tested group of varieties and their hybrids was revealed to be aimed at promoting all analysed traits.
Podlisskikh V.E., Voronkova E.V., Anoshenko B.Yu.
Expression and heritability of functional pollen fertility in interspecific diploid potato hybrids. pp. 34--38
Summary: Functional pollen fertility (FPF) was studied in 330 complex potato hybrids including germplasm of S. tuberosum and some other diploid Solanum species. Hybrids were obtained from 30 crossing combinations between 10 female and 4 male diploid potato clones (test crosses). FPF was estimated by the frequency of germinated nonsterile pollen grains (FPF in vitro). It was found that about 52% of all studied hybrids had the low level of FPF in vitro (less than 5%). Heritability of FPF in vitro estimated by interclass correlation was 10.3% The method used for the FPF estimation showed that about 80% of all hybrids had the FPF level less than 10%. This means that low FPF of complex diploid potato hybrids comprising S. tuberosum germplasm can arouse problems for crossing experiments in diploid potato breeding. More precise evaluation of FPF using in vitro methods needs optimisation of test systems for pollen germination.
Gordey I.A., Belko N.B., Lyusikov O.M., Shchetko I.S., Bychenko A.P.
Crossability peculiarities of di- and tetraploid rye with hexaploid triticales. pp. 39--42
Summary: The article presents the findings on crossability of di- and tetraploid winter rye with hexaploid triticales during secalotriticum formation. Change in seed setting and germination of 28- and 35-chromosome hybrid caryopses was analysed depending on basic factors of the incompatibility level in crossing components.
Shalygo N.V.
Composition of porphyrins in pigment mutants Scenedesmus obliquus. pp. 43--45
Summary: The accumulation of chlorophyll a and b and its porphyrin precursors such as protoporphyrin IX (PP), Mg-protoporphyrin IX (monomethyl ester) [MP(E)] in cells of pigment mutants Scenedesmus obliquus in the dark was demonstrated. The amounts of PP and MP(E) in the photosensitive mutant PGC-910 in darkness and in light were higher in comparison with the porphyrin amounts in the greening mutant PGC-912 at the same conditions. The photodynamic effect induced by PP and MP(E) in cells of the photosensitive mutant under illumination is discussed.
Kozlova N.M., Slobozhanina E.I., Komissarova S.M., Chernitsky E.A. †
Changes in properties of erythrocyte membranes induced by coronary disease. pp. 46--48
Summary: Changes in concanavalin A-induced agglutination and activity parameters of membrane-bound acetylcholinesterase of erythrocytes from coronary disease patients as correlated with case severity were investigated. Aggravation of pathology was found to raise in blood percentage of cells with altered physical-chemical properties of surface components (glycoproteins, acetylcholinesterase). These results suggest that structural-functional modification of surface components in erythrocyte membranes reflects pathological shifts occuring in complicated cases.
Shcherba V.V., Senchuck V.V., Kurchenko V.P., Babitskaya V.G., Kukulyanskaya T.A.
Melanin pigments in some basidiomycetes. pp. 49--53
Summary: Ability of basidiomycetes Phellinus igniarius and Inonotus sp. to synthesize considerable amounts of melanin pigments has been established. The stimulants of melaninogenesis (tyrosine, pyrocathechole, etc.) have been revealed. Physical and chemical characteristics of the pigments showed that black-brown pigments synthesized by the macromycetes are true melanins.
Astapovich N.I., Golovneva N.A., Grunko M.E., Kondratyeva L.V.
Polygalacturonase production by Aspergillus carbonarius cells with walls impaired by lytic enzymes. pp. 54--56
Summary: Protein secretion and production of extracellular enzyme -- polygalacturonase -- after structural modification of A. carbonarius cell wall was examined. Partial degradation of A. carbonarius cell wall polymers by lytic enzymes was shown to result in 5-fold protein secretion, yet PG activity in incubation medium was not revealed. Electrophoretic separation of extracellular proteins secreted by A. carbonarius allowed to identify protein corresponding in electrophoretic mobility to A. carbonarius polygalacturonase but not displaying enzyme activity. Enzyme protein has been assumed to undergo structural modifications during secretion through A. carbonarius cell wall.
Zalashko M.V., Korolyova I.F., Salokhina G.A.
Effect of incubation temperature and aeration of the media on lipid peroxidation processes in yeast. pp. 57--59
Summary: Effects of fermentation temperature and aeration of the media on lipid peroxidation processes (LP) were studied using intact cells of pigmented (Rhodotorula glutinis) and non-pigmented (Lipomyces starkeyi) yeasts. Oxidation was found to proceed more rapidly in non-pigmented cells. Carotinoid pigments were identified as major factors inhibiting initial peroxide formation.
Bagel I.M.
Thyroidal and calcium-regulating function of thyroid and parathyroid glands after gamma-irradiation. pp. 60--63
Summary: Irradiation by 1Gy dose decreased level of thyroid hormones, increased calcitonin content and altered calcium metabolism. Effect of radiation on thyroid and calcium-regulating metabolisms is realized, probably, by means of central control mechanisms in hypothalamus--hypophysis--thyroid gland system.
Ablekovskaya O.N., Amvrosyev A.P.
Response of blood capillaries in albino rat ovaries to gamma-irradiation in fetal period of ontogenesis. pp. 64--67
Summary: Ovary hemocapillaries in 20-day fetuses of white rats were examined after single external 1Gy dose irradiation by 10 and 14 days of embryogenesis. Changes of important synthetic, transport and energy processes in capillary cells were established in fetal period of ontogenesis.
