Nina Terletskaya - Academia.edu (original) (raw)
Papers by Nina Terletskaya
Genes, Mar 25, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Molecules
The composition of an ethanol extract from the roots of Rumex tianschanicus Losinsk of the Trans-... more The composition of an ethanol extract from the roots of Rumex tianschanicus Losinsk of the Trans-Ili Alatau wild flora was studied in order to determine its antiulcer activity. The phytochemical composition of the anthraquinone–flavonoid complex from (AFC) R. tianschanicus revealed the presence of numerous polyphenolic compounds, the most abundant of which are anthraquinones (1.77%), flavonoids (6.95%), and tannins (13.39%). The use of column chromatography (CC) and thin-layer chromatography (TLC) in conjunction with UV, IR, NMR spectroscopy, and mass spectrometry data allowed the researchers to isolate and identify the major components of the anthraquinone–flavonoid complex’s polyphenol fraction: physcion, chrysophanol, emodin, isorhamnetin, quercetin, and myricetin. The gastroprotective effect of the polyphenolic fraction of the anthraquinone–flavonoid complex (AFC) of R. tianschanicus roots was examined in an experimental model of rat gastric ulcer induced by indomethacin. The pr...
Ķaraġandy universitetìnìṇ habaršysy. Biologiâ, medicina, geografiâ seriâsy, Dec 30, 2022
General and specific toxicity determination of an extract from the plant Rhodiola semenovii Boris... more General and specific toxicity determination of an extract from the plant Rhodiola semenovii Boriss The study of chronic and acute toxicity pharmacological phenomena with occupational symptoms of intoxication provides essential information on therapeutic activity of the drug. An extract of the Rhodiola semenovii Boriss plant was taken to determine toxicity. Phytochemical studies were carried out on the composition of biologically active compounds for medicinal purposes. Based on the statistical data on the chemical composition, substances, such as flavonoids, coumarins, phenolic acids, and polysaccharides, were identified in the root extract of the Rh. semenovii plant. To study the chronic and acute toxicity of the extract, preclinical tests were on outbred laboratory rats. After completion of the experiment of acute and chronic toxicity, animals were slaughtered and peripheral blood samples were obtained for hematological and biochemical blood analysis. In addition, macroscopic studies of laboratory animals were performed. There were morphologicalstructural changes heart, kidneys, liver, heart, and pancreas. An external examination at the autopsy revealed no changes in the vital organs, as well as the digestive, respiratory, excretory systems. According to the studies carried out, Rh. semenovii does not have general toxic extracts.
Agriculture
Chenopodium quinoa Willd. is an annual facultative halophytic pseudocereal widely studied for its... more Chenopodium quinoa Willd. is an annual facultative halophytic pseudocereal widely studied for its physiology and grain yield owing to its great tolerance to unfavorable growing conditions. However, the morphophysiological and anatomical characteristics of plants’ photosynthetic organs under various and combined abiotic stresses during the early stages of development have not been thoroughly studied. Therefore, the current study compared the influence of osmotic, salt, and combined stress at different intensities on the morphology and anatomy of photosynthetic organs in young quinoa plants. The main findings demonstrate that salt stress at an intensity between 100 and 200 mM NaCl is not critical for the growth of young quinoa plants and that the young plants can withstand salt stress at an intensity of 300 mM NaCl. However, it can be concluded that some adaptation mechanisms of the plants were already violated at a salt stress intensity of 200 mM NaCl, while significant changes in th...
Eurasian Journal of Ecology, 2021
Anatomical parameters of the flag leaf as criteria for drought tolerance of two alloplasmic lines... more Anatomical parameters of the flag leaf as criteria for drought tolerance of two alloplasmic lines (interspecific hybrids) and their parental forms − T. aestivum L. (cultivar of Mironovskaya-808) and T. dicoccum wheat were presented. The parameters studied were the thickness of the abaxial and adaxial epidermis, the thickness of the mesophyll and central vein, and the diameter of the central conducting bundle of the flag leaf. Different degrees of negative impact of sudden drought-stress and permanent water deficit on the anatomical structure of the flag leaf were shown. At the stage of flag leaf formation, anatomical parameters, for example an increase or preservation of the size of the protective and mechanical leaf tissues and the thickness of the mesophyll under stress can serve as criteria for the selection of drought-resistant forms of wheat. It revealed that among the studied genetic lineages the alloline D-d-05 showed the best adaptability and the most stable anatomical parameters of the flag leaf under conditions of moisture deficiency. The different degrees of drought tolerance of the studied lines indicate that the combination of the nucleus and cytoplasm of the parental forms can contribute to both an increase and a decrease in the level of drought tolerance in interspecific hybrids, which indicates the need to continue research with additional molecular genetic analysis.
