Olga Cherepanova

• PhD
• Senior Researcher at Institute Botanic Garden, Ural Branch, Russian Academy of Sciences

Hybrid plants were verified in Betula nana populations of the Urals by flow cytometry and were especially numerous in the northern part of the region. ITS1 nucleotide sequences were obtained by Sanger sequencing. Based on their analysis, low differentiation was observed for B. nana and B. pubescens and associated with current and ancestral hybridiz...

The global change of the planet's climate is associated with increased concentration of greenhouse gases in the atmosphere, which is the result of irrational human economic activity. Wetlands are a natural and efficient store of carbon dioxide. It covers only about 6% of the land surface. Peatlands contain one-third of all soil carbon, or 600 billi...

Representatives of the genus Paeonia ( Paeonia L.) are economically and socially important ornamental plants. Moreover, some species are widely used in folk medicine. Various peony cultivars are prominent examples of active centuries-old plant breeding. They are commonly employed for soft landscaping of botanical gardens, urban landscapes, and hous...

Genetic polymorphism of B. nana along the Ural ridge is analyzed based on the variability of trnS-trnG, trnL-trnF, trnS-trnT, trnK1-trnK2, and matK1 cpDNA markers with the application of the RFLP method. Specimens of B. pubescens were additionally taken for comparative analysis. The research revealed 12 chlorotypes in B. nana and B. pubescens popul...

The Trans-Ural region is the southern point of the common heather (C. vulgaris) range. Field ecophysiological study of C. vulgaris plants transpiration intensity (IT) was carried out in connection with the problem of marginal populations adaptation to arid climate. The research was carried out in the forest-steppe of the Trans-Ural region (Kurgan r...

Analysis of chloroplast DNA sequences revealed a high polymorphism of the length and nucleotide composition of trnF–trnV and the intron trnL for Helmia section species of the genus Astragalus (Fabaceae). Molecular genetic studies of Astragalus species of the Helmia section were previously practically not carried out; sequencing of trnF–trnV and the...

The article presents the results of the study of fifty populations of common heather (Calluna vulgaris (L.) Hull) collected throughout its range. A phased comparative analysis (genetic, biochemical, anatomical, morphological, and ecological) was carried out with the estimation of indicators that included two key populations—Zavodouspenskoe (Pritobo...

To preserve biological diversity, it is necessary to determine the genetic structure of species populations, because this gives the most complete picture of the manifestation of polymorphism and makes it possible to detect genetically and phenotypically distinct subspecies. The information obtained will help determine the optimal habitat and protec...

There is a direct linear relationship between the total amount of carbon emitted by human activities and the level of warming on the Earth’s surface. At the same time, warming in the northern regions of Eurasia is faster than in the southern ones. In this work, we considered changes in atmospheric temperature and accumulation of precipitation in th...

We present preliminary results of the trnL-trnF cpDNA region analysis for some representatives of the g. Betula , out of which B. procurva can be considered the most interesting. The disjunctive range of this species is confined to the mountain system in southeast Central Asia (Pamir-Alai). The occurrence of the birch is isolated from the main rang...

Simulation of fire impact on forest floor renewal in pine forests was based on predictions for 2100 by the Canadian Climate Centre for increase in temperatures of by 4.5 °C and total precipitation by 14% in the West Siberian pre-forest-steppes and empirical regression relationships between them and the degree of burnt forest floor, as well as amoun...

The effect of two synthesized compounds of the 1,2,3-triazolo[5,1-b][1,3,4]thiadiazine class as well as three known plant growth regulators (gibberellic acid, thidiazurone and 6-benzylaminopyrine)on seed germination and growth of seedlings of B. napus of the “Heros” linear variety was studied. It was shown that treatment with gibberellic acid slowe...

The aim of the research was to determine the origin of an isolated Atlantic Azorean population of heather (Calluna vulgaris (L.) Hull). The chloroplast DNA analysis showed it possessed genetic affinities with 4 populations of the Dinaric-Pontic group in the extra glacial zone of the Mediterranean area as well as with a population from the Atlantic...

In this paper the results of the in vitro study of synthesized derivatives 1,2,3-triazolo-1,3,4-thiadiazine on morpho- and rhizogenesis, as well as tuberization of microplants of the “Irbitskiy” potato variety are described. It has been shown that the use of compounds of this series is very promising for acceleration of growth and development of ex...

The paper presents an analysis of the morphological, anatomical and biochemical parameters of callus culture of heather. Calluses were grown using new synthesized compounds.

The results of molecular-genetic studies on the Scots pine cenopopulations from the isolated gorges of the Central Caucasus are given. The quantitative assessment of genetic differentiation degree for the Scots pine cenopopulations from different altitudes in the area under survey has shown reliable differences between the studied samples of subpop...

The distribution of nine chloroplast DNA haplotypes in four insular North-Atlantic and four European coastal Atlantic populations of Calluna vulgaris in the glacial zone of the range has been analyzed in comparison with that in six marginal southern populations in the nonglacial zone of the Atlantic and Mediterranean regions. As a result, two hypot...

The distribution of nine chloroplast DNA haplotypes in four insular North-Atlantic and four European coastal Atlantic populations of Calluna vulgaris in the glacial zone of the range has been analyzed in comparison with that in six marginal southern populations in the nonglacial zone of the Atlantic and Mediterranean regions. As a result, two hypot...

The effects of microwave irradiation on the synthesis of (1,2,3-thiadiazol-4-yl)- and (1,2,3-thiadiazol-5-yl)imidazolidine-2,4-diones by cyclocondensation of the respective (1,2,3-thiadiazolyl)ureidoacetic acids were studied. The reactions were studied under the conditions of traditional heating at 140°C temperature and microwave irradiation at 170...

Geographic variation and differentiation of the chloroplast DNA haplotypes and morpho-anatomical leaf parameters were assessed in a number of eastern European groups of Calluna vulgaris (L.) Hull. populations and in the Pritobolien group of populations of this species in Western Siberia, which have long been isolated from the European populations....

Generalizations are made on the basis of results obtained in the course of long-term, stationary quantitative studies on phenogenetic divergence of P. sylvestris populations growing in an upland bog and the adjacent dry land area in the pre-forest-steppe zone of Western Siberia. Contrasting differences between the two edaphoecotopes and almost comp...

Analysis of geographic variation of chloroplast DNA in the eastern European and western Siberian (Tobol) groups of Calluna vulgaris populations isolated from each other for a long period of time has revealed distinct differentiation between them. It has been shown that three populations growing in the Russian Plain and Karelia share two haplotypes...

To analyze and quantitatively estimate the contribution of different factors of competition from the edificator tree stand to its effect on plants comprising the lower forest vegetation layer, a set of ecophysiologically based indices of root, light, and integrated competition has been proposed and tested. The results obtained in pine and spruce fo...