Papers by Victoria Tsygankova
Annali d’Italia №48 2023, 2023
Annali d’Italia VOL. 1 ISSN 3572-2436 Annali d’Italia (Italy’s scientific journal) is a peer-revi... more Annali d’Italia VOL. 1 ISSN 3572-2436 Annali d’Italia (Italy’s scientific journal) is a peer-reviewed European journal covering top themes and problems in various fields of science. The journal offers authors the opportunity to make their research accessible to everyone, opening their work to a wider audience. Chief editor: Cecilia Di Giovanni Managing editor: Giorgio Bini
Annali d’Italia, 2023
This article is devoted to the development of new environmentally friendly growth regulators of a... more This article is devoted to the development of new environmentally friendly growth regulators of an important technical crop – oilseed flax (Linum usitatissimum L.) of the cultivar Iceberg based on synthetic compounds, derivatives of N-oxide-2,6-dimethylpyridine (Ivin), 6-methyl-2-mercapto-4-hydroxypyrimidine sodium and po-tassium salts (Methyur and Kamethur). The effect of synthetic plant growth regulators Ivin, Methyur and Kamethur used separately or in complex with microfertilizers Rostok Extra and Radix Tim forte+ on the growth of oilseed flax of the cultivar Iceberg during the vegetative period was investigated. The stimulatory effect of synthetic plant growth regulators and microfertilizers on improving the growth indicators of oilseed flax of the cultivar Iceberg under the conditions of their separate use or complex use was established. The activity of the synthetic plant growth regulators Ivin, Methyur and Kamethur under the conditions of their separate use or complex use with microferti-lizers was similar to or exceeded the activity of the phytohormone auxin IAA (1H-indole-3-acetic acid). The high-est values of average length of shoots (cm) and average length of roots (cm) of oilseed flax of the cultivar Iceberg were obtained under conditions of separate use of synthetic plant growth regulators Methyur and Kamethur, or microfertilizers Rostok Extra and Radix Tim forte+, as well as under conditions of complex use of synthetic plant growth regulators with microfertilizers: Ivin+Radix Tim forte+, Methyur+Rostok Extra, Methyur + Radix Tim forte+, Kamethur+Rostok Extra, Kamethur+ Radix Tim forte+.
Keywords: oilseed flax (Linum usitatissimum L.), Ivin, Methyur, Kamethur, Rostok Extra, Radix Tim forte+.
Int J Med Biotechnol Genetics, 2023
The regulatory effect of synthetic plant growth regulators, pyrimidine and pyridine derivatives: ... more The regulatory effect of synthetic plant growth regulators, pyrimidine and pyridine derivatives: Methyur, Kamethur and Ivin,
as well as new synthetic compounds, pyrimidine derivatives, on growth and photosynthesis of microgreens of pea (Pisum sativum
L.) variety Slobozhansky whiskered was studied. The growth-regulating effect of synthetic plant growth regulators
Methyur, Kamethur, Ivin, as well as new pyrimidine derivatives, was compared with the growth-regulating effect of phytohormones
auxins IAA and NAA. The results obtained showed that synthetic plant growth regulators Methyur, Kamethur
and Ivin, as well as new synthetic compounds, pyrimidine derivatives at a concentration of 10-7M, have both auxin-like and
cytokinin-like effect on enhancing the growth of shoots and roots of three-week-old microgreens of pea (Pisum sativum L.)
variety Slobozhansky whiskered. It was also found that the synthetic plant growth regulators Methyur, Kamethur and Ivin,
as well as new synthetic compounds, pyrimidine derivatives at a concentration of 10-7M, exhibit a cytokinin-like effect on the
increasing the content of photosynthetic pigments (chlorophylls a, b, a+b and carotenoids) in the leaves of three-week-old
microgreens of pea (Pisum sativum L.) variety Slobozhansky whiskered. The use of synthetic plant growth regulators Methyur,
Kamethur and Ivin, as well as new synthetic pyrimidine derivatives at a concentration of 10-7M to improve the growth of
shoots and the roots of pea microgreens, as well as to increase the content of chlorophylls a, b, a+b and carotenoids in pea
microgreens is proposed.
