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The correct course of this process is often disrupted in case of remote hybridization, which is a stress factor. The combination of parental genomes of different species in a hybrid cell leads to a \u201cgenomic shock\u201d followed by loss of genes, changes in gene expression, deletions, inversions, and translocations of chromosome regions. The created rye-wheat allopolyploid hybrids, which were collectively called secalotriticum, represent a new interesting model for studying the effect of remote hybridization on the centromere and its components. The main feature of an active centromere is the presence of a specific histone H3 modification in the centromeric nucleosomes, which is referred to as CENH3 in plants. In this paper the results of cytogenetic analysis of the secalotriticum hybrid karyotypes and the comparison of the CENH3 N-terminal domain structure of parent and hybrid forms are presented. It is shown that the karyotypes of the created secalotriticum forms are stable balanced hexaploids not containing minichromosomes with deleted arms, in full or in part. A high level of homology between rye and wheat enables to express both parental forms of<jats:italic>CENH3<\/jats:italic>gene in the hybrid genomes of secalotriticum cultivars. The CENH3 structure in hybrids in each crossing combination has some specific features. The percentage of polymorphisms at several amino acid positions is much higher in one of the secalotriticum hybrids, STr VD, than in parental forms, whereas the other hybrid, STr VM, inherits a high level of amino acid substitutions at the position 25 from the maternal parent.<\/jats:p>","DOI":"10.1155\/2018\/2097845","type":"journal-article","created":{"date-parts":[[2018,11,26]],"date-time":"2018-11-26T23:30:27Z","timestamp":1543275027000},"page":"1-6","source":"Crossref","is-referenced-by-count":3,"title":["Dynamics of the Centromeric Histone CENH3 Structure in Rye-Wheat Amphidiploids (Secalotriticum)"],"prefix":"10.1155","volume":"2018","author":[{"given":"Yulia A.","family":"Lipikhina","sequence":"first","affiliation":[{"name":"Institute of Molecular and Cellular Biology SB RAS, Novosibirsk 630090, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elena V.","family":"Evtushenko","sequence":"additional","affiliation":[{"name":"Institute of Molecular and 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