Eurasian Journal of Applied Biotechnology, 2021
Genus Sedum (family Crassulaceae) - succulents adapted to lack of moisture. Morphophysiological r... more Genus Sedum (family Crassulaceae) - succulents adapted to lack of moisture. Morphophysiological reactions of immature Sedum hybridum L. (Aizopsis hybrida (L.) Grulich) plants to stressful conditions of water scarcity, salinization and low positive temperatures are described. The high resistance of plants to the studied stress effects is shown. The tendency of the dynamics of the highest moisture loss by plants of the control group and the lowest by plants cultivated at PEG–6000 at a concentration of 200 mmol/l was noted, which indicates the adaptive effect of this level of osmotic stress on Sedum hybridum plants. To obtain a completely dry Sedum hybridum mass for various physiological experiments, it is necessary to maintain the plant material at a temperature of 105⸰ C, with at least 40 hours.
BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series, 2019
Vestnik of Samara University. Natural Science Series, 2017
The resistance to osmotic and salt stress 9 alloplasmatic wheat lines derived from crosses of var... more The resistance to osmotic and salt stress 9 alloplasmatic wheat lines derived from crosses of varieties Mironovskaya 808 with T. dicoccum Shuebl. was analyzed. The ability of seedlings to transfer a substantial water deficit, the abil ity to accumulate biomass, changes in growth parameters and water content in leaves and roots under stress were identified. High stability of the studied lines was demonstrated.
IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future", 2019
Пленарные доклады 1Казанский институт биохимии и биофизики-обособленное структурное подразделение... more Пленарные доклады 1Казанский институт биохимии и биофизики-обособленное структурное подразделение ФИЦ КазНЦ РАН, Казань, Россия 2Казанский (Приволжский) федеральный университет, Казань, Россия, 3Федеральное государственное бюджетное учреждение науки Институт биохимии и физиологии растений и микроорганизмов РАН, Саратов, Россия, 4Институт органической и физической химии им. А.Е. Арбузова-обособленное структурное подразделение ФИЦ КазНЦ РАН, Казань, Россия
Molecules
In terms of prevalence, thyroid pathology, associated both with a violation of the gland function... more In terms of prevalence, thyroid pathology, associated both with a violation of the gland function and changes in its structure, occupies one of the main places in clinical endocrinology. The problem of developing low-toxic and highly effective herbal preparations for the correction of thyroid hypofunction and its complications is urgent. Salidroside is a glucoside of tyrosol, found mostly in the roots of Rhodiola spp., and has various positive biological activities. The purpose of this study was to study the antihypothyroid potential of salidrosid-containing extract from R. semenovii roots, which was evaluated on a mercazolyl hypothyroidism model. We showed that extract containing salidroside is a safe and effective means of hypothyroidism correction, significantly reducing (p ≤ 0.001) the level of thyroid-stimulating hormone and increasing the level of thyroid hormones. The combined use of R. semenovii extract with potassium iodide enhances the therapeutic effect of the extract by ...
