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首页> 外文期刊>BMC Genomics >Evidence for a Robertsonian fusion in Solea senegalensis (Kaup, 1858) revealed by zoo-FISH and comparative genome analysis
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Evidence for a Robertsonian fusion in Solea senegalensis (Kaup, 1858) revealed by zoo-FISH and comparative genome analysis

机译：由动物园 - 鱼类和比较基因组分析揭示了索尔塞内加伦斯（Kaup，1858）的罗伯逊融合的证据

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Solea senegalensis (Kaup, 1858) is a commercially important flatfish species, belonging to the Pleuronectiformes order. The taxonomy of this group has long been controversial, and the karyotype of the order presents a high degree of variability in diploid number, derived from chromosomal rearrangements such as Robertsonian fusions. Previously it has been proposed that the large metacentric chromosome of S. senegalensis arises from this kind of chromosome rearrangement and that this is a proto-sex chromosome. In this work, the Robertsonian origin of the large metacentric chromosome of S. senegalensis has been tested by the Zoo-FISH technique applied to two species of the Soleidae family (Dicologlossa cuneata and Dagetichthys lusitanica), and by comparative genome analysis with Cynoglossus semilaevis. From the karyotypic analysis we were able to determine a chromosome complement comprising 2n?=?50 (FN?=?54) in D. cuneata and 2n?=?42 (FN?=?50) in D. lusitanica. The large metacentric painting probe gave consistent signals in four acrocentric chromosomes of the two Soleidae species; and the genome analysis proved a common origin with four chromosome pairs of C. semilaevis. As a result of the genomic analysis, up to 61 genes were annotated within the thirteen Bacterial Artificial Chromosome clones analysed. These results confirm that the large metacentric chromosome of S. senegalensis originated from a Robertsonian fusion and provide new data about the chromosome evolution of S. senegalensis in particular, and of Pleuronectiformes in general.
机译：SOLEA SENEGALENSIS（Kaup，1858）是一种商业上重要的扁平鱼类，属于胸腔切除型秩序。该组的分类学长期存在争议，并且该命令的核型在二倍体中呈现出高度的可变性，从罗伯逊融合等染色体重排。以前，已经提出了S. Senegalensis的大型核心染色体产生这种染色体重新排列，这是一种原始性染色体。在这项工作中，S.Senegalensis的大型核心染色体的罗伯逊来源已经被动物鱼类技术应用于两种Soleidae家族（Dicologlossa Cuneata和Dagetichthys Lusitanica），以及与Cynoglossus Semilaevis的比较基因组分析。从核型分析中，我们能够在D.Cuneata和2N中确定包含2N的染色体补充剂，其中D.·锡豆群和2N？42（Fn？=Δ54）。大型型涂料探针在两个SOLEIDAE物种的四种染色体中产生了一致的信号;并且基因组分析证明了具有四种染色体对C. Semilaevis的常见起源。由于基因组分析，高达61个基因在分析的十三个细菌人工染色体克隆内注释。这些结果证实，S.Senegalensis的大型偏心染色体源自罗伯逊融合，并特别提供了关于S.塞内加伦斯的染色体演进的新数据，以及一般的胸膜肠癌。

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