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排序方式: 共有173条查询结果,搜索用时 15 毫秒
1.
I. Yu. Malyshev E. B. Manukhina V. D. Mikoyan L. N. Kubrina A. F. Vanin 《FEBS letters》1995,370(3):159
Heat shock potentiated the nitric oxide production (EPR assay) in the liver, kidney, heart, spleen, intestine, and brain. The heat shock-induced sharp transient increase in the rate of nitric oxide production preceded the accumulation of heat shock proteins (HSP70) (Western blot analysis) as measured in the heart and liver. In all organs the nitric oxide formation was completely blocked by the NO-synthase inhibitor
(L-NNA). L-NNA also markedly attenuated the heat shock-induced accumulation of HSP70. The results suggests that nitric oxide is involved in the heat shock-induced activation of HSP70 synthesis. 相似文献
2.
Shelyakin M. A. Zakhozhiy I. G. Dalke I. V. Dymova O. V. Malyshev R. V. Golovko T. K. 《Russian Journal of Plant Physiology》2021,68(6):1048-1058
Russian Journal of Plant Physiology - Lichens are unique phototrophic organisms whose physiology of stress tolerance attracts much attention. Parameters of photosynthetic and respiratory activities... 相似文献
3.
S. P. Maslova G. N. Tabalenkova R. V. Malyshev T. K. Golovko 《Russian Journal of Plant Physiology》2013,60(6):821-829
Growth and metabolic activity of underground shoots of a long-rhizome perennial herbaceous species yarrow (Achillea millefolium L.) were studied. The active growth of rhizomes and the formation of new meristematic zones were observed during the second half of the growing season after termination of aboveground shoot growth. In this period, underground shoots had a rather high rate of respiration (1.3 mg CO2/(g dry wt h)), a considerable content of nonstructural carbohydrates (15% of dry weight), and the elevated activities of IAA, cytokinins, and ABA. In autumn, the rate of respiration of underground shoots decreased to 1.0 mg CO2/(g dry wt h), soluble sugars accumulated, the ratio between unsaturated and saturated fatty acids rose as well as the ratios GA/ABA and cytokinins/ABA. Temperature optimum for the rhizome growth lay in the range of low and moderate above-zero temperatures (5–20°C), and the freezing point of water in the apices of under-ground shoots was about ?10°C. It is concluded that rhizome quiescence predominantly depends on low temperatures and is not associated with the accumulation of growth inhibitors. In the course of plant preparation to winter, morphogenetic transformations in underground shoots depend on changes in the hormonal balance directed in favor of growth hormones and relatively high respiratory activity in the apical zones of the rhizomes. 相似文献
4.
R. V. Malyshev M. A. Shelyakin T. K. Golovko 《Russian Journal of Plant Physiology》2016,63(3):409-416
Respiration and heat production in the shoots of bilberry (Vaccinium myrtillus L.) were studied at the beginning of growth after breaking bud dormancy by means of transfer of the shoots to indoor conditions (November–April) and upon natural sprouting in spring (May). The buds released from dormancy at the beginning of winter sprouted slower and showed lower respiratory activity than the buds that started growing in May. In May, cytochrome respiratory pathway in sprouting buds was 1.3 times more active than energetically ineffective alternative pathway, whereas activity of cytochrome pathway in December was 1.4 times lower as compared with the alternative. In November–December, the rate of heat evolution by the buds was 3–5 times lower than in April–May. In case of early breaking of bud dormancy, the share of respiration energy dissipated as heat was 30% on average. In the buds whose growth was induced later, the value of this parameter was twice as much. The ratio between heat evolution and respiration depended on temperature. High temperature more intensely activated heat evolution than respiration, which caused a decrease in the level of metabolic energy available for growth. In the temperature range of 5–15°C characteristic of the beginning of vegetation, the share of respiration energy dissipated as heat was 2–3 times lower than at 20–30°C, which reflects a great adaptability of V. myrtillus to climatic conditions of the region. Our data suggest that progression through a full cycle of winter dormancy is physiologically important for shoot growth. Early dormancy release brought about changes in respiration and energy balance of the shoots in the initial stage of extra-bud growth. 相似文献
5.
