@ARTICLE{TsitGen91, author = {Blankovskaya, T., F. and Kirilenko, N., A.}, title = {[Morphometric Analysis of Zygote during Its Maturation in Wheat and Rye].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {12--16}, number = {3}, abstract = {The size of cell, nucleus, and nucleolus was measured and the nucleus--to--nucleolus ratio was determined during zygote maturation in durum and soft wheat and rye under intravarietal pollination as well as under crossing of durum wheat with soft wheat and rye. The fluctuations of cell, nucleus, and nucleolus volumes during zygote maturation were observed. The curves percent ratio of these volumes to corresponding volume of egg cell have two peaks. There are differences between hybrid zygotes and parental forms in these indices.}, } @ARTICLE{TsitGen92, author = {Zhebentyayeva, T., N.}, title = {[Hybridization and Genetic Control of Esterase in Apricot].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {17--21}, number = {3}, abstract = {Inheritance of esterase was studied in nine segregating progenies. It was established that fast migrating components are controlled by two loci, Est--1 (monomeric a--esterase) and Est--2 (dimeric b--esterase). Their polymorphism is determined by three active alleles, a, a¢, b for Est--1 and a, b, c for Est--2, respectively. Allelic frequencies and heterozygosity of loci in ecological--geographical groups and Central Asian subgroups were estimated. Genetic control of esterase in stone fruits was proposed for the first time.}, } @ARTICLE{TsitGen93, author = {Rudenko, S., S. and Morozova, T., V. and Kostyshyn, S., S. and Strelchenko, E., D.}, title = {[Peculiarities of the Influence of Chemical and Physical Factors on Cytogenetic Indices of Root Meristem in Pisum sativum L.].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {22--27}, number = {3}, abstract = {The results of comparative analysis of cytogenetic effects of various chemical and physical factors on meristemic cells of field pea (Pisum sativum L.) are presented. Cytogenetic effects of aluminum, cadmium and selenium compounds as well as X--ray irradiation were studied. Cytogenetic indices were investigated for different doses of the above factors and peculiarities of their influence on the ratio of mitotic phases were analyzed. The increasing in the proportion of cells at the specific mitotic stage was revealed. There were anaphase stage for aluminum chloride, prophase stage for cadmium chloride, meta-- and anaphase stages for sodium selenate, and telophase stage for X--rays. Investigated chemical elements may be ranged according to their ability to induce the aberrant anaphase frequency in the row: Se (from 3.75В В·В 10вЂ“6 M) > Al (from 3.86В В·В 10вЂ“5 M) > Cd (from 8.44В В·В 10вЂ“5 M). Maximal experimental dose of X--ray irradiation (9.03В В·В 10вЂ“3 C/kg) induces the frequency of chromosome aberration similar to those induced by maximal experimental doses of aluminum and selenium (3.86В В·В 10вЂ“4 M and 8.34В В·В 10вЂ“6 M).}, } @ARTICLE{TsitGen94, author = {Berezovska, O., P. and Moroz, O., Yu. and Sidorenko, A., P.}, title = {[Intra- and Interspecies Differences in the ISSR-PCR Patterns of Bumble Bee (Hymenoptera : Bombinae)].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {28--35}, number = {3}, abstract = {Variation in the ISSR patterns was studied in queens of five species of bumble bee habitating on the territory of Ukraine and Belarus. Species--specific characteristics were obtained for B. sylvarum, B. lapidarius, B. pascuorum, B. terrestris, and B. hortorum with using (GTG)7A and (AGРЎ)6G as primers. Some ISSR markers were common for the groups of species. From 73 to 100В % ISSR markers were invariant within the species. Individual characteristics of B. terrestris from geographically distant populations from Kiev and Minsk Oblasts were similar. The level of intraspecific variation was different among the species. Taking into account intraspecific constancy of the major ISSR--PCR patterns and in the same time their susceptibility to individual differences we proposed these markers could be used to elucidate some complicated questions of bumble bee taxonomy.