Nataliia Nuzhyna

Kyiv Taras Shevchenko National University, Ukraine · Institute Biology and Medicine

This review presents the results of multi-year efforts for the development and integral investigation of the collection of Deschampsia antarctica É. Desv. plants originated from the maritime Antarctic. To create the collection, we have optimized the procedures and conditions for germination of seeds and generation of aseptic plants in vitro togethe...

In the course of evolution, the formation of succulent variations in the underground and surface parts of plants in different taxa could occur simultaneously under the influence of similar abiotic factors, in particular as an adaptation to arid conditions, and similar structural features even in distant families are a manifestation of convergent ev...

Aim. The Pelargonium sidoides DC. is a valuable medicinal plant, and its irrational use in nature may lead to the species receiving rare status in the future. Obtaining P. sidoides hybrids with a higher content of phenolic compounds will expand the range of plants used in the pharmaceutical industry and reduce the pressure on natural resources. The...

The water parameters of the leaves of 9 species of medium-sized trees (Aesculus pavia L., Aralia elata (Miq,) Seem., Broussonetia papyrifera (L.) L’Hér. ex Vent., Cercis canadensis L., Platycarya strobilacea Siebold & Zucc., Prunus dulcis (Mill.) D.A.Webb., Tetradium daniellii (Benn.) T.G. Hartley, Zizyphus jujuba Mill., Robinia viscosa Vent.) and...

Aim. To establish the dependence of free proline concentration in plant tissues of in vitro and ex vitro alpine species of Gentiana lutea L., Gentiana punctata L., Gentiana acaulis L. on light conditions of their cultivation and the source of carbon in the nutrient medium; to analyze expediency of free proline amino acid use as a biological marker...

Raw materials derived from the species Potentilla alba L. have been widely used in medicine. It has been shown that roots and rhizomes contain compounds with a number of antioxidant properties that may support therapeutic, namely anti-inflammatory and adaptogenic effects. The species is also promising in the complex treatment of thyroid pathology....

We studied the anatomical features of the leaf structure of Deschampsia antarctica É. Desv. (Poaceae) obtained from seeds collected from different habitats of the maritime Antarctic. These plants have been maintained in culture in vitro for more than 7 years. The plants include stable chromosome forms comprising diploids (2 n = 26), a diploid plant...

The anatomical and morphological structure of the seeds and vegetative organs of the endemic caudiciform plant of South Africa Petopentia natalensis (Schltr.) Bullock (Apocynaceae) has been investigated at different stages of ontogenesis: seedlings, juvenile and immature plants. It has been noticed that endosperm of P. natalensis seeds is developed...

Plant adaptation to climate conditions of certain territories has emerged within the course of evolution, shows at all organizational levels from morphological-anatomical to biochemical and is embedded into the plant genes. Survival of plants in such conditions as rapid temperature drops and rises in the range of 20 °C or more depends on their bioc...

The aim. To find out the morphology of the seeds and the features of its germination and to study the development of Uncarina roeoesliana Rauh (Pedaliaceae) plants in the early stages of ontogeny in connection with the problem of a seed germination and their cultivation under introduction. Materials and methods. The latent and pregenerative period...

In connection with global climatic changes, which are accompanied by sharp temperature fluctuations, it is important to study the heat resistance of relict plants in order to improve the understanding of the mechanisms of adaptation and survival of organisms in these conditions. Identification of rare and useful plant species more resistant to high...

This paper presents a comparative study on the anatomy of the Antarctic hair-grass (Deschampsia antarctica É. Desv.) from natural populations of two distant maritime Antarctic regions: the Argentine Islands (Antarctic Peninsula region) and the Point Thomas oasis (King George Island, South Shetland Islands). Comparison of D. antarctica plants from n...

Aim. Anatomical structure comparison of normal and vitrified Salvia scabiosifolia Lam plants in vitro; nutrient medium growth regulator selection for vitrification minimization. Methods. In vitro culture methods were used. Plants were grown on MS nutrient medium, enriched by peroxyacetic and indoleacetic acids and BAP with different combinations an...

The heat and drought resistance of plants depend on their anatomical and biochemical features. In the present study, the adaptive features of three species of wild rose (Rosaceae, Rosales) under the short-term impact of high-temperature stress have been characterized. Plants of the species Rosa donetzica Dubovik, R. reversa Waldst. et Kit. and R. s...

