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The infection of Planorbarius banaticus with sporocysts of Cotylurus cornutus is accompanied by an increase in aldolase activity of molluscs' haemolymph of 1.2 fold. In solutions of nitroammofoska (0.1, 1 and 10 mg/1) the activity of this ferment in infected individuals increases much higher than in non-infected ones. This results in fast carbohydrate expenditures by molluscs, intermediate hosts of trematodes, and their death from exhaustion. 相似文献
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Adameyko K. I. Kravchuk O. I. Finoshin A. D. Bonchuk A. N. Georgiev A. A. Mikhailov V. S. Gornostaev N. G. Mikhailov K. V. Bacheva A. V. Indeykina M. I. Bugrova A. E. Gazizova G. R. Kozlova O. S. Gusev O. A. Shagimardanova E. I. Lyupina Y. V. 《Molecular Biology》2020,54(3):416-420
Molecular Biology - The iron-containing protein neuroglobin (Ngb) involved in the transport of oxygen is generally considered the precursor of all animal globins. In this report, we studied the... 相似文献
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Comparison between patients with occupational fluorosis, a group of healthy workers, and a sample from the general population revealed differences in concentrations of some polymorphic serum proteins. These differences depended on phenotypes of patients. TF 1-2, PI 1-2, and HP 2-1 patients exhibited a decreased concentration of transferrin (TF), a decreased concentration of proteinase inhibitor (PI), and an increased concentration of haptoglobin (HP), respectively. 相似文献
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The "invisible" proteome of a Cola drink, stated to be produced with a kola nut extract, has been investigated via capture with combinatorial peptide ligand libraries (CPLL). Indeed, a few proteins in the M(r) 15-20 kDa range could be identified by treating large beverage volumes (1 L) and performing the capture with CPLLs at very acidic pH values (pH 2.2) under conditions mimicking reverse-phase adsorption. Ascertaining the presence of proteins deriving from plant extracts has confirmed the genuineness of such beverage and suggests the possibility of certifying whether soft drinks present on the market are indeed made with vegetable extracts or only with artificial chemical flavoring. 相似文献
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Time-course of induced accumulation of callose in tomato cells has been studied. Localization of callose in L. esculenthum cells was investigated by fluorescent microscopy technique, and the optimal time for its determination was found. Callose accumulation in tomato cells treated with different biotic elicitors was determined. Nonlinear dependence between callose accumulation and concentration of chitin oligomers (with 3-5 N-acetylglucosamine fragments) was established. Increasing of callose accumulation in tomato cells was proportional to the increase of concentration ofchitin dimer and chitosan in the culture medium. 相似文献
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Abstract: Many articulated brachiopods experience marked life habit variations during ontogeny because they experience their fluid environment at successively higher Reynolds numbers, and they can change the configuration of their inhalant and exhalant flows as body size increases. We show that the extant brachiopod Terebratalia transversa undergoes a substantial ontogenetic change in reorientation governed by rotation around the pedicle. T. transversa′s reorientation angle (maximum ability to rotate on the pedicle) decreases during ontogeny, from 180 degrees in juveniles to 10–20 degrees in individuals exceeding 5 mm, to complete cessation of rotation in individuals larger than 10 mm. Rotation ability is substantially reduced after T. transversa achieves the adult lophophore configuration and preferred orientation with respect to ambient water currents at a length of 2.5–5 mm. We hypothesize that the rotation angle of T. transversa is determined mainly by the position of ventral and dorsal points of attachment of dorsal pedicle muscles relative to the pedicle. T. transversa shows a close correlation between the ontogenetic change in reorientation angle and ontogeny of morphological traits that are related to points of attachment of dorsal pedicle muscles, although other morphological features can also limit rotation in the adult stage. The major morphological change in cardinalia shape and the observed reduction of rotation affect individuals 2.5–10 mm in length. The position of ventral insertions of dorsal pedicle muscles remains constant, but contraction of dorsal pedicle muscles is functionally handicapped because dorsal insertions shift away from the valve midline, rise above the dorsal valve floor, and become limited by a wide cardinal process early in ontogeny (<5 mm). The rate of increase of cardinal process width and of distance between dorsal pedicle muscle scars substantially decreases in the subadult stage (5–10 mm), and most of the cardinalia shell traits grow nearly isometrically in the adult stage (>10 mm). T. transversa attains smaller shell length in crevices than on exposed substrates. The proportion of small‐sized individuals and population density is lower on exposed substrates than in crevices, indicating higher juvenile mortality on substrates prone to grazing and physical disturbance. The loss of reorientation ability can be a consequence of morphological changes that strengthen substrate attachment and maximize protection against biotic or physical disturbance (1) by minimizing torques around the pedicle axis and/or (2) by shifting energy investments into attachment strength at the expense of the cost involved in reorientation. 相似文献
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V. I. Emel’yanov Zh. N. Kravchuk S. A. Polyakovskii A. P. Dmitriev 《Cytology and Genetics》2008,42(2):90-95
The dynamics of induced accumulation of callose in tomato cells is studied. Localization of callose in the cells is studied by methods of fluorescence microscopy and the time needed for quantitative determination of callosa is optimized. The quantity of callose in tomato cells treated with different biotic elicitors is established. A nonlinear dependence of the deposition of callose on the concentration of chitin oligomers containing 3–5 fragments of N-acetylglucosamine is established and a proportional increase in the content of callose in the cells with increasing concentration of chitin dimer and chitosan in the culture medium is demonstrated. 相似文献
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Khusnutdinova EK Viktorova TV Akhmetova VL Mustafina OE Fatkhlislamova RI Balanovskaia EV Petrova NV Makarov SV Kravchuk OI Paĭ GV Ginter EK 《Genetika》2003,39(11):1550-1563
Population-genetic study of indigenous populations representing three ethnic Chuvash group: highland (Cheboksarsk and Morgaush district), lowland (Kanash district) and mid-lowland (Marposad district). Eight polymorphic DNA loci of the nuclear genome (VNTR/PAH, STR/PAH, VNTR/ApoB, VNTR/DAT1, APF, VNTR/eNOS, IVS6aGATT, and KM.19/PstI) were examined in the population of each district. For each of the four population, we estimated the allele and genotype frequency distributions at each polymorphic system, heterozygosities HS and between-population differences FST. In the combined Chuvash sample, HS = 0.464 and FST = 0.006. Loci VNTR(DAT) and VNTR(ApoB) showed highest between-population differentiation (0.009 < or = FST < or = 0.012), and loci IVS6aGATT, APF, VNTR/eNOS, and D7S23 (KM.19), lowest differentiation (0.001 < or = FST < or = 0.003). Analysis of genetic distances revealed somewhat higher genetic similarity between the Cheboksarsk and Morgaush populations belonging to the highland Chuvash group, whereas the highland Chuvash population from the Marposad district, which belong to the mid-lowland group, was more distant from the former populations. 相似文献