}, } @ARTICLE{TsitGen95, author = {Yanchukov, A., V. and Morozov-Leonov, S., Yu.}, title = {[Comparative Analysis of the Genetic Structure of Hybrid Populations of European Toads of the Genus Bombina (Oken, 1816) from Ukraine and Croatia].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {36--40}, number = {3}, abstract = {The comparative analysis of hybrid populations of toads Bombina bombina and B. variegata from Ukraine and Croatia revealed the essential differences in their genetic structure. The population composition and the direction of genetic introgression are determined initially by the ecological factors (the locality type, the country relief). The clear predominance of the red--bellied toad Bombina bombina was found in two cases: 1) in the lowland populations and 2) in the big samples. The second parental species, B. variegata, predominates in the highlands and in the small samples, respectively.}, } @ARTICLE{TsitGen96, author = {Lukash, L., L. and Lylo, V., V. and ManвЂ™ko, V., G. and Terentev, A., G.}, title = {[The Increasing Mutagenic Effect of Nitrosoguanidine under Influence of Modified Bases during Inhibition of Repair AGT Enzyme in Mammalian Somatic Cells in vitro].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {41--50}, number = {3}, abstract = {Gene mutations were studied on human cells SL68, XP12BE and chinese hamster cells Blld--ii--FAF28C1237. All the cells were sensitive to purine base analogs and were characterized by a high rate of O6--alkylguanine--DNA--transferase (AGT) activity. Inhibiting AGT activity by O6--benzylguanine considerably increases the frequency of mutants induced by the alkylating agent MNNG. Transitions of the GC→AT type are the dominant mutations in the coding region of the hprt gene. The mechanism of DNA lesion repair by the AGT enzyme differs significantly from the excision repair.}, } @ARTICLE{TsitGen97, author = {Tuganova, T., N. and Bolgova, L., S.}, title = {[Main Morphofunctional Types of Blast Cell Nucleoli in Non-Hodgkin`s Lymphomas and Benign Hyperplasia].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {51--57}, number = {3}, abstract = {Expression of main morphofunctional types of blast cell nucleoli in lymphomas and benign hyperplasia was compared in the cytological material of 38 patients for revealing additional differential cytological signs of malignant transformation of lymphoid cells. Cytogenetic criteria of malignant transformation of the blast population of lymphoid cells were determined.}, } @ARTICLE{TsitGen98, author = {Dmitriev, A.P.}, title = {[Signal Systems of Plant Immunity].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {58--68}, number = {3}, abstract = {Plants can recognise the penetrating pathogen and respond to the attack with an array of defense reactions. Signal transduction from receptor in plasma membrane to genome is necessary to activate these reactions. Plant cell signaling systems which take part in signal transduction were discovered and identified recently. The obtained results suggest that plant cells have complex and well coordinated signal network which regulates their immune potential.}, } @ARTICLE{TsitGen99, author = {Totskiy, V., N. and Khaustova, N., D. and Alshibli, N., M. and Sechnyak, A., L.}, title = {[Genetic and Biochemical Mechanisms of Ontogenetic and Phylogenetic Adaptation].}, journal = {Tsitol. Genet.}, year = {2002}, volume = {36}, pages = {69--75}, number = {3}, abstract = {Results of the scientific research of genetic mechanisms of ontogenetic and phylogenetic adaptation in the Department of Genetics and Molecular Biology of the Odessa National University (ONU) are summarized. The new concept of genetic adaptation and adaptive heterosis is proposed. The evidence are presented that not only selection of selectively valuable alleles of the structural genes of enzymes, but also of gene--modifiers of the gene products are involved in the adaptation of D. melanogaster populations to environmental conditions. As a result, the sets of coadaptation alleles вЂ“ adaptation complexes of genes (ACG), which are specific to the selective factors, are formed. in persons of the population.}, }