Experimental Biology, 2018
Deficit of water is a key stressor in global climate change conditions. The studying the influenc... more Deficit of water is a key stressor in global climate change conditions. The studying the influence of nucleus-cytoplasm relations can be helped to the better understanding of the process of plant adaptation to drought conditions. The aim of the study was the analyze of changes in growth parameters and pigment complex of seedlings of hybrids and alloplasmatic lines of wheat, obtained as a result of interspecific crosses, when exposed to induced drought. Investigated the 10-day wheat seedlings, which was growed in optimal and stressful conditions simulated in water culture. The content of chlorophyll and carotenoids of leaf plates was determined spectrophotometrically in alcohol extracts. It is shown that the change in the growth activity of seedlings is determined not only by the activity of the root system under drought conditions, but may be associated with optimization in the photosynthetic apparatus. It is noted that a combination of nuclei and cytoplasm belonging to different species can both improve and worsen important physiological parameters of stress resistance and photosynthetic activity. The most tolerant to drought alloplasmic lines D-d-05 b, D-b-05, D-41-05 and the most sensitive forms – allolinia D-f-05 and hybrid A1 were identified. Key words: wheat, interspecific hybrids, alloplasmic lines, drought tolerance, photosynthesis
Metabolites
Rhodiola semenovii Boriss. (Regel and Herder) might be a promising replacement for the well-known... more Rhodiola semenovii Boriss. (Regel and Herder) might be a promising replacement for the well-known but endangered Rhodiola rosea L. In this research, the metabolic profile of R. semenovii, including drug-active and stress-resistant components, was studied in the context of source–sink interactions in situ in the dynamics of growth and development. Gas chromatography with mass spectrometric detection and liquid chromatography methods were used. The data obtained allow for assumptions to be made about which secondary metabolites determine the level of stress resistance in R. semenovii at different stages of ontogeny in situ. For the first time, an expansion in the content of salidroside in the above-ground organs, with its maximum value during the period of seed maturation, and a significant decrease in its content in the root were revealed in the dynamics of vegetation. These results allow us to recommend collecting the ground component of R. semenovii for pharmaceutical purposes thro...
The article presents the results of a study of drought tolerance of two species and two interspec... more The article presents the results of a study of drought tolerance of two species and two interspecific hybrids (alloplasmic lines) of wheat according to the anatomy and photosynthetic activity of leafblades under conditions of induced osmotic stress. The negative effect of drought on the leaf anatomicalstructure and on such photosynthetic parameters as the maximum quantum yield of photosynthesis ofphotosystem II (Fv/Fm) and a change in the electron transport through photosystem II (ETR) was shown.The quantum yield of controlled energy dissipation (Y (NPQ)) and the quantum efficiency of unregulatedenergy dissipation of PSII (Y (NO)) were experimentally determined. It was shown that the increase orpreservation of the size of the protective and mechanical tissues of the leaf unchanged under stress canserve as criteria for the selection of drought-resistant forms of wheat in the early stages of ontogenesis.It was clearly reflected that a decrease in the ETR level during stress can be ass...
Plants, 2022
In this article, for the first time, an experimental study of the effect of mild and moderate osm... more In this article, for the first time, an experimental study of the effect of mild and moderate osmotic stress, NaCl content and the effect of low positive temperature on photosynthetic activity and composition of metabolites of immature plants Sedum hybridum L. is reported. In this representative of the genus Sedum adapted to arid conditions and having the properties of a succulent, a change in photosynthetic activity and an increase in the level of protective metabolites in the shoots were revealed when exposed to mild and moderate stress factors. The results of this study can be used in work on the adaptation of succulent plants to arid conditions, environmental monitoring and work on the directed induction of valuable secondary metabolites in succulents to obtain new herbal medicines.
Bulletin of the Karaganda University. “Biology, medicine, geography Series”, 2021
Thyroid pathology has a leading position in clinical endocrinology. Diseases of the thyroid gland... more Thyroid pathology has a leading position in clinical endocrinology. Diseases of the thyroid gland in terms of prevalence are comparable with diabetes mellitus, and far ahead of other endocrine disorders. Current treatment approaches of hypothyroidism are rarely based on the pathogenesis, and are reduced to hormone replacement therapy. The purpose of this study is to determine the general hematological parameters after correction of experimental hypothyroidism with an extract of the root of the plant R. semenowii both alone and in combination with potassium iodide. As a result of the study, we found that in the experimental treatment of hypothyroidism, the extract of the root of R. semenowii B. with a predominant content of rhodioflavonoside has a pronounced therapeutic effect, expressed in the normalization of the level of pituitary and thyroid hormones. The obtained results indicate the absence of toxic and damaging effects such as activation and inhibition of hematopoiesis after e...