Svirid V.D., Sviridov O.V., Kolomiets E.I., Zdor N.A.
Investigation of biosynthesis conditions and streptavidin recovery from cultural liquor of Streptomyces avidinii. pp. 68--72
Summary: Factors affecting streptavidin production by actinomycete Streptomyces avidinii were investigated. Nutrient media providing streptavidin yields in the range 80--100 mg/l were selected. Mass transfer was shown to be the main factor regulating streptavidin biosynthesis. Pure streptavidin was recovered from cultural liquor.
Andrianov A.M.
A new approach to modelling spatial structure of conformationally flexible peptides based on nuclear Overhauser effect spectroscopy data. pp.73--77
Summary: A new method has been proposed to compute spatial structure of the conformationally flexible peptides based on the nuclear Overhauser effect (NOE) spectroscopy data. This approach includes two main stages: i) the initial approximations for peptide (conformations of indidividual amino acid residues which agree with the experimental NOE data) are calculated by specially developed methodology, ii) the computation of the spatial molecular structure is carried out using theoretical conformational analysis. The method has been tested by modelling spatial structure of peptide rp342 presumably containing immunodominant epitope of the HIV-1 protein gp120.
Mironova G.P.
The role of ventral compartments of oblongated marrow in vestibular signal transfer to small intestine in rats. pp. 78--80
Summary: Using combined stimulation of the lateral reticular nucleus (LRN) and lateral vestibular nucleus (LVN), as well as caudal raphe nuclei (CRN) and LVN, the role of the LRN and CRN in the modulation of vestibular effects on electric activity of the small intestine was demonstrated.
Davidovsky A.G.
Initial chandes induced by interleukin-1b in lipid peroxidation processes and antioxidant protective components in liver and spleen of albino rats. pp. 81--83.
Summary: Influence of interleukin-1b (IL-1b) on lipid peroxidation processes in spleen and antioxidant protective components in liver is mediated by prostaglandines.
Sokolnik V.P., Feshchenko S.P.
Spectrum of collagen proteins in limbs at early stages of human embryogenesis. pp. 84--86
Summary: Studies of collagen protein spectrum in the course of human chondrogenesis were carried out. The results indicate quantitative and qualitative distinctions in collagen composition at different stages of human limb development. The data can be used to study pathogenesis of skeletal dysplasias.
Rolevich I.I., Muraviov G.N.
Post-radiational changes in adenocarcinomas of various differentiation. pp. 87--88
Summary: A randomized study was performed to evaluate 5 year results of combined treatment of patients with ray-resistant colocteral cancer in correlation with post-radiational changes in dissected tumors. Experiments were carried out in groups exposed to different preoperative ray doses with or without antioxidant supply.
Shevteova T.M.
Lake ichthyocenoses of Belarus Poozerye. pp. 89--92
Summary: 34 fish species inhabiting 37 lakes of Belarus Poozerye have been detected. Distribution of lake species and biotic succession of fish population were established.
Alexandrovich O.R., Tikhonchuck G.N.
Zoogeographical analysis of ground beetles Coleoptera, Carabidae in upper and middle Dnieper areas. pp. 93--96
Summary: 169 species of the ground beetles belonging to 4 types of holarctic distribution and to 20 zoogeographical elements were discovered in the course of investigations on the banks of the Dnieper river. The fauna of the Dnieper region is made up by species of the European mediterranean centre of origin, circumboreal and transpalaearctic species.
Bychkova E.I., Chemarmozovich I.E., Pareyko O.A.
Helminthic infestation of Anas platyrhynchos L. in urban and natural Belarus landscapes. pp. 97--101
Summary: The paper presents data on helminthic invasion of Anas platyrhynhos L. in natural and urban environment. The bird was found to host 28 parasitic species. Authentic decline (P = 0.03) of invasion rate was recorded for urban population. Disappearance of helminthic species colonizing 2 intermediate hosts was established. Authentic distinctions (P < 0.01) in infestation rate were revealed for young and mature birds from urban habitats and probable causes have been discussed.
Plynta M.V.
Growth of brook trout Salma trutta morpha fario L. in Belarus rivers. pp. 102--105
Summary: The parameters of linear and weight growth of brook trout in Belarus rivers are presented. Growth distinctions of brook trout from different habitats were registered and possible reasons have been disclosed.
Gatalsky V.V.
Gracilization as a factor promoting reduction processes in jaw-facial system of contemporary humans. pp. 106--108
Summary: The phenomenon of gracilization is considered as one of the factors promoting reduction processes in the jaw-facial system of modem population. Decreasing muscular dominance and an increasing role of gravitation factor in shifting orientation of facial bones can take place. Horizontal face profile has turned into vertical as aresult.
Dobrolyubov A.I., Shnmack S.K.
Locomotion mechanism of gastropod mollusca. pp. 109--112
Summary: The locomotion mechanism of some creatures with elongated deformable body (snail, slow-moving gastropod mollusk) is analyzed from theoretical mechanics and biomechanics viewpoint. It is shown that the driving mechanism of this locomotion are transverse sine waves running along the ventral support surface of the body.
Summary: The review of current literature devoted to genetically programmed cell death (apoptosis) has been compiled. The authors paid special attention to the apoptosis role in maintenance of the normal functioning of immune system and in malignization.