Keywords: Pea microgreens; Shoots and Roots, Chlorophylls a, b, a+b and Carotenoids; IAA and NAA; Methyur; Kamethur; Ivin; Pyrimidine and Pyridine Derivatives.
The-scientific-heritage-No-116-116-2023, 2023
The scientific heritage (Budapest, Kossuth Lajos utca 84,1204, Hungary). The journal is registere... more The scientific heritage (Budapest, Kossuth Lajos utca 84,1204, Hungary). The journal is registered and published in Hungary. The journal publishes scientific studies, reports and reports about achievements in different scientific fields.
Sciences of Europe No 124 (2023), 2023
The journal is registered and published in Czech Republic (Křižíkova 384/101 Karlín, 186 00 Praha... more The journal is registered and published in Czech Republic (Křižíkova 384/101 Karlín, 186 00 Praha). Articles in all spheres of sciences are published in the journal.
Sciences of Europe., 2023
This work is devoted to the screening for new effective plant growth regulators based on syntheti... more This work is devoted to the screening for new effective plant growth regulators based on synthetic compounds, pyrimidine and pyridine derivatives. Study of the plant growth-regulating activity of synthetic compounds was carried out on spring barley (Hordeum vulgare L.) variety Avatar. The effect of synthetic compounds on the morphometric parameters of barley plants grown in laboratory conditions was studied. The plant growth-regulating activity of synthetic compounds was compared with the plant growth-regulating activity of phytohormones auxins IAA (1H-indol-3-yl)acetic acid) and NAA (1-naphthylacetic acid). The most biologically active synthetic compounds were selected, which show plant growth-regulating activity, similar to or exceeding the activity of auxins IAA and NAA. The highest parameters of the average length of the shoots, which exceeded similar parameters of control plants by 13.73-24.06 %, were obtained on 2-week-old barley plants treated with synthetic compounds, derivatives of sodium and potassium salts of 6-methyl-2-mercapto-4hydroxypyrimidine (Methyur and Kamethur), 6-methyl-2-propylsulfanyl-pyrimidin-4-ol, 2-benzylsulfanyl-6methylpyrimidin-4-ol, and sodium 4-hydroxypy-rimidine-2-thiolate, respectively. The highest parameters of the average length of the roots, which exceeded similar parameters of control plants by 66.67-121.35 %, were obtained on 2-week-old barley plants treated with synthetic compounds, derivatives of N-oxide-2,6dimethylpyridine (Ivin), sodium and potassium salts of 6-methyl -2-mercapto-4-hydroxypyrimidine (Methyur and Kamethur), 2-ethylsulfanyl-6-methylpyrimidin-4-ol, and 6-methyl-2-propylsulfanyl-pyrimidin-4-ol, respectively. The highest parameters of the average biomass of 10 plants, which exceeded similar parameters of control plants by 30.59-86.46 %, were obtained on 2-week-old barley plants treated with synthetic compounds, derivatives of N-oxide-2,6-dimethylpyridine (Ivin), sodium and potassium salts of 6-methyl-2-mercapto-4hydroxypyrimidine (Methyur and Kamethur), 6-methyl-2-propylsulfanyl-pyrimidin-4-ol, and sodium 4hydroxypyrimidine-2-thiolate, respectively. A comparative analysis of the growth-regulating activity of auxins showed that the morphometric parameters obtained on 2-week-old barley plants treated with IAA and NAA, exceeded similar parameters of control plants, as follows: plant shoot length by-7.51-20.57 %, plant root lengthby 15.45-32.81 %, plant biomassby 39.59-49.01 %, respectively. It was shown that pyrimidine and pyridine derivatives at a concentration of 10-7 M exhibit cytokinin-like activity in increasing the content of photosynthetic pigments in the leaves of barley plants. The content of chlorophyll a increased by 6.46-68.33%, chlorophyll b increased by 6.2-64.11%, chlorophyll a+b increased by 6.37-66.81%, carotenoids increased by 2.65-29.81%, respectively, compared with similar parameters of control barley plants treated with distilled water. The practical use of the synthetic compounds, pyrimidine and pyridine derivatives: Methyur, Kamethur, Ivin, and other selected most active synthetic compounds for improving the development of shoots and roots, increasing the biomass of spring barley (Hordeum vulgare L.) variety Avatar in the vegetative phase, and increasing the content of photosynthetic pigments in plant leaves is proposed.
