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Article

Hybridogenesis in the Water Frogs from Western Russian Territory: Intrapopulation Variation in Genome Elimination

1
Amphibian Research Center, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
2
Institute of Applied Ecology, University of Canberra, Canberra 2601, Australia
3
Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620026, Russia
4
Institute of Plant and Animal Ecology, Russian Academy of Sciences, Ural Division, 620144 Ekaterinburg, Russia
5
Institute of Biology and Biomedicine, Lobachevsky State University, 603950 Nizhny Novgorod, Russia
6
School of Science, Kitasato University, Sagamihara 252-0373, Japan
*
Authors to whom correspondence should be addressed.
Academic Editors: Taras K. Oleksyk, Aleksey Komissarov and Fabia U. Battistuzzi
Genes 2021, 12(2), 244; https://doi.org/10.3390/genes12020244
Received: 27 November 2020 / Revised: 26 January 2021 / Accepted: 1 February 2021 / Published: 8 February 2021
(This article belongs to the Special Issue Genome Diversity of Adaptation and Speciation)
Hybridogenesis in an interspecific hybrid frog is a coupling mechanism in the gametogenic cell line that eliminates the genome of one parental species with endoduplication of the remaining genome of the other parental species. It has been intensively investigated in the edible frog Pelophylax kl. esculentus (RL), a natural hybrid between the marsh frog P. ridibundus (RR) and the pool frog P. lessonae (LL). However, the genetic mechanisms involved remain unclear. Here, we investigated the water frogs in the western Russian territory. In three of the four populations, we genetically identified 16 RL frogs living sympatrically with the parental LL species, or with both parental species. In addition, two populations contained genome introgression with another species, P. bedriagae (BB) (a close relative of RR). In the gonads of 13 RL frogs, the L genome was eliminated, producing gametes of R (or R combined with the B genome). In sharp contrast, one RL male eliminated the L or R genome, producing both R and L sperm. We detected a variation in genome elimination within a population. Based on the genetic backgrounds of RL frogs, we hypothesize that the introgression of the B genome resulted in the change in choosing a genome to be eliminated. View Full-Text
Keywords: Pelopylax kl. esculentus; genome introgression; cytochrome b; Serum albumin Pelopylax kl. esculentus; genome introgression; cytochrome b; Serum albumin
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MDPI and ACS Style

Miura, I.; Vershinin, V.; Vershinina, S.; Lebedinskii, A.; Trofimov, A.; Sitnikov, I.; Ito, M. Hybridogenesis in the Water Frogs from Western Russian Territory: Intrapopulation Variation in Genome Elimination. Genes 2021, 12, 244. https://doi.org/10.3390/genes12020244

AMA Style

Miura I, Vershinin V, Vershinina S, Lebedinskii A, Trofimov A, Sitnikov I, Ito M. Hybridogenesis in the Water Frogs from Western Russian Territory: Intrapopulation Variation in Genome Elimination. Genes. 2021; 12(2):244. https://doi.org/10.3390/genes12020244

Chicago/Turabian Style

Miura, Ikuo; Vershinin, Vladimir; Vershinina, Svetlana; Lebedinskii, Andrei; Trofimov, Alexander; Sitnikov, Ivan; Ito, Michihiko. 2021. "Hybridogenesis in the Water Frogs from Western Russian Territory: Intrapopulation Variation in Genome Elimination" Genes 12, no. 2: 244. https://doi.org/10.3390/genes12020244

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