Publications by authors named "Mikolaj Kazmierczak"
Article Synopsis
- Hybridogenesis is a reproductive strategy seen in certain frog hybrids where one genome is eliminated from gonocytes but preserved in adult spermatogonial stem cells.
- The study examined testis morphology and chromosome composition in these frogs to better understand how genome elimination occurs at different stages of spermatogenesis.
- Findings revealed that while some cells successfully complete genome elimination, a significant portion fails, resulting in a high degree of abnormal sperm cells and indicating that hybridogenesis is an inefficient reproductive process.
An intriguing outcome of hybridisation is the emergence of clonally and hemiclonally reproducing hybrids, that can sustain, reproduce, and lead to the emergence of polyploid forms. However, the maintenance of diploid and polyploid hybrid complexes in natural populations remains unresolved. We selected water frogs from the Pelophylax esculentus complex to study how diploid and triploid hybrids, which reproduce hemiclonally via hybridogenesis, are maintained in natural populations.
View Article and Find Full Text PDFDNA elimination is a radical form of gene silencing and occurs both in somatic and germ cells. The programmed DNA elimination occurs during gametogenesis in interspecies hybrids that reproduce by hybridogenesis (stick insects, fishes, and amphibians) and concerns removal of whole genomes of one of the parental species and production of clonal gametes propagating the genome of the other species. The cellular mechanisms differ considerably in hybridogenetic insects and fishes but remains unknown in edible frogs Pelophylax esculentus, natural hybrids between Pelophylax lessonae and Pelophylax ridibundus.
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