Abstract: Purpose of this work was to study changes in the ion balance under salt stress in roots... more Abstract: Purpose of this work was to study changes in the ion balance under salt stress in roots and leaves of seedlings of T. aestivum L. and its wild congeners with different genomic composition. Laboratory assessment of salt tolerance in seedlings was carried out and contents of ions K+, Na+ and Ca2+ in roots and leaves were defined. Considerable change of ionic balance in roots and leaves of studied forms of wheat against salt stress is shown. It is noticed that the parity K+/Na+ decreases in process of strengthening of salt stress. Authentic negative correlation between a relative gain of a biomass of leaves and roots in the stress conditions and accumulation of ions Na+ and between a relative gain of a biomass of leaves in the stress conditions and a parity in them of ions K+/Na+ is revealed. The research results also show that the stability characteristics of indicators of changes in ionic composition or balance in the leaves of young plants are more informative than in the roots and allow to reveal the form, characterized by relatively high of K+/Na+ ratio and the relatively low accumulation of Ca2+ as the most resistant to salt stress. Key words: Saline stress response, plantlets, ions, T. aestivum L., wild congeners.
Current Science, 2017
Studying of influence of drought to growth and anatomic parameters of the top tier leaves of diff... more Studying of influence of drought to growth and anatomic parameters of the top tier leaves of different wheat species was the purpose of this work. To detect differences between species differing in ploidy level there were identified anatomical features of the structure of inner and external surface of the leaves of each of the studied species, grown under normal conditions and under the induce drought stress. It was revealed that osmotic stress has an impact on the studied parameters of leaves of all the studied species and that change of anatomical structure of a blade of a flag leaf can influence the adaptation potential of the species. It is noted that hexaploid species have more quantity of adaptable mechanisms than di- and tetraploid species concerning protection against drought. It is shown that thickness of abaxial epidermis and the size of the central conducting bundle are correlatively connected with the size of a flag leaf in case of drought, they not depend on the ploidy ...
New information on not specificity of reaction of plant cells of different species of wheat on ac... more New information on not specificity of reaction of plant cells of different species of wheat on action of abiotic stresses of in vitro was received. It is shown that callus tissue in vitro can serve as a model system to study some stability parameters of cereals to abiotic stresses. The opinion on need more the fissile use of cytologic methods in physiology, plant breeding and biotechnology of plants for diagnostics and selection of stress-resistant forms of the major crops is expressed. Key-Words: Wheat species, abiotic stresses, nonspecific violations, callus, growth, cytological reactions
Experimental Biology, 2020
Genes, Mar 25, 2023
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Molecules
The composition of an ethanol extract from the roots of Rumex tianschanicus Losinsk of the Trans-... more The composition of an ethanol extract from the roots of Rumex tianschanicus Losinsk of the Trans-Ili Alatau wild flora was studied in order to determine its antiulcer activity. The phytochemical composition of the anthraquinone–flavonoid complex from (AFC) R. tianschanicus revealed the presence of numerous polyphenolic compounds, the most abundant of which are anthraquinones (1.77%), flavonoids (6.95%), and tannins (13.39%). The use of column chromatography (CC) and thin-layer chromatography (TLC) in conjunction with UV, IR, NMR spectroscopy, and mass spectrometry data allowed the researchers to isolate and identify the major components of the anthraquinone–flavonoid complex’s polyphenol fraction: physcion, chrysophanol, emodin, isorhamnetin, quercetin, and myricetin. The gastroprotective effect of the polyphenolic fraction of the anthraquinone–flavonoid complex (AFC) of R. tianschanicus roots was examined in an experimental model of rat gastric ulcer induced by indomethacin. The pr...
Ķaraġandy universitetìnìṇ habaršysy. Biologiâ, medicina, geografiâ seriâsy, Dec 30, 2022
General and specific toxicity determination of an extract from the plant Rhodiola semenovii Boris... more General and specific toxicity determination of an extract from the plant Rhodiola semenovii Boriss The study of chronic and acute toxicity pharmacological phenomena with occupational symptoms of intoxication provides essential information on therapeutic activity of the drug. An extract of the Rhodiola semenovii Boriss plant was taken to determine toxicity. Phytochemical studies were carried out on the composition of biologically active compounds for medicinal purposes. Based on the statistical data on the chemical composition, substances, such as flavonoids, coumarins, phenolic acids, and polysaccharides, were identified in the root extract of the Rh. semenovii plant. To study the chronic and acute toxicity of the extract, preclinical tests were on outbred laboratory rats. After completion of the experiment of acute and chronic toxicity, animals were slaughtered and peripheral blood samples were obtained for hematological and biochemical blood analysis. In addition, macroscopic studies of laboratory animals were performed. There were morphologicalstructural changes heart, kidneys, liver, heart, and pancreas. An external examination at the autopsy revealed no changes in the vital organs, as well as the digestive, respiratory, excretory systems. According to the studies carried out, Rh. semenovii does not have general toxic extracts.
