Optional endoreplication and selective elimination of parental genomes during oogenesis in diploid and triploid hybrid european water frogs

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dc.contributor.authorDedukh, D.
dc.contributor.authorLitvinchuk, S.
dc.contributor.authorRosanov, Ju.
dc.contributor.authorMazepa, G.
dc.contributor.authorSaifitdinova, A.
dc.contributor.authorShabanov, D.
dc.contributor.authorKrasikova, A.
dc.date.accessioned2015-12-22T14:14:58Z
dc.date.available2015-12-22T14:14:58Z
dc.date.issued2015
dc.description.abstractIncompatibilities between parental genomes decrease viability of interspecific hybrids; however, deviations from canonical gametogenesis such as genome endoreplication and elimination can rescue hybrid organisms. To evaluate frequency and regularity of genome elimination and endoreplication during gametogenesis in hybrid animals with different ploidy, we examined genome composition in oocytes of di- and triploid hybrid frogs of the Pelophylax esculentus complex. Obtained results allowed us to suggest that during oogenesis the endoreplication involves all genomes occurring before the selective genome elimination. We accepted the hypothesis that only elimination of one copied genome occurs premeiotically in most of triploid hybrid females. At the same time, we rejected the hypothesis stating that the genome of parental species hybrid frogs co-exist with is always eliminated during oogenesis in diploid hybrids. Diploid hybrid frogs demonstrate an enlarged frequency of deviations in oogenesis comparatively to triploid hybrids. Typical for hybrid frogs deviations in gametogenesis increase variability of produced gametes and provide a mechanism for appearance of different forms of hybrids.ru_RU
dc.identifier.citationPLoS ONE, 2015 10(4): e0123304. doi:10.1371/journal.pone.0123304ru_RU
dc.identifier.urihttps://ekhnuir.karazin.ua/handle/123456789/11077
dc.language.isoenru_RU
dc.publisherPLoS ONEru_RU
dc.subjectPelophylax esculentus complexru_RU
dc.titleOptional endoreplication and selective elimination of parental genomes during oogenesis in diploid and triploid hybrid european water frogsru_RU
dc.typeArticleru_RU

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Батрахологія