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O. S. Mashkina T. M. Tabatskaya A. I. Gorobets K. A. Shestibratov 《Applied Biochemistry and Microbiology》2010,46(8):769-775
Conditions of cultivation and micropropagation of selected biotypes of five willow species (Salyx dasyclados Wimm., S. caspica Pall., S. triandra L., S. purpurea L., and S. viminalis L.) and two hybrids (×S. acuminata S. and ×S. palustris Host.) were optimized. Data on in vitro propagation of S. caspica, S. triandra, S. purpurea together with hybrids S. acuminata and S. palustris were obtained for the first time. It has been demonstrated that the outcome of cultivation and propagation of willows strongly
depends on genotypic peculiarities of initial plants. The optimal terms of isolation and sterilization of single-node segments
for obtaining 50–75% of aseptic viable developing cultures were estimated. The nutritive media were selected providing induction
of stem development (to 67%), their rooting (to 91%), elongation (to 3–6 cm), and multiplication (propagation coefficient
of 4). The designed method (adopted to different genotypes) can be applied for obtaining aseptic in vitro cultures serving
as initial plant material for genetic transformation and mass propagation of plants with new agriculturally valuable characteristics
which are of interest for construction of bioenergetic plantations and for needs of the paper industry. 相似文献
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E. V. Mashkina K. A. Kovalenko T. A. Marakhovskaya K. N. Saraev A. A. Belanova T. P. Shkurat 《Russian Journal of Genetics》2016,52(8):853-859
In the present study, the frequencies of genotypes and alleles of candidate genes with respect to polymorphisms associated with increased pregnancy loss in the first trimester of pregnancy, including MMP1–1607insG, MMP9 A–8202G, and TIMP1 С536T, were reported. The frequency of homozygotes for allele MMP9 A–8202 was increased by a factor of two among women with miscarriage in the first trimester compared to the control. Significant models of interaction of genes MMPs and TIMP1 were revealed. The genotypes of genes MMP1 (rs1799750), MMP9 (rs11697325), and TIMP1 (rs11551797) increasing the risk of pregnancy loss in the first trimester were determined. 相似文献
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V. A. Chistyakov M. A. Sazykina A. A. Alexandrova N. I. Belichenko E. V. Mashkina L. V. Gutnikova P. V. Zolotukhin T. P. Shkurat 《Biochemistry. Biokhimii?a》2010,75(3):269-273
The ability of cationic plastoquinone derivative 10-(6′-plastoquinonyl) decyltriphenylphosphonium (SkQ1) to modify processes
of spontaneous and induced mutagenesis was studied. It is shown that daily introduction of this compound into male Wistar
rats in doses of 25 and 250 nmol/kg during two weeks decreases spontaneous level of chromosome aberrations in anaphase in
the eye cornea from 0.39 ± 0.09 to 0.13 ± 0.08 and 0.14 ± 0.05, respectively. The level of 8-hydroxy-2′-deoxyguanosine in
blood serum of the investigated animals decreases from 32.12 ± 1.55 to 25.90 ± 2.26 and 25.76 ± 1.50 ng/ml, respectively.