Agriculture
Chenopodium quinoa Willd. is an annual facultative halophytic pseudocereal widely studied for its... more Chenopodium quinoa Willd. is an annual facultative halophytic pseudocereal widely studied for its physiology and grain yield owing to its great tolerance to unfavorable growing conditions. However, the morphophysiological and anatomical characteristics of plants’ photosynthetic organs under various and combined abiotic stresses during the early stages of development have not been thoroughly studied. Therefore, the current study compared the influence of osmotic, salt, and combined stress at different intensities on the morphology and anatomy of photosynthetic organs in young quinoa plants. The main findings demonstrate that salt stress at an intensity between 100 and 200 mM NaCl is not critical for the growth of young quinoa plants and that the young plants can withstand salt stress at an intensity of 300 mM NaCl. However, it can be concluded that some adaptation mechanisms of the plants were already violated at a salt stress intensity of 200 mM NaCl, while significant changes in th...
Eurasian Journal of Ecology, 2021
Anatomical parameters of the flag leaf as criteria for drought tolerance of two alloplasmic lines... more Anatomical parameters of the flag leaf as criteria for drought tolerance of two alloplasmic lines (interspecific hybrids) and their parental forms − T. aestivum L. (cultivar of Mironovskaya-808) and T. dicoccum wheat were presented. The parameters studied were the thickness of the abaxial and adaxial epidermis, the thickness of the mesophyll and central vein, and the diameter of the central conducting bundle of the flag leaf. Different degrees of negative impact of sudden drought-stress and permanent water deficit on the anatomical structure of the flag leaf were shown. At the stage of flag leaf formation, anatomical parameters, for example an increase or preservation of the size of the protective and mechanical leaf tissues and the thickness of the mesophyll under stress can serve as criteria for the selection of drought-resistant forms of wheat. It revealed that among the studied genetic lineages the alloline D-d-05 showed the best adaptability and the most stable anatomical parameters of the flag leaf under conditions of moisture deficiency. The different degrees of drought tolerance of the studied lines indicate that the combination of the nucleus and cytoplasm of the parental forms can contribute to both an increase and a decrease in the level of drought tolerance in interspecific hybrids, which indicates the need to continue research with additional molecular genetic analysis.
Eurasian Journal of Applied Biotechnology, 2021
Genus Sedum (family Crassulaceae) - succulents adapted to lack of moisture. Morphophysiological r... more Genus Sedum (family Crassulaceae) - succulents adapted to lack of moisture. Morphophysiological reactions of immature Sedum hybridum L. (Aizopsis hybrida (L.) Grulich) plants to stressful conditions of water scarcity, salinization and low positive temperatures are described. The high resistance of plants to the studied stress effects is shown. The tendency of the dynamics of the highest moisture loss by plants of the control group and the lowest by plants cultivated at PEG–6000 at a concentration of 200 mmol/l was noted, which indicates the adaptive effect of this level of osmotic stress on Sedum hybridum plants. To obtain a completely dry Sedum hybridum mass for various physiological experiments, it is necessary to maintain the plant material at a temperature of 105⸰ C, with at least 40 hours.
BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series, 2019
Vestnik of Samara University. Natural Science Series, 2017
The resistance to osmotic and salt stress 9 alloplasmatic wheat lines derived from crosses of var... more The resistance to osmotic and salt stress 9 alloplasmatic wheat lines derived from crosses of varieties Mironovskaya 808 with T. dicoccum Shuebl. was analyzed. The ability of seedlings to transfer a substantial water deficit, the abil ity to accumulate biomass, changes in growth parameters and water content in leaves and roots under stress were identified. High stability of the studied lines was demonstrated.
IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future", 2019
Пленарные доклады 1Казанский институт биохимии и биофизики-обособленное структурное подразделение... more Пленарные доклады 1Казанский институт биохимии и биофизики-обособленное структурное подразделение ФИЦ КазНЦ РАН, Казань, Россия 2Казанский (Приволжский) федеральный университет, Казань, Россия, 3Федеральное государственное бюджетное учреждение науки Институт биохимии и физиологии растений и микроорганизмов РАН, Саратов, Россия, 4Институт органической и физической химии им. А.Е. Арбузова-обособленное структурное подразделение ФИЦ КазНЦ РАН, Казань, Россия
Molecules
In terms of prevalence, thyroid pathology, associated both with a violation of the gland function... more In terms of prevalence, thyroid pathology, associated both with a violation of the gland function and changes in its structure, occupies one of the main places in clinical endocrinology. The problem of developing low-toxic and highly effective herbal preparations for the correction of thyroid hypofunction and its complications is urgent. Salidroside is a glucoside of tyrosol, found mostly in the roots of Rhodiola spp., and has various positive biological activities. The purpose of this study was to study the antihypothyroid potential of salidrosid-containing extract from R. semenovii roots, which was evaluated on a mercazolyl hypothyroidism model. We showed that extract containing salidroside is a safe and effective means of hypothyroidism correction, significantly reducing (p ≤ 0.001) the level of thyroid-stimulating hormone and increasing the level of thyroid hormones. The combined use of R. semenovii extract with potassium iodide enhances the therapeutic effect of the extract by ...
Experimental Biology, 2018
Deficit of water is a key stressor in global climate change conditions. The studying the influenc... more Deficit of water is a key stressor in global climate change conditions. The studying the influence of nucleus-cytoplasm relations can be helped to the better understanding of the process of plant adaptation to drought conditions. The aim of the study was the analyze of changes in growth parameters and pigment complex of seedlings of hybrids and alloplasmatic lines of wheat, obtained as a result of interspecific crosses, when exposed to induced drought. Investigated the 10-day wheat seedlings, which was growed in optimal and stressful conditions simulated in water culture. The content of chlorophyll and carotenoids of leaf plates was determined spectrophotometrically in alcohol extracts. It is shown that the change in the growth activity of seedlings is determined not only by the activity of the root system under drought conditions, but may be associated with optimization in the photosynthetic apparatus. It is noted that a combination of nuclei and cytoplasm belonging to different species can both improve and worsen important physiological parameters of stress resistance and photosynthetic activity. The most tolerant to drought alloplasmic lines D-d-05 b, D-b-05, D-41-05 and the most sensitive forms – allolinia D-f-05 and hybrid A1 were identified. Key words: wheat, interspecific hybrids, alloplasmic lines, drought tolerance, photosynthesis
Metabolites
Rhodiola semenovii Boriss. (Regel and Herder) might be a promising replacement for the well-known... more Rhodiola semenovii Boriss. (Regel and Herder) might be a promising replacement for the well-known but endangered Rhodiola rosea L. In this research, the metabolic profile of R. semenovii, including drug-active and stress-resistant components, was studied in the context of source–sink interactions in situ in the dynamics of growth and development. Gas chromatography with mass spectrometric detection and liquid chromatography methods were used. The data obtained allow for assumptions to be made about which secondary metabolites determine the level of stress resistance in R. semenovii at different stages of ontogeny in situ. For the first time, an expansion in the content of salidroside in the above-ground organs, with its maximum value during the period of seed maturation, and a significant decrease in its content in the root were revealed in the dynamics of vegetation. These results allow us to recommend collecting the ground component of R. semenovii for pharmaceutical purposes thro...
The article presents the results of a study of drought tolerance of two species and two interspec... more The article presents the results of a study of drought tolerance of two species and two interspecific hybrids (alloplasmic lines) of wheat according to the anatomy and photosynthetic activity of leafblades under conditions of induced osmotic stress. The negative effect of drought on the leaf anatomicalstructure and on such photosynthetic parameters as the maximum quantum yield of photosynthesis ofphotosystem II (Fv/Fm) and a change in the electron transport through photosystem II (ETR) was shown.The quantum yield of controlled energy dissipation (Y (NPQ)) and the quantum efficiency of unregulatedenergy dissipation of PSII (Y (NO)) were experimentally determined. It was shown that the increase orpreservation of the size of the protective and mechanical tissues of the leaf unchanged under stress canserve as criteria for the selection of drought-resistant forms of wheat in the early stages of ontogenesis.It was clearly reflected that a decrease in the ETR level during stress can be ass...
