Violetta Kotseruba

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Analysis of the grass Zingeria trichopoda (2n = 8, 2C = 5.3 pg) revealed a dynamic evolution with the following characteristics. (i) Genomic in situ hybridization (GISH) demonstrates that Z. trichopoda evolved from an interspecific hybrid involving a species like contemporary Zingeria biebersteiniana (2n = 4) and a second species with a similar low number(More)
Chromosome structure and chromatin organisation of a two-chromosome model cereal Zingeria biebersteiniana (Claus) P. Smirnov were studied: nuclear DNA content was determined by microdensitometric analysis after Feulgen staining; Feulgen absorption at different thresholds of absorbance in interphase nuclei also provided evidence on the organisation of(More)
In the grass tribe Poeae a small group of taxa occur with an exceptionally low chromosome number of 2n=2x=4 belonging to the closely related genera Colpodium and Zingeria. To understand the formation of polyploids in this group we analyzed the evolution of allohexaploid Zingeriakochii (2n=12) and its presumable ancestral species. Genomic insitu(More)
The function of the phosphorylation of histone H3 at Ser 10 in plant cell division is uncertain. The timing correlates with chromosome condensation, and studies in plant meiosis suggest that it is involved in sister chromatid cohesion. In mitosis, plant chromosomes are highly phosphorylated in the pericentromeric region only. In order to modulate H3(More)
Allium Root-MCN bioassay was used to determine the cytotoxicity of 5 soil samples. Two types of soils were studied: contaminated one collected near of copper-smelters (the Middle Urals) and Ni-enriched soil from an area of a natural geochemical anomaly (the Polar Urals). We measured potentially mobile forms of metals in soils and water-soluble(More)
Data are presented on the intra- and interspecific differences/similarities in chromosomal patterns of Ac-like elements (hAT family) in ecologically contrasted populations of three Triticeae species - Aegilops speltoides, Triticum urartu, and Hordeum spontaneum. Application of original computer software made it possible to precisely map transposon clusters(More)
The problems associated with characteristics of the organization and evolution of the ITS1–5.8S rDNA–ITS2 region of 35S rRNA genes in the plant genome are discussed. It was demonstrated that phylogenetic hypotheses about the relationship of species and genera constructed based on the comparison of this region sequences in the nucleus genomes usually look(More)
Many cryptic species were found during the past few years in animals, fungi, and algae by their intraspecious genetic differentiation revealed by PCR-based methods. However, they were rarely found in plants. In this review, we summarized the information on the detection of cryptic species of spore and seed plants according to the data on genetic(More)