Signaling and communication in plants, 2022
Our chapter is devoted to the biological screening of new effective substitutes of plant hormones... more Our chapter is devoted to the biological screening of new effective substitutes of plant hormones auxins and cytokinins among synthetic low molecular weight heterocyclic compounds, derivatives of pyridine, pyrimidines, pyrazolotriazinones, oxazoles, oxazolopyrimidines and isoflavonoids. The auxin-like and cytokinin-like activity of chemical low molecular weight heterocyclic compounds, derivatives of pyridine, pyrimidine, pyrazole, isoflavones, oxazolopyrimidine and oxazole was studied. A specific bioassay on auxin-like activity showed a high stimulating effect of the chemical heterocyclic compounds, derivatives of pyridine, pyrimidine, pyrazole and isoflavones used at the concentration 10–8 M on the formation of adventitious roots on the 14th-day-old leaf petioles isolated from seedlings of haricot bean (Phaseolus vulgaris L.) cultivar Belozernaya, which was similar or higher of the effect of plant hormones auxins IAA and NAA used at the same concentration 10−8 M. A specific bioassay on cytokinin-like activity showed a high stimulating effect of the chemical heterocyclic compounds, derivatives of pyridine, pyrimidine, pyrazole, isoflavones, oxazolopyrimidine and oxazole used at the concentrations 10–8 M and 10–9 M on the growth of biomass of 16th-day-old cotyledons isolated from seeds of muscat pumpkin (Cucurbita moschata Duch. et Poir.) cultivar Gilea, which was similar or higher of the effect of plant hormone cytokinin Kinetin used at the same concentrations 10–8 M and 10–9 M. The results obtained confirmed the inducing auxin-like and cytokinin-like effect of chemical low molecular weight heterocyclic compounds, derivatives of pyridine, pyrimidine, pyrazole, isoflavones, oxazolopyrimidine and oxazole on plant cell elongation, division, and differentiation that are the basic processes of plant growth. The practical application of derivatives of pyrimidine, pyrazole, isoflavones, pyridine, oxazolopyrimidine and oxazole as new plant growth regulators was proposed. Keywords Plant hormones IAA NAA Kinetin Pyridine Pyrimidine Pyrazole Isoflavones Oxazolopyrimidine Oxazole Phaseolus vulgaris Cucurbita moschataDuch. et Poir
JOURNAL OF ADVANCES IN BIOLOGY
Wheat is one of the economically important cereals that are widely used in the agricultural sect... more Wheat is one of the economically important cereals that are widely used in the agricultural sector of many countries. A very important issue is the development of new effective growth regulators to improve the growth and development of this crop in order to increase its productivity. In our investigations the regulating activity of the synthetic low molecular weight heterocyclic compounds, pyrimidine derivatives on growth and development of wheat (Triticum aestivum L.) variety Tyra was studied. It was found that the use of pyrimidine derivatives in a concentration of 10-7M in water solution revealed a positive effect on the growth and development of both shoot and root systems of wheat plants during the vegetation period. Comparative analysis of the growth regulating activity of synthetic compounds showed that the activity of pyrimidine derivatives was differentiated and depended on substituents in their chemical structure. The application of pyrimidine derivatives as new effective...
