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首页> 外文期刊>Marine biology >Cycles of heat and aerial-exposure induce changes in the transcriptome related to cell regulation and metabolism in Mytilus californianus
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Cycles of heat and aerial-exposure induce changes in the transcriptome related to cell regulation and metabolism in Mytilus californianus

机译：热量和空中暴露循环诱导米利斯加州米利斯细胞调节和代谢相关的转录组的变化

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摘要

The intertidal musselMytilus californianusis subjected to thermal and oxygen cycles due to fluctuations of the tidal cycle. Mussels that reside in high-shore microenvironments experience extended periods of aerial-exposure and greater thermal challenges than low-shore populations. In this study, we investigated the combined effect of daily extended periods of aerial-exposure and midday thermal events on the physiology of mussels by monitoring transcriptome-wide gene expression in a simulated tidal environment. Mussels were acclimated to aerial-exposure for 20 h a day combined with a simulated midday solar heating event of + 8 degrees C. Results revealed that 11% of the transcriptome exhibited robust patterns of rhythmic gene expression. Two broad sets of genes were induced, including one that was upregulated during the daytime thermal stress period and another following the 4-h evening high-tide. The daytime thermal stress associated gene set was enriched for genes related to cellular regulatory pathways such as those that encode transcription factors while genes expressed following evening submergence varied in functional theme. Additionally, genes related to energy metabolism were also upregulated during warming periods of the tidal cycle. Comparing these data to published data from a previous tidal simulation study revealed that acclimation to daily heat stress yielded a muted transcriptional response to heat compared to an acute response observed in mussels maintained under isothermal conditions. These results indicate thatM. californianusdisplays phenotypic plasticity with respect to transcriptomic expression and that this trait likely promotes homeostasis in the intertidal environment.
机译：由于潮汐循环的波动，Intertival Musselmytilus Californianusis受到热和氧循环。在高岸微环境中居住的贻贝经历了延长的空中曝光时间和比低岸上人口更大的热挑战。在这项研究中，我们通过监测模拟潮汐环境中的转录组宽基因表达，调查了每日延长的空中延长和午间热事件的综合影响。贻贝适应了每天20小时的空中暴露，结合了+ 8℃的模拟午和太阳能加热事件。结果表明，11％的转录组表现出稳健的节奏基因表达模式。诱导两组广泛的基因，包括在白天热应力期间上调的一组基因，并在4-H晚期高潮之后另一个。白天热应激相关基因集被富集与细胞调节途径相关的基因，例如编码转录因子的那些，而在秋季淹没后的基因在功能主题中变化。另外，在潮热周期的升温期间也上调了与能量代谢相关的基因。将这些数据与先前的潮汐模拟研究的公布数据进行比较显示，与在等温条件下的贻贝中观察到的急性反应相比，对日常热应激的适应性对热量进行了柔软的转录反应。这些结果表明了。加利福尼亚州的表型可塑性相对于转录组表达，并且这种特性可能促进跨透明环境中的稳态。

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  • 来源
    《Marine biology》 |2020年第9期|132.1-132.12|共12页
  • 作者

    Connor Kwasi; Gracey Andrew Y.;

  • 作者单位

    Univ Calif Irvine Dept Ecol & Evolutionary Biol Irvine CA 92697 USA;

    Univ Southern Calif Dept Biol Los Angeles CA 90089 USA;

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  • 正文语种 eng
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