The article is concerned with issues of identity and the resonance that layers of being find across cultural/geographical contexts. It uses conversations between an Indian Muslim woman (the author), an indigenous Brazilian filmmaker, and a French Muslim activist across two meetings of the WSF as a thread of enquiry into the many layers of identity. The article attempts to examine how open the Forum is to the expression of various expressions of identity – some being more comfortably received than others. Through the juxtaposition of images and experiences, the article hopes to offer an insight into the very nature of the networking sought to be achieved by the Forum. It seeks to demonstrate how three individuals whose only connection is the WSF move from being three points on a fragmented triangle to a trio, indicating how relationships can move from the ephemerality of the Forum to an enduring connection.
The article is concerned with issues of identity & the resonance that layers of being find across cultural/geographical contexts. It uses conversations between an Indian Muslim woman (the author), an indigenous Brazilian filmmaker, & a French Muslim activist across two meetings of the WSF as a thread of inquiry into the many layers of identity. The article attempts to examine how open the Forum is to the expression of various expressions of identity -- some being more comfortably received than others. Through the juxtaposition of images & experiences, the article hopes to offer an insight into the very nature of the networking sought to be achieved by the Forum. It seeks to demonstrate how three individuals whose only connection is the WSF move from being three points on a fragmented triangle to a trio, indicating how relationships can move from the ephemerality of the Forum to an enduring connection. 10 References. Adapted from the source document.
Due to the aim the effect of pre-sowing treatment with a nonionic colloidal solution of the mix of copper, zinc, manganese and iron nanoparticles, cadmium ions and their combined action on the physiological and biochemical indices: the content of lipid peroxidation products and balance of photosynthetic pigments in green Lolo and red Lolo Ross varieties of Lactuca sativa L. was investigated. Spectrophotometric methods of investigating the content of peroxides, thiobarbiturate-active products (with use of the modified Kumar and Knowles method), as well as the content of the main photosynthetic pigments (chlorophyll a, b, a/b ratio, and the carotenoid content) with the Wintermans, de Mots calculations application were used. Due to the results, a decrease in the content of peroxides and growth of malonic dialdehyde was observed for most treatment variants of Lolo. The opposite tendency was observed for the Ross variety (the initial growth of these parameters under the nanoparticles influence decreased to the control during the fourteen-day exposure). The decrease of chlorophyll content was observed In the Lolo variety under the essential metal nanoparticles influence, in contrast to the action of cadmium.For the Ross variety, a significant reduction of both chlorophyll and carotenoid contents in all treatment types during exposure was calculated.The a/b-index for Lolo plants has significantly increased in variants of cadmium influence, for Ross plants the divergence of the influence of all treatment variants has been marked. As a result, the treatment with a mixture of essential nanometals showed additive stress-loading functions. It was observed in a growth of the level of lipid peroxidation products and the reduction of the photosynthetic pigment biomarkers in both varieties during the 0,1 mM cadmium exposure. The Lolo Ross variety showed a higher variability of results under different treatment, compared to the Lolo variety.
In recent years, xanthones have received considerable attention from scientists due to their biological activity: anticarcinogenic, antiviral, antibacterial, antioxidant, anti-inflammatory and other properties.Therefore they are useful for prevention and treatment of different diseases:cancer, Alzheimer's and Parkinson's disease, cardiovascular disorders, diabetes, etc. Extracts of different species of plants containing xanthones are components of chemotherapeutic and other medical drugs. In order to find the most sensitive and environmentally safe method of quantitative determination of xanthones in the plant material and the nutrient medium, known methods were tested and selected for the prototype Vyisochina G. I. et al., 2011 method, which uses ethanol as an extractor. As the plant material we used plants of different species that were grown under in vitro cultivation conditions on the agarized nutrient medium. This agarized nutrient medium was also used for the xanthone content analysis. Based on the performed research, modifications of the method for determining the content of xanthones were adapted to the in vitro conditions, which detail the specificity of extraction and quantitative calculation of the xanthone content in plant explants. Our own method of determination of these compounds in the agarized nutrient medium was developed as well. The method, that we proposed, will significantly speed up the process of xanthone detecting and will also increase their yield in biotechnological processes for obtaining the pharmacologically valuable secondary metabolites of phenolic nature.