Plants, 2022
In this article, for the first time, an experimental study of the effect of mild and moderate osm... more In this article, for the first time, an experimental study of the effect of mild and moderate osmotic stress, NaCl content and the effect of low positive temperature on photosynthetic activity and composition of metabolites of immature plants Sedum hybridum L. is reported. In this representative of the genus Sedum adapted to arid conditions and having the properties of a succulent, a change in photosynthetic activity and an increase in the level of protective metabolites in the shoots were revealed when exposed to mild and moderate stress factors. The results of this study can be used in work on the adaptation of succulent plants to arid conditions, environmental monitoring and work on the directed induction of valuable secondary metabolites in succulents to obtain new herbal medicines.
Bulletin of the Karaganda University. “Biology, medicine, geography Series”, 2021
Thyroid pathology has a leading position in clinical endocrinology. Diseases of the thyroid gland... more Thyroid pathology has a leading position in clinical endocrinology. Diseases of the thyroid gland in terms of prevalence are comparable with diabetes mellitus, and far ahead of other endocrine disorders. Current treatment approaches of hypothyroidism are rarely based on the pathogenesis, and are reduced to hormone replacement therapy. The purpose of this study is to determine the general hematological parameters after correction of experimental hypothyroidism with an extract of the root of the plant R. semenowii both alone and in combination with potassium iodide. As a result of the study, we found that in the experimental treatment of hypothyroidism, the extract of the root of R. semenowii B. with a predominant content of rhodioflavonoside has a pronounced therapeutic effect, expressed in the normalization of the level of pituitary and thyroid hormones. The obtained results indicate the absence of toxic and damaging effects such as activation and inhibition of hematopoiesis after e...
Abstract: Purpose of this work was to study changes in the ion balance under salt stress in roots... more Abstract: Purpose of this work was to study changes in the ion balance under salt stress in roots and leaves of seedlings of T. aestivum L. and its wild congeners with different genomic composition. Laboratory assessment of salt tolerance in seedlings was carried out and contents of ions K+, Na+ and Ca2+ in roots and leaves were defined. Considerable change of ionic balance in roots and leaves of studied forms of wheat against salt stress is shown. It is noticed that the parity K+/Na+ decreases in process of strengthening of salt stress. Authentic negative correlation between a relative gain of a biomass of leaves and roots in the stress conditions and accumulation of ions Na+ and between a relative gain of a biomass of leaves in the stress conditions and a parity in them of ions K+/Na+ is revealed. The research results also show that the stability characteristics of indicators of changes in ionic composition or balance in the leaves of young plants are more informative than in the roots and allow to reveal the form, characterized by relatively high of K+/Na+ ratio and the relatively low accumulation of Ca2+ as the most resistant to salt stress. Key words: Saline stress response, plantlets, ions, T. aestivum L., wild congeners.
Current Science, 2017
Studying of influence of drought to growth and anatomic parameters of the top tier leaves of diff... more Studying of influence of drought to growth and anatomic parameters of the top tier leaves of different wheat species was the purpose of this work. To detect differences between species differing in ploidy level there were identified anatomical features of the structure of inner and external surface of the leaves of each of the studied species, grown under normal conditions and under the induce drought stress. It was revealed that osmotic stress has an impact on the studied parameters of leaves of all the studied species and that change of anatomical structure of a blade of a flag leaf can influence the adaptation potential of the species. It is noted that hexaploid species have more quantity of adaptable mechanisms than di- and tetraploid species concerning protection against drought. It is shown that thickness of abaxial epidermis and the size of the central conducting bundle are correlatively connected with the size of a flag leaf in case of drought, they not depend on the ploidy ...
New information on not specificity of reaction of plant cells of different species of wheat on ac... more New information on not specificity of reaction of plant cells of different species of wheat on action of abiotic stresses of in vitro was received. It is shown that callus tissue in vitro can serve as a model system to study some stability parameters of cereals to abiotic stresses. The opinion on need more the fissile use of cytologic methods in physiology, plant breeding and biotechnology of plants for diagnostics and selection of stress-resistant forms of the major crops is expressed. Key-Words: Wheat species, abiotic stresses, nonspecific violations, callus, growth, cytological reactions
Experimental Biology, 2020