Peppermint grass, as a raw medicinal plant material, has great importance for the pharmaceutical industry. The influence of clonal micropropagation and chemotherapy has been established in vitro on six breeds of Ukrainian selection peppermint plants, in particular on the sprouts’ conductive system structure and tissue development, general biomass a...

Одним із представників сукулентної флори острова Мадагаскар у колекції тропічних та субтропічних рослин Ботанічного саду ім. акад. О.В.Фоміна Київського національного університету імені Тараса Шевченка є Uncarina roeoesliana Rauh (Pedaliaceae). Рослина була описана наприкінці ХХ ст., а в колекції ботанічного саду перші екземпляри з’явились у 2005 р...

Aim. Preparation of aseptic seedlings Salvia hispanica L., callus initiation in vitro and establishment of primary explants suitable for the callus production. Methods. Seeds are sprouted on our own modification of conventional methods. The non-hormonal Murashige-Skoog agarized nutrient medium was used as basic medium for the experiments. Parts of...

High-mountain species, including species of Gentiana L. genus, have a narrow range of tolerance to many environmental factors. By the beginning of the 21st century, the reduction of their habitats in the flora of the Ukrainian Carpathians was related only to scientifically ungrounded harvesting of medicinal raw materials and pastoral practices. How...

The article presents the results of the ontogenesis study and complements the morphological description of the valuable medicinal plant Pelargonium sidoides, which is included in the Red List of Plants of South Africa, from the collection of succulents of the O. V. Fomin Botanical Garden. Unlike some species of the Pelargonium genus, which are stem...

New technologies of reintroduction of plant species presuppose implementing both traditional and biotechnological methods for obtaining certain planting materials. However, plants cultivated in vitro exist in specific conditions that lead to changes in their structural and functional state. This explains why it is hard for them to adapt to ex vitro...

Актинідія – це дводомна культура, і для забезпечення високої продуктивності її насаджень на ділянках необхідно одночасно висаджувати чоловічі та жіночі рослини у співвідношенні 1 до 5–7. Сортові жіночі рослини для насаджень одержують лише способом вегетативного розмноження, тоді як чоловічі рослини-запилювачі можуть бути як вегетативного, так і нас...

In our study, plants of different D. antarctica genotypes were grown in vitro under identical conditions, however, plants from different areas have distinct anatomical features. Plants of DAR12 genotype from isl. Darboux differ qualitatively from plants originated from other localities according to some parameters. However, we can not confirm that...

Deschampsia antarctica E. Desv. – the species that for a long time has been adapted for harsh living conditions in the periglacial zones of South America, Subantarctic and maritime Antarctic. These fact causes interest in studying of its adaptive mechanisms, in particular on the anatomical level. In our study, we investigated plants of various chro...

An increase in environmental temperature is one of the most common stress factors for plant organisms. The study of the plants’ adaptation to stress factors remains extremely important and relevant. This article presents the results of a acute short-term influence of hyperthermia on species of two subgenera of the genus Haworthia Duval. We investig...

It was shown that, for efficient production of regenerants in bread wheat, 18-day-old calli obtained from apical meristems of 3-day-old aseptic seedlings should be used. These calli show proliferative centers, with developed vascular system elements, that support the development of meristematic centers that later produce regenerants. It was shown t...

Data about changing the content of photosynthetic pigments in leaves of plants Rhododendron makinoi, R. degronianum, R. сallimorphum and R. brachycarpum after exposure to high temperatures are presented. Established degree of drought resistance of these plants. The most drought- and heat-resistant species are plants of Japanese origin.

It has been determined that under conditions of indoor and outdoor ponds of the A.V. Fomin Botanical garden biomorphological peculiarities of the root system of the introduced plants Nymphaea alba L., Nuphar lutea (L.) Sm. and N. pumila (Timm) DC did not change. The comparative-anatomic analysis of floating and emerged leaves in plants in indoor an...

p>Three-month-old seedlings of 11 species of the subfamily Cactoideae ( Melocactus bahiensis , Melocactus curvispinus , Echinopsis eyriesii , E. mirablis , E. peruviana , Oreocereus celsianus , Rebutia flavistyla , Rebutia minuscula , Astrophytum myriostigma , Mamillaria columbiana , and M. prolifera ) have been studied. These plants exhibit a unis...