According to the purpose of the work, the effect of cadmium ions on the water exchange parameters in green Lolo and red Lolo Ross varieties of Lactuca sativa L. was investigated. In the experiment one-month plants grown on the medium where 0.1 mM cadmium was added in the sulfate form for fourteen days were used. The investigated parameters included: water deficit index, relative turgescence, free water content, cellular juice concentration, stomatal density and condition, and tolerance index. The weighable, refractometric, microscopic and analytical methods of research were used during the investigation Due to the results, the various plant response to the cadmium ions action in these lettuce varieties was revealed. In particular, the water deficit growth, reduction of the relative turgescence parameter, the free water content and concentration of cellular juice compared with the control level during the exposure was recorded in the green Lolo variety. Whereas, the water deficit decrease, an increase in the parameters of relative turgescence and free water content to the fourteenth day of exposure was noted for the red Lolo Ross variety. And also the absence of a reliable difference in the parameter of the concentration of cell juice. In addition, in both varieties, there was an increase in xeromorphism of the leaf blades, and in particular the stomata density. But in Lolo variety, most were locked in, unlike the Ross variety. According to the characteristics of the water exchange and stomatal analysis, it can be argued about the higher adaptive capacities of the Lolo Ross variety to this stress factor, compared with the Lolo variety.
Has been described the phenology of deciduous magnolias growing ex situ in botanical gardens of Acad. O.V Fomin SRC "Institute of Biology" National Taras Shevchenko University of Kyiv and the University and Latvia (Riga). 9 species, 1 variety and 3 hybrids identical for both collections of botanical gardens were selected and used for phenological observations. The studied plants were resistant to winter and summer climatic factors, were marked the parameters that determine their plasticity in less precipitation in Ukraine and Latvia, as compared to the places of their natural habitat, and expanding the use of exotic species in landscaping design of the megapolises.
A new effective non-invasive method of screening of highly productive forms of buckwheat sowing (Fagopyrum esculentum Moench.) based on rapid testing of buckwheat seedling intensity exudation of organic acids root system in the laboratory is offered. Buckwheat seeds were germinated on agar gel layer which contains in its composition acid-base indicator followed by visual assessment of the indicator color changes around primary root and plants with the largest area of color change were selected. The effectiveness of the method was confirmed in the field conditions by phenotyping of plants and significant differences in determining the structure and yield performance of selected plants were found. Statistical analysis of indicators grain number and grain weight showed that these indicators in selected plants were over 6 times higher than in the control variant with the degree of reliability of 99%.
The historical sketch of the development of medical education and science at the Taras Shevchenko National University of Kyiv for the period 1840–2020 is given.
The historical sketch of agrarian science and education development at the Taras Shevchenko National University of Kyiv for the period 1834– 2019 is given.
The purpose of the work was to find out the features of manifestation of the features of the decorative nature of the species of the Magnoliaceae Juss. on the example of plants from the collection of the O.V. Fomin Botanical Garden of the ESC "Institute of Biology and Medicine" on the climatic conditions of the Kiev metropolis. This article provides detailed study the 12 leaf-declining species of the Magnoliaceae. We studied the complex and seasonal decorativeness, estimated decorativeness, determined the total annual indicator of decorativeness, investigated the seasonal rhythm of plant development on the basis of phenological observations. Basic physiological indicators that were taken into account: budding, opening of flower and vegetative buds, leaf formation, flowering and fruiting. All species that were investigated undergo a full cycle of seasonal development: beautifully bloom, develop and form normally developed fruits and seeds in conditions of ex situ of the Botanical Garden. The species are divided into two groups according to the beginning of the growing season: medium (L. chinense (Hemsl.) Sarg., L. tulipifera L., M. stellata (Siebold & Zucc.) Maxim., M. tripetala L., M. officinalis Rehder & E.H. Wilson, M. denudata Desr., M. liliiflora Desr., M. kobus DC., M. soulangeana Soul.-Bod., M. salicifolia(Sieb. Et Zuss.) Maxim., M. obovata Thunb.) and late (M. biondii Pamp.); into three groups according to the dates of flowering relative to the seasons of the year: early spring (M. stellata, M. denudata, M. salicifolia, M. kobus), late spring and early summer (L. chinense, L. tulipifera, M. tripetala, M. officinalis, M. liliiflora, M. soulangeana, M. obovata), middle summer (M. biondii). The high decorative of studied species (their total annual decorative rate is 4 points) and their high adoptative ability to changes of environmental conditions are concluded. Thus, there is a necessary to extend the using of magnolias in landscaping of urban landscapes as climate forming plants.