Journal Of Advanced Pharmacy Education And Research, 2022
This is an open access journal, and articles are distributed under the terms of the Creative Comm... more This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-Non Commercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
The recent innovation strategy used in the modern agricultural biotechnology is an elaboration of... more The recent innovation strategy used in the modern agricultural biotechnology is an elaboration of new effective and ecologically safe plant growth regulating substances on the base of synthetic low molecular weight five and six-membered heterocyclic compounds derivatives of pyridine, pyrimidine, pyrazole, oxazole, and isoflavones as an effective substitutes of phytohormones and traditional plant growth regulators to develop agricultural crops with genetically improved commercially important traits such as accelerated growth and development, increased plant productivity and improved quality of production, and enhanced plant tolerance to abiotic stress factors such as drought, salinity, heat, chilling, osmotic stress, soil pollution by anthropogenic factors, and to biotic stress factors such as pathogens and pests [1]. Maize (Zea mays L.) is ancient cereal crop traditionally used as source for dietary food and pharmaceutical industry due to high content of nutrients such as lipids, proteins, carbohydrates, vitamins, dietary fiber and biological active compounds in the seed and seed oil, and as raw material for the biofuel industry and animal feed [2]. Our work was aimed to study of plant growth regulating activity of new synthetic low molecular weight heterocyclic compounds phosphorylated derivatives of oxazole and pyrimidine with perspective their application as a new effective substitutes of phytohormones for improving of cultivation of maize (Zea mays L.) hybrid Palmyra FAO 190. The conducted in the laboratory conditions researches showed high growth stimulating auxin-like effect of tested chemical compounds on germination of seeds, growth and development of maize seedlings during the vegetation. The comparative statistical analysis showed that the biometric indexes of 14 th-day-old seedlings of maize grown on the water solution of heterocyclic compounds used at concentration 10-9 M were higher than the biometric indexes of 21 st-day-old seedlings of maize grown either on the distilled water (control) or on the water solution of auxins IAA and NAA used at the same concentration 10-9 M in average: at the 23 %-by total length of seedlings, 5-37 %-by total length of roots, and at the 7-87 %-by total number of roots. The positive effect of some from tested chemical heterocyclic compounds on increase of synthesis of photosynthetic pigments in the leaves of 14 th-day-old seedlings of maize was also found: the content of chlorophyll a was increased in average at the 5-10 %; the content of chlorophyll b was increased in average at the 10-74 %; the content of chlorophylls a+b was increased in average at the 5-11 %. The practical application in the agricultural biotechnology of synthetic low molecular weight heterocyclic compounds phosphorylated derivatives of oxazole and pyrimidine as new effective substitutes of phytohormones for improving of growth and development of maize (Zea mays L.) hybrid Palmyra FAO 190 was proposed. 1. V. Tsygankova, Y. Andrusevich, O. Shtompel, O. Myroljubov, A. Hurenko, R. Solomyanny, G. Mrug, M. Frasinyuk, O. Shablykin, V. Brovarets. Study of Auxin, Cytokinin and Gibberellin-like Activity of Heterocyclic Compounds Derivatives of Pyrimidine, Pyridine, Pyrazole and Isoflavones. European Journal of Biotechnology and Bioscience, 2016, 4(12): 29-44. 2. Shah T.R., Prasad K., Kumar P. Maize-A potential source of human nutrition and health: A review. Cogent Food & Agriculture. 2016, 2: 1166995.
The recent innovation strategy used in the modern agricultural biotechnology is an elaboration of... more The recent innovation strategy used in the modern agricultural biotechnology is an elaboration of new effective and ecologically safe plant growth regulating substances on the base of synthetic low molecular weight five and six-membered heterocyclic compounds derivatives of pyridine, pyrimidine, pyrazole, oxazole, and isoflavones as an effective substitutes of phytohormones and traditional plant growth regulators to develop agricultural crops with genetically improved commercially important traits such as accelerated growth and development, increased plant productivity and improved quality of production, and enhanced plant tolerance to abiotic stress factors such as drought, salinity, heat, chilling, osmotic stress, soil pollution by anthropogenic factors, and to biotic stress factors such as pathogens and pests [1-3]. Tomato is a commercially important food crop in the world. Tomato is a widely used crop, moreover, it is a source of carotenoids and flavonoids [4]. The protective properties of carotenoids are mainly due to their high antioxidant activity, as well as the antioxidant activity attributed to lycopene, which is an acyclic isomer of beta-carotene and is abundantly contained in red tomatoes [5]. Unlike beta-carotene, lycopene can not be metabolized to vitamin A in the human body, but it has a dual antioxidant potential of beta-carotene. The using of tomato and tomato products that contain lycopene reduces the risk of developing chronic diseases, such as cancer, cardiovascular and some age-related diseases [6]. This work is aimed to study of stimulating effect of new synthetic low molecular weight compounds derivatives of pyrimidine, on the growth and development of tomato (Solanum lycopersicum L.) plants under laboratory conditions. Key words: tomato (Solanum lycopersicum L.), auxins IAA and NAA, cytokinin Kinetin, synthetic low molecular weight heterocyclic compounds, pyrimidine, plant growth regulating activity, agricultural biotechnology.
