Cytological maps of lampbrush chromosomes of European water frogs (Pelophylax esculentus complex) from the Eastern Ukraine

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dc.contributor.authorDedukh, D.
dc.contributor.authorMazepa, G.
dc.contributor.authorShabanov, D.
dc.contributor.authorRosanov, Ju.
dc.contributor.authorLitvinchuk, S.
dc.contributor.authorBorkin, L.
dc.contributor.authorSaifitdinova, A.
dc.contributor.authorKrasikova, A.
dc.date.accessioned2014-11-24T21:16:53Z
dc.date.available2014-11-24T21:16:53Z
dc.date.issued2013
dc.description.abstractHybridogenesis (hemiclonal inheritance) is a kind of clonal reproduction in which hybrids between parental species are reproduced by crossing with one of the parental species. European water frogs (Pelophylax esculentus complex) represent an appropriate model for studying interspecies hybridization, processes of hemiclonal inheritance and polyploidization. P. esculentus complex consists of two parental species, P. ridibundus (the lake frog) and P. lessonae (the pool frog), and their hybridogenetic hybrid – P. esculentus (the edible frog). Parental and hybrid frogs can reproduce syntopically and form hemiclonal population systems. For studying mechanisms underlying the maintenance of water frog population systems it is required to characterize the karyotypes transmitted in gametes of parental and different hybrid animals of both sexes. In order to obtain an instrument for characterization of oocyte karyotypes in hybrid female frogs, we constructed cytological maps of lampbrush chromosomes from oocytes of both parental species originating in Eastern Ukraine. We further identified certain molecular components of chromosomal marker structures and mapped coilin-rich spheres and granules, chromosome associated nucleoli and special loops accumulating splicing factors. We recorded the dissimilarities between P. ridibundus and P. lessonae lampbrush chromosomes in the length of orthologous chromosomes, number and location of marker structures and interstitial (TTAGGG) n–repeat sites as well as activity of nucleolus organizer. Satellite repeat RrS1 was mapped in centromere regions of lampbrush chromosomes of the both species. Additionally, we discovered transcripts of RrS1 repeat in oocytes of P. ridibundus and P. lessonae. Moreover, G-rich transcripts of telomere repeat were revealed in association with terminal regions of P. ridibundus and P. lessonae lampbrush chromosomes.ru_RU
dc.identifier.citationBMC Genetics 2013, 14:26, http://www.biomedcentral.com/1471-2156/14/26.ru_RU
dc.identifier.urihttps://ekhnuir.karazin.ua/handle/123456789/10105
dc.language.isoen_USru_RU
dc.publisherBMC Geneticsru_RU
dc.subjectCentromereru_RU
dc.subjectChromosomeru_RU
dc.subjectEuropean water frogru_RU
dc.subjectHybridizationru_RU
dc.subjectKaryotyperu_RU
dc.subjectNon-coding RNAru_RU
dc.subjectNuclear bodyru_RU
dc.subjectOocyteru_RU
dc.subjectTelomereru_RU
dc.titleCytological maps of lampbrush chromosomes of European water frogs (Pelophylax esculentus complex) from the Eastern Ukraineru_RU
dc.typeArticleru_RU

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Батрахологія