These facts indicate that the decrease in spontaneous clastogenesis is caused by decreased level of DNA damage by endogenous
reactive oxygen species. A higher dose of SkQ1 also decreases to control level chromosome aberrations caused by oxygen under
pressure of 0.5 MPa for 60 min. It is also shown in experiments with bacterial biosensors that SkQ1 is able to efficiently
protect cells against genotoxic effect of UV radiation at 300–400 nm. 相似文献
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E. V. Mashkina A. V. Usatov V. A. Danilenko N. S. Kolokolova E. P. Gus’kov 《Russian Journal of Plant Physiology》2006,53(2):205-210
A tolerance of nuclear, plastome, and mitochondrial mutants of sunflower (Helianthus annuus L.) to extreme factors, increased temperature and oxidative stress, which was simulated by hyperbaric oxygenation was studied. In model experiments, activities of superoxide dismutase and catalase were assayed; cytogenetic analysis was used for the assessments of proliferative activity of cells in the root meristem; in field experiments, seedling emergence and growth at the stage of 3–4 leaf pair were evaluated. Most tolerant to increased temperature and oxygen pressure were a plastome en:chlorina-5 mutant and a partial revertant pr6-en:chlorina-7 with a changed structure of mitochondrial DNA. 相似文献
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Boldyrev AA Kazey VI Leinsoo TA Mashkina AP Tyulina OV Johnson P Tuneva JO Chittur S Carpenter DO 《Biochemical and biophysical research communications》2004,324(1):133-139
RT-PCR demonstrated that ionotropic (iGluR NR1) and metabotropic (mGluR Group III) glutamate receptors are expressed in rodent lymphocytes. Flow cytometry showed that activation of iGluR NR1 by N-methyl-D-aspartate (NMDA) increased intracellular free calcium and reactive oxygen species (ROS) levels and activated caspase-3. The latter effect was attenuated by the NMDA antagonist, 5-methyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5,10-imine (MK-801), by the antioxidant N-acetylcysteine and by cyclosporin A. Treatment with L-2-amino-4-phosphonobutyric acid (L-AP4), an mGluR Group III agonist, increased lymphocyte ROS levels but to a lower extent than did NMDA. Activation of lymphocytes with both NMDA and L-AP4 caused a synergistic increase in ROS levels and induced necrotic cellular death without elevating the caspase-3 activation observed in the presence of NMDA alone. These results show that lymphocyte iGluR NR1 and mGluR Group III receptors may be involved in controlling rodent lymphocyte functions and longevity as they regulate events in cell proliferation, maturation, and death. 相似文献
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A comparative study of chlorophyll mutations induced in sunflower seedlings of the initial line 3629 and its nuclear and plastom mutant derivatives by nitrosomethylurea (NMU) (0.015%), heat shock (HS, 40 degrees C), and their combination was performed. The spectrum and frequency of chlorophyll mutations depended on the treatment conditions and on the genotype of the lines tested. Nuclear mutant displayed highest sensitivity to NMU, HS, and their combination. The line 3629 plants displayed highest tolerance to NMU and HS. However, plastom mutants were more tolerant to the combination of the mutagens compared to the plants of the initial line. 相似文献
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Ziakun AM Zakharchenko VN Kudriavtseva AI Peshenko VP Mashkina LP Vozniak VM Shurukhin IuV 《Prikladnaia biokhimiia i mikrobiologiia》2000,36(1):17-20
During alcohol fermentation, the carbon isotope composition of ethyl alcohol produced depended on the substrate used and was characterized by the value of delta 13C equal to -24.7 +/- 0.8/1000 (wheat grain), -22 +/- 0.1/1000 (rye grain), -22 +/- 0.5/1000 (products of wood hydrolysis), -15.3 +/- 0.3/1000 (maize grain) and -10 +/- 0.1/1000 (sugar cane). The isotope composition of carbon of ethyl alcohol obtained during catalytic hydroxylation of ethylene has a delta 13C of -30.6 +/- 0.3/1000. The possibility of quantitative determination of specific components in mixtures of ethanol samples with various isotope compositions (chemical synthesis and alcohol fermentation of raw material from C3- or C4-plants) was shown. 相似文献
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A. V. Usatov E. V. Mashkina N. V. Markin E. P. Guskov 《Russian Journal of Genetics》2001,37(12):1388-1393
A comparative study of chlorophyll mutations induced in sunflower seedlings of the initial line 3629 and its nuclear and plastom mutant derivatives by nitrosomethylurea (NMU), heat shock (HS, 40°C), and their combination was performed. The spectrum and frequency of chlorophyll mutations depended on the treatment conditions and on the genotype of the lines tested. Nuclear mutant displayed highest sensitivity to NMU, HS, and their combination. The line 3629 plants displayed highest tolerance to NMU and HS. However, plastom mutants were more tolerant to the combination of the mutagens compared to the plants of the initial line. 相似文献