Linum usitatissimum L. (flax or linseed) is one of the oldest economically important crops used i... more Linum usitatissimum L. (flax or linseed) is one of the oldest economically important crops used in biotechnology as a source for bioactive compounds. Flax fiber and seed have industrial significance as a source of cellulosic fiber for textile and paper industry and seed oil for pharmaceutical, cosmetic and food industry. The elaboration of new effective techniques for in vitro regeneration of Linum usitatissimum L. is very actual problem today. The influence of low molecular weight five and six membered heterocyclic compounds on organogenesis of Linum usitatissimum L. cultivar heavenly in vitro has been studied. It was found that heterocyclic compounds derivatives pyridine, pyrimidine, pyrazole and isoflavones revealed high stimulating effect on direct shoot organogenesis of Linum usitatissimum L. in vitro. The maximal shoot regeneration frequency was obtained on the MS media containing heterocyclic compounds at the concentration 10-8 M/l as compared to lower regeneration frequency obtained on the control MS medium containing 1 mg/l BAP and 0.05 mg/l NAA. The maximal index of explants with regeneration (in %) that exceeded almost twice the same index in control MS medium was obtained on the MS medium containing heterocyclic compound derivative of isoflavones. At the same time, the index of explants with regeneration (in %) that exceeded one and a half times the same index in control MS medium and the maximal index of shoots elongated more than 1 cm (in %) that exceeded almost twice the same index in control MS medium were obtained on the MS media containing heterocyclic compounds derivatives of pyridine, pyrimidine and pyrazole. The current study confirms perspective of using of low molecular weight five and six-membered heterocyclic compounds at the concentration 10-8 М/l of the MS medium as new effective substitutes of traditional growth regulators auxin NAA and cytokinin BAP for regeneration of Linum usitatissimum L. cultivar heavenly in vitro. Keywords: screening of new plant growth regulators, nitrogen-containing heterocyclic compounds, pyridine, pyrimidine, pyrazolotriazinone and isoflavones, Linum usitatissimum L., direct shoot organogenesis in vitro
Application of Oxazole and Oxazolopyrimidine as New Effective Regulators of Oilseed Rape Growth V... more Application of Oxazole and Oxazolopyrimidine as New Effective Regulators of Oilseed Rape Growth Victoria Tsygankova*, Yaroslav Andrusevich, Victor Kopich, Olexandra Shtompel, Yevheniia Veligina, Stepan Pilyo, Maryna Kachaeva, Andrii Kornienko, Volodymyr Brovarets Department for Chemistry of Bioactive Nitrogen-Containing Heterocyclic Compounds, Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, 1, Murmanskaya str., Kyiv, Ukraine.