Callose and/or phenolic compounds accumulation, which leads to the plant cell wall reinforcement in the places of the host plant and pathogen contact, is one of the first plants reactions on to the pathogen. The local protective reaction causes systemic protective mechanisms that cover the entire plant organism. The purpose of the work was determination of callose and phenolic compounds content in winter wheat seedlings of Myronivska 808 and Renan varieties as constitutional and induced by the eyespot causal agent in the range of their titres active concentrations and comparison of these substances accumulation in time. Callose determination was carried according to the modified Kauss et al. method. Phenoliccompounds quantificationassaywas basedon Folin-Ciocalteu method. The content of constitutional and pathogen-induced callose and phenolic compounds in the winter wheat seedlings of Myronivska 808 and Renan varieties was determined. The higher content of constitutional callose and phenolic compounds at the initial stages of vegetation was established in the wheat seedlings of relatively resistant variety Renan than in the seedlings of the susceptible variety Myronivska 808, which is related with genetically determined resistance of this variety to the eyespot causal agent. More intensive pathogen-induced accumulation of callose was observed in wheat seedlings of Myronivska 808 variety, but this did not affect the overall effectiveness of protection against pathogen. The highest pathogen-induced callose accumulation in wheat seedlings of a relatively resistant variety Renan was under inoculum concentration 104 CFU/ml and in seedlings of the susceptible variety Myronivska 808 – 102 CFU/ml. It has been shown that the higher content of constitutional callose and phenolic compounds and their intensive accumulation under infection in the wheat seedlings of Renan variety, is a determinative factor of the resistance to the eyespot causal agent.
The aim of the investigation was to study the effect of colloidal solution of Cu2+ and Zn2+ nanoparticles on the pro/antioxidant balance, the content of photosynthetic pigments (chlorophylls a, b and carotenoids), the chlorophyll a/b ratio and the morphometric parameters (relative leaf water content, leaf area) of winter wheat Triticum aestivum L. varieties Acveduc (steppe ecotype, resistant to drought) and Stolichna (forest-steppe ecotype, sensitive to drought) under conditions of simulated drought. The drought was created by stopping of watering on the 8th day after emergence and maintaining the soil moisture at 30 % of the total moisture capacity for 3 days. Pre-sowing treatment of seeds with Cu2+ and Zn2+ nanoparticles was carried out by soaking of seeds in experimental solution (1 part of the mother colloid solution: 100 parts of water) for 4 hours. The control variant was soaked in distilled water. Then the seeds were washed and planted in a sand culture. The varietal specificity of the influence of a colloidal solution of metal nanoparticles on seedlings of the Acveduc and Stolichna varieties was revealed. Presowing treatment of seeds with Cu2+ and Zn2+ nanoparticles led to significant changes in the pro/antioxidant balance in leaves of seedlings, reducing the level of accumulation of TBARS, increasing the activity of key antioxidant enzymes (superoxide dismutase and catalase), stabilizing the content of photosynthetic pigments, increasing the relative water content in leaves and leaf area under simulated drought conditions. In general, under drought conditions, presowing of seed treatment with a colloidal solution of nanoparticles had a positive effect on the proantioxidant balance of plants and the morphometric parameters of leaves to a greater extent in seedlings of the steppe ecotype variety (Acveduc) and less in seedlings of the forest-steppe ecotype variety (Stolichna).
The historical overview of the development of biological education and science at the Kiev National Taras Shevchenko University for the period 1944-1959 years was given.
