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首页> 外文期刊>Genes & Genomics >Tissue specific haemoglobin gene expression suggests adaptation to local marine conditions in North Sea flounder (Platichthys flesus L.)
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Tissue specific haemoglobin gene expression suggests adaptation to local marine conditions in North Sea flounder (Platichthys flesus L.)

机译：组织特异性血红蛋白基因表达表明适应北海比目鱼（Platichthys flesus L.）的当地海洋条件

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摘要

Recent genetic analyses of candidate genes and gene expression in marine fishes have provided evidence of local adaptation in response to environmental differences, despite the lack of strong signals of population structure from conventional neutral genetic markers. In this study expression of the haemoglobin alpha and beta subunit genes was studied in reciprocally transplanted European flounder Platichthys flesus from the highly saline North Sea and the brackish Baltic Sea. Clear differences in expression patterns of haemoglobin alpha and beta subunit genes were found among different types of tissue in flounder. In gill tissue a plastic response to salinity treatments was observed with general up-regulation of these genes concomitant with higher salinity. For liver tissue a population specific expression differences was observed with lower expression at simulated non-native compared to native salinities. Finally, for kidney tissue a stress response was observed in one population, with gene up-regulation when North Sea flounders were transplanted to low salinity. This study underlines the importance of tissue specific gene expression and the significance of gene expression for evolution of local adaptation in high gene flow marine fishes.
机译：尽管缺乏来自常规中性遗传标记的种群结构的强烈信号，但最近对海洋鱼类候选基因和基因表达的遗传分析提供了对环境差异做出局部适应的证据。在这项研究中，研究了在高盐度北海和咸淡的波罗的海相互移植的欧洲比目鱼Plateththys flesus中血红蛋白α和β亚基基因的表达。在比目鱼的不同类型组织之间发现了血红蛋白α和β亚基基因表达模式的明显差异。在g组织中，观察到对盐度处理的可塑性反应，这些基因的总体上调伴随着更高的盐度。对于肝脏组织，观察到群体特异性表达差异，与天然盐度相比，在模拟的非天然条件下表达较低。最后，对于肾脏组织，在一个种群中观察到了应激反应，当将北海比目鱼移植到低盐度时基因上调。这项研究强调了组织特异性基因表达的重要性，以及基因表达对于高基因流海鱼局部适应进化的重要性。

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