International Journal of Botany Studies, 2018
Tomato (Solanum lycopersicum L.) is a major agricultural crop cultivated over the world. The elab... more Tomato (Solanum lycopersicum L.) is a major agricultural crop cultivated over the world. The elaboration of new effective plant growth regulators for improving growth of tomato is an important task for plant biotechnology. In the present work the comparative effect of plant hormones auxins IAA and NAA, cytokinin Kinetin, and new synthetic compounds pyrimidine derivatives on acceleration of vegetative growth of tomato was studied. The obtained biometric indices of 24 th-day-old tomato seedlings grown on the water solution of pyrimidine derivatives used at the concentration 10-8 M were similar or higher of the biometric indices of tomato seedlings grown on the distilled water (control), or on the water solution of IAA, NAA and Kinetin used at the same concentration 10-8 M in average: at the 29-255 %, 22-235 %, 10-156 %, and 13-95 %-by total number of roots, and at the 23-255 %, 21-115 %, 19-138 %, and 9-61 %-by total length of roots, respectively. The content of photosynthetic pigments in tomato seedlings grown on the water solution of pyrimidine derivatives was increased in average: chlorophyll a-at the 17-116 %, 17-122 %, 19-22 %, and 19-52 %; chlorophyll bat the 19-155 %, 21-161 %, 12-45 %, and 11-81 %; chlorophylls a+b-at the 16-126 %, 13-132 %, 23-28 %, and 14-60 %; carotenoids-at the 15-86 %, 19-107 %, 20-31%, and 16-50 %, as compared with similar indices of tomato seedlings grown on the distilled water (control), or on the water solution of IAA, NAA and Kinetin, respectively. The content of total soluble proteins in tomato seedlings grown on the water solution of pyrimidine derivatives was increased in average: at the 40-241 %, 9-145 %, 15-122 %, and 17-123 %, as compared with similar indices of tomato seedlings grown on the distilled water (control), or on the water solution of IAA, NAA and Kinetin, respectively. The relationship between chemical structure and plant growth regulatory activity of pyrimidine derivatives was set. The highest growth regulatory activity revealed the compounds, derivatives of dihydroimidazo[1,2-c]pyrimidine. The obtained results confirmed the possibility of application of pyrimidine derivatives as new effective regulators of vegetative growth of tomato.
European Journal of Biotechnology and Bioscience, 2016
Impact of microbial biostimulants on the increase (up to 75-87%) of resistance of wheat plants of... more Impact of microbial biostimulants on the increase (up to 75-87%) of resistance of wheat plants of two varieties Yatran 60 and Zimoyarka to the cereal cyst nematode Heterodera avenae was found. The increase of difference in the index of Dot-blot hybridization (up to 37-65%) between cytoplasmic mRNA and si/miRNA isolated from control and experimental (affected by nematode and treated with biostimulants) plants was observed. In the wheat embryo cell-free system the increase of silencing activity (up to 48-78%) of si/miRNA isolated from experimental as compared to control wheat plants was revealed. These data indicate that microbial biostimulants cause reprogramming wheat genome by inducing synthesis si/miRNA with immuneprotective properties against nematode; as a result the wheat resistance to nematode invasion is increased. To obtain new lines of wheat cells resistant to nematode H. avenae the microbial biostimulants were used for preparing of MS media for cultivation of isolated whea...
This book covers all areas of biotechnology, genetics and other related fields. The contributions... more This book covers all areas of biotechnology, genetics and other related fields. The contributions by the authors include biosurfactants; antimicrobial activity; bio-preservation; shelf life; plasmid; algal plasmid; plasmid like DNA; fungal contamination; mycotoxins; Detarium microcarpum; Brachystegia eurycoma; Huanglongbing disease; Candidatus liberibacter asiaticus; citrus; Jatropha curcas; euphorbiaceae; essential oil; palmitic acid; linoleic acid; alloisolongifolene; β-farnesene; moisture barrier; shelf-life of horticultural produce; SGOT; SGPT; alloxan monohydrate; aspirin; membrane stabilization; cellulase activity; actinomycetes; fermentation; carboxymethyl cellulose; xylanolytic activity; Trametes sp.; Annona senegalensis; Oulotricha subspecies; thermophiles; bacterial isolates; antibiotic resistance; pathogenicity; urinary tract infections; Dental Pulp Stem Cells (DPSC); Bone Morphogenic Protein (BMP-2) etc. This book contains various materials suitable for students, researchers and academicians in the field of biotechnology and genetics. Key words: Biotechnology, Genetics
Journal of Complementary Medicine & Alternative Healthcare, 2019
Introdution Plants have been indispensable sources of both preventive and curative medical prepar... more Introdution Plants have been indispensable sources of both preventive and curative medical preparations in centuries [1,2]. According to the World Health Organization (WHO), estimates of up 80% of the world's population, mostly in the developing countries have adapted trado-medicinal curative practices in health needs [3]. With a value in therapeutics, plant part preparations are used in China, France and Germany as herbal remedies with less stringent side effects as assumed in the medical world [2]. Plants have been recorded as containing phtochemicals which act as antioxidants, interfere with hormonal actions, stimulate body enzymes, interfere with DNA replication, inhibit bacterial function (bacteriocidal or bacteriostatic) [4]. In the present investigation, certain plants in Nigeria, West Africa used in trado-medical treatment of typhoid fever and arthritis were screened for phyto-chemical properties with a view to justifying their application in Nigerian traditional curatives and the possibility of the development of drugs of herbal sources for human health. Materials and Methods Collection of plants Plants used in traditional practice for the treatment of arthri tis and typhoid fever: Morinda lucida, Cymbopogon citratues, Citrus aurantifolia, Citrus paradisi, Blighia Sapida were obtained along the Polytechnic Road,
International Journal of Medical Biotechnology & Genetics, 2017
Introduction α-Amylases are starch degrading enzymes that catalyze the hydrolysis of α-1,4-O-glyc... more Introduction α-Amylases are starch degrading enzymes that catalyze the hydrolysis of α-1,4-O-glycosidic bonds in polysaccharides with the retention of α-anomeric configuration in the products. Most of the α-amylases are metalloenzymes which require calcium ions (Ca 2+) for their activity, structural integrity and stability [1]. Amylases are one of the most important industrial enzymes that have a wide variety of applications ranging from conversion of starch to sugar syrups, to the production of cyclodextrins for the pharmaceutical industry. These enzymes account for about 30% of the world's enzyme production [2]. The α-amylase family can roughly be divided into two groups: the starch hydrolyzing enzymes and the starch modifying or transglycosylating enzymes [3]. It has been variously documented that the fungi are capable of production of enzymes including the α-amylases [4, 5].
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Papers by Victoria Tsygankova
Keywords: oilseed flax (Linum usitatissimum L.), Ivin, Methyur, Kamethur, Rostok Extra, Radix Tim forte+.
as well as new synthetic compounds, pyrimidine derivatives, on growth and photosynthesis of microgreens of pea (Pisum sativum
L.) variety Slobozhansky whiskered was studied. The growth-regulating effect of synthetic plant growth regulators
Methyur, Kamethur, Ivin, as well as new pyrimidine derivatives, was compared with the growth-regulating effect of phytohormones
auxins IAA and NAA. The results obtained showed that synthetic plant growth regulators Methyur, Kamethur
and Ivin, as well as new synthetic compounds, pyrimidine derivatives at a concentration of 10-7M, have both auxin-like and
cytokinin-like effect on enhancing the growth of shoots and roots of three-week-old microgreens of pea (Pisum sativum L.)
variety Slobozhansky whiskered. It was also found that the synthetic plant growth regulators Methyur, Kamethur and Ivin,
as well as new synthetic compounds, pyrimidine derivatives at a concentration of 10-7M, exhibit a cytokinin-like effect on the
increasing the content of photosynthetic pigments (chlorophylls a, b, a+b and carotenoids) in the leaves of three-week-old
microgreens of pea (Pisum sativum L.) variety Slobozhansky whiskered. The use of synthetic plant growth regulators Methyur,
Kamethur and Ivin, as well as new synthetic pyrimidine derivatives at a concentration of 10-7M to improve the growth of
shoots and the roots of pea microgreens, as well as to increase the content of chlorophylls a, b, a+b and carotenoids in pea
microgreens is proposed.
Keywords: Pea microgreens; Shoots and Roots, Chlorophylls a, b, a+b and Carotenoids; IAA and NAA; Methyur; Kamethur; Ivin; Pyrimidine and Pyridine Derivatives.