Juergen Kreyling Sbastien J. Puechmaille Andrey V. Malyshev Fernando Valladares 《Ecology and evolution》2019,9(3):1344-1352
Phenotypic plasticity is important for species responses to global change and species coexistence. Phenotypic plasticity differs among species and traits and changes across environments. Here, we investigated phenotypic plasticity of the widespread grass Arrhenatherum elatius in response to winter warming and frost stress by comparing phenotypic plasticity of 11 geographically and environmentally distinct populations of this species to phenotypic plasticity of populations of different species originating from a single environment. The variation in phenotypic plasticity was similar for populations of a single species from different locations compared to populations of functionally and taxonomically diverse species from one environment for the studied traits (leaf biomass production and root integrity after frost) across three indices of phenotypic plasticity (RDPI, PIN, slope of reaction norm). Phenotypic plasticity was not associated with neutral genetic diversity but closely linked to the climate of the populations’ origin. Populations originating from warmer and more variable climates showed higher phenotypic plasticity. This indicates that phenotypic plasticity can itself be considered as a trait subject to local adaptation to climate. Finally, our data emphasize that high phenotypic plasticity is not per se positive for adaptation to climate change, as differences in stress responses are resulting in high phenotypic plasticity as expressed by common plasticity indices, which is likely to be related to increased mortality under stress in more plastic populations. 相似文献
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8.
Norekian TP Nikitin ES Bravarenko NI Malyshev AIu Balaban PM 《Zhurnal vysshe? nervno? deiatelnosti imeni I P Pavlova》2001,51(6):717-722
Rhythmic activities of two feeding structures of the pteropod mollusk Clione limacina, redula and hooks, controlled by the neural networks in the buccal ganglia must be coordinated in order to produce a meaningful feeding response. Optical recording from the buccal ganglia, which allows the simultaneous activities of numerous neurons to be traced, revealed that such coordination exists in a phase-dependent manner. Instead of recording four theoretically possible phases of neuronal rhythmic activity, we always recorded only two phases, even after the electrical stimulation of the cerebro-buccal connective, which triggers both radula and hook rhythmic movements in the preparation. 相似文献
9.
M G Pshennikova L M Belkina L Iu Bakhtina L A Ba?da E V Popkova I Iu Malyshev 《Rossi?skii fiziologicheski? zhurnal imeni I.M. Sechenova / Rossi?skaia akademiia nauk》2001,87(9):1171-1177
A lesser resistance against myocardial infarction (MI) in the Wistar rats as compared with the August rats was found to be combined with a greater stress-response and activation of the heart sympathetic regulation in the former rats. In the Wistar rats and not in August rats, an activation of hypothalamic noradrenaline (NA) system occurs as well as a greater "output" of the NA from sympathetic terminals in the myocardium. Accumulation of the HSP 70 stress-proteins in IM in the myocardium is nearly 2-2.5-fold lesser in the Wistar rats. Thereupon, different resistance against the IM in Wistar and August rats seems to be due to a genetically determine differences in intensity of the stress-response, activation of the heart sympathetic regulation in the IM, and production of the HSP 70 protective stress-proteins in the myocardium. 相似文献
10.
Malyshev IYu Bayda LA Trifonov AI Larionov NP Kubrina LD Mikoyan VD Vanin AF Manukhina EB 《Physiological research / Academia Scientiarum Bohemoslovaca》2000,49(1):99-105
In this work, we evaluated the effect of adaptation to heat on the fall of blood pressure (BP) induced by heat shock (HS) and the interrelation between nitric oxide (NO) and heat shock protein, HSP70. Experiments were carried out on Wistar rats. It was shown that HS resulted in a generalized and transient increase in NO production (the electron paramagnetic resonance method) and a fall of BP from 113+/-3 to 88+/-1 mm Hg (p<0.05). Adaptation to heat itself did not affect BP, but completely prevented the NO overproduction and hypotension induced by HS. The adaptation simultaneously increased the brain NO-synthase content and induced HSP70 synthesis (the Western blot analysis) in various organs. Both the antihypotensive effects of adaptation and HSP70 accumulation were completely prevented by L-NNA, an inhibitor of NO synthesis, or quercetin, an inhibitor of HSP70 synthesis. The data suggest that adaptation to heat stimulates NO synthesis and NO activates synthesis of HSP70. HSP70, which hampers NO overproduction, thus restricts the BP fall induced by heat shock. 相似文献