The leaf anatomy of species of the genus Rosa : R. donetzica , R. kokanica , R. roxburhii , R. rugosa , R. spinosissima was studied. It was found that the plants R. donetzica and R. kokanica have very low drought tolerance by the anatomical structure. The plants of species R. rugosin and R. spinosissima have most xeromorphy features.

The anatomical research of the vegetative organs of the cytoplasmatic hybrid grown in vitro and containing the Brassica napus nucleus and the Lesquerella fendleri chloroplasts was carried out and compared to the parental forms. It was found that the anatomical structure of the cybrid is similar to rapeseed. Anomalous changes in the epithelial, pare...

p>The anatomy of Aylostera flavistyla, Mammillaria bocasana and Echinocactus grusonii stems was studied. Different trends of plants? adaptation to condition of water deficit were identified. It was shown that the most drought-resistant plant is E. grusonii, and the less drought-tolerant is M. bocasana.</p

The comparative characteristics of anatomical and morphological structure of leaves and the correlation between morphometric and quantitative indicators in 9 species of Agave L. from two subgenera have been given: subgenus Littaea: Agave attenuata, A. filifera, A. geminiflora, A. mitis; subgenus Agave: A. americana, A. fourcroydes, A. sisalana, A....

РЕЗЮМЕ. Проведено анатомічні дослідження вегетативних органів цитоплазматичного гібрида, який містить ядро Brassica napus та хлоропласти Lesquerella fendleri, у порівнянні з батьківськими формами. В дослідженнях використовували рослини, вирощені in vitro. Встановлено, що анатомічна будова цибрида є подібною до ріпака. Виявлено аномальні зміни в буд...

The data about changing of the content of photosynthetic pigments in leaves of plants Rosa donetzica, Rosa spinosissima, Rosa reversa after short-term exposure to high temperature (+40°C) are presented. It was established that the plants of species Rosa donetzica are is the least resistant of the studied species.

This paper presents the comparative anatomical and morphological characteristics of plants of two subgenera: Haworthia and Hexangularis. The study revealed two different strategies of adaptation to arid conditions of the growth of different subgenera of the genus Haworthia. Plants of the subgenus Haworthia adapted to arid conditions by increasing t...

Comparative analysis of the anatomical leaf structure of 13 species of the genus Neoregelia has done. Species differ mostly by morphometric and quantitative parameters of their leaves. Also trichomes of N. lilliputiana and N. pendula can be considered as markers of a species. Two possible ways of leaves adaptation to arid conditions on the anatomic...

The comparative analysis of structural features of some morphological characters has been conducted. Anatomic peculiarities of petioles of Asplenium × souchei Litard. and its parental forms (A. obovatum Viv. subsp. billotii (F.W. Schultz) O. Bolòs, Vigo, Masalles & Ninot and A. septentrionale (L.) Hoffm.) in correspond with systematics are mentione...

It was shown that dopamine via D1-receptors mediates the influence of melatonin on hypothalamic-adrenal axis in the evening and in the day, but it isn't in the morning and at the night. In addition dopamine via D1-receptors mediates the influence of melatonin on circadian system (suprachiasmatic nucleus and pineal gland) in bird in the evening.

The chemotaxonomic and anatomical differences between some species of the genus Geranium L. of the flora of Ukraine have been discovered: Geranium robertianum L., Geranium sibiricum L., Geranium sanguineum L. і Geranium macrorrhizum L.

The results of anatomical investigation of lamina and petiole of Geranium sanguineum L. are presented. Here were established anatomical features that characterize G. sanguineum as mesoxerophytic plant.

The chemotaxonomic and anatomical differences between some species of the genus Geranium L. of the flora of Ukraine have been discovered: Geranium robertianum L., Geranium sibiricum L., Geranium sanguineum L. and Geranium macrorrhizum L.

Male Japanese quails were treated with melatonin alone or melatonin combined with D1 and D2 dopamine receptor blockers. Following the treatment, hypothalamus, pituitary glands and testes were analyzed morphometrically. The results suggest the existence of an interaction between melatonin and dopaminergic system in the brain in the regulation of rep...

As is known, melatonin, was synthesized by the pineal gland, adjusts daily rhythms of activity of the majority of endocrine glands. But regulation itself circadian systems is investigated badly. There are data on participation of dopaminergic system in realization of melatonin effects, but role of D1-receptors of dopamine in it is investigated insu...