Keywords: oilseed flax (Linum usitatissimum L.), Ivin, Methyur, Kamethur, Rostok Extra, Radix Tim forte+.
as well as new synthetic compounds, pyrimidine derivatives, on growth and photosynthesis of microgreens of pea (Pisum sativum
L.) variety Slobozhansky whiskered was studied. The growth-regulating effect of synthetic plant growth regulators
Methyur, Kamethur, Ivin, as well as new pyrimidine derivatives, was compared with the growth-regulating effect of phytohormones
auxins IAA and NAA. The results obtained showed that synthetic plant growth regulators Methyur, Kamethur
and Ivin, as well as new synthetic compounds, pyrimidine derivatives at a concentration of 10-7M, have both auxin-like and
cytokinin-like effect on enhancing the growth of shoots and roots of three-week-old microgreens of pea (Pisum sativum L.)
variety Slobozhansky whiskered. It was also found that the synthetic plant growth regulators Methyur, Kamethur and Ivin,
as well as new synthetic compounds, pyrimidine derivatives at a concentration of 10-7M, exhibit a cytokinin-like effect on the
increasing the content of photosynthetic pigments (chlorophylls a, b, a+b and carotenoids) in the leaves of three-week-old
microgreens of pea (Pisum sativum L.) variety Slobozhansky whiskered. The use of synthetic plant growth regulators Methyur,
Kamethur and Ivin, as well as new synthetic pyrimidine derivatives at a concentration of 10-7M to improve the growth of
shoots and the roots of pea microgreens, as well as to increase the content of chlorophylls a, b, a+b and carotenoids in pea
microgreens is proposed.
Keywords: Pea microgreens; Shoots and Roots, Chlorophylls a, b, a+b and Carotenoids; IAA and NAA; Methyur; Kamethur; Ivin; Pyrimidine and Pyridine Derivatives.
Victoria Anatolyivna Tsygankova * 1 , Iryna Valeriivna Voloshchuk 1 , Stepan Grihorovych Pilyo 2 , Svitlana Viktorivna Klyuchko 1 , Volodymyr Serhiyovych Brovarets 2
1 Department for Chemistry of Bioactive Nitrogen-Containing Heterocyclic Compounds, V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry (IBOPC) of the National Academy of the Sciences (NAS) of Ukraine, Kyiv, Ukraine, East Europe
2 Department for Chemistry of Bioactive Nitrogen-Containing Heterocyclic Compounds, V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, 1, Academician Kukhar str., 02094, Kyiv-94, Ukraine
Academic Editor: Gianni Bellocchi
Published: 26 October 2023 by MDPI in The 3rd International Electronic Conference on Agronomy session Poster session https://doi.org/10.3390/IECAG2023-15222 (registering DOI)
Abstract:
Sorghum is one of the most important food, fodder and technical crops grown in the world. Global climate change and environmental pollution with toxic industrial and agricultural waste are the most unfavorable environmental factors affecting the growth and development of sorghum, which leads to a decrease in product quality. The main purpose of this work is to study the effect of new plant growth regulators Methyur (derivative of sodium salt of 6-methyl-2-mercapto-4-hydroxypyrimidine), Kamethur (derivative of potassium salt of 6-methyl-2-mercapto-4-hydroxypyrimidine) and Ivin (N-oxide-2,6-dimethylpyridine) on the productivity of field-grown sorghum. Field experiments were carried out on grain sorghum (Sorghum bicolor L.) cv. Yarona, and sweet sorghum (Sorghum saccharatum L.) cv. Favorite. Statistical analysis showed that the productivity parameters of 4 month-old sorghum plants obtained from seeds treated before sowing in the soil with water solution of Methyur, Kamethur or Ivin at a concentration of 10-7M, increased as follows: the average panicle length (in cm) increased by 7% - 20% - for grain sorghum cv. Yarona and by 25% - 37% - for sweet sorghum cv. Favorite, accordingly, and the average fresh weight of grain (in gram) increased by 13% – 26% - for grain sorghum cv. Yarona, and by 24% - 38% - for sweet sorghum cv. Favorite, compared to control.
Keywords: wheat; auxins; pyridine; pyrimidine.