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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Seasonal patterns of metabolism and the heat shock response (HