Hybridogenesis in the Water Frogs from Western Russian Territory: Intrapopulation Variation in Genome Elimination.
Hybridogenesis in the Water Frogs from Western Russian Territory: Intrapopulation Variation in Genome Elimination.
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DOI：
10.3390/genes12020244
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发表时间：
2021-02-08
期刊：
影响因子：
3.5
通讯作者：
Ito M
中科院分区：
文献类型：
--
作者：
Miura I;Vershinin V;Vershinina S;Lebedinskii A;Trofimov A;Sitnikov I;Ito M
种间杂交蛙的杂交发生是配子发生细胞系中的一种偶联机制，其消除一个亲本物种的基因组，而另一个亲本物种的剩余基因组进行内复制。在食用蛙Pelophylax kl. Esculentus（RL）是沼泽蛙P. ridibundus（RR）和池蛙P. lessonae（LL）的天然杂交种。然而，涉及的遗传机制仍不清楚。在这里，我们调查了俄罗斯西部地区的水蛙。在四个种群中的三个，我们从遗传学上确定了16个RL青蛙与父母的LL物种，或与父母的物种同域生活。此外，两个群体含有与另一个物种，P. bedriagae（BB）（RR的近亲）的基因组渐渗。在13只RL青蛙的性腺中，L基因组被消除，产生R（或R与B基因组结合）的配子。与此形成鲜明对比的是，一个RL男性消除了L或R基因组，产生R和L精子。我们检测到一个种群内基因组消除的变异。基于RL蛙的遗传背景，我们假设B基因组的渐渗导致了选择被淘汰的基因组的变化。
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.
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影响因子：
4.6
作者：
Chmielewska M;Dedukh D;Haczkiewicz K;Rozenblut-Kościsty B;Kaźmierczak M;Kolenda K;Serwa E;Pietras-Lebioda A;Krasikova A;Ogielska M
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Quilodran, Claudio S.;Currat, Mathias;Montoya-Burgos, Juan I.
通讯作者：
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