Diversity, distribution, and significance of transposable elements in the genome of the only selfing hermaphroditic vertebrate Kryptolebias marmoratus.
Diversity, distribution, and significance of transposable elements in the genome of the only selfing hermaphroditic vertebrate Kryptolebias marmoratus.
复制标题
唯一自我自我雌雄同体的脊椎动物Kryptolebias Marmoratus的基因组中可转座元素的多样性，分布和意义。
DOI：
10.1038/srep40121
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发表时间：
2017-01-10
影响因子：
4.6
通讯作者：
Lee JS
中科院分区：
文献类型：
--
作者：
Rhee JS;Choi BS;Kim J;Kim BM;Lee YM;Kim IC;Kanamori A;Choi IY;Schartl M;Lee JS
Kryptolebias marmoratus是独一无二的，因为它是迄今为止已知的唯一一种自我繁殖的雌雄同体脊椎动物。它主要通过混合卵巢/睾丸性腺内的内部自受精繁殖。在这里，我们报告了一个高质量的基因组组装的K。marmoratus韩国（SK）菌株，突出了转座因子（TE）的多样性和分布。我们发现K。marmoratus基因组维持TE的数量和组成。这可能是一个重要的基因组属性，促进基因组重组，在这个自交鱼，而除了混合交配策略，它也可能是一种机制，有助于进化适应生态压力的物种。未来的工作应该有助于澄清这一点，一旦基因组信息收集的家庭Rivulidae不自花受精的其他类群。我们提供了一个有价值的基因组资源，突出了TE对具有不寻常生命周期的鱼类基因组进化的潜在影响。
The Kryptolebias marmoratus is unique because it is the only self-fertilizing hermaphroditic vertebrate, known to date. It primarily reproduces by internal self-fertilization in a mixed ovary/testis gonad. Here, we report on a high-quality genome assembly for the K. marmoratus South Korea (SK) strain highlighting the diversity and distribution of transposable elements (TEs). We find that K. marmoratus genome maintains number and composition of TEs. This can be an important genomic attribute promoting genome recombination in this selfing fish, while, in addition to a mixed mating strategy, it may also represent a mechanism contributing to the evolutionary adaptation to ecological pressure of the species. Future work should help clarify this point further once genomic information is gathered for other taxa of the family Rivulidae that do not self-fertilize. We provide a valuable genome resource that highlights the potential impact of TEs on the genome evolution of a fish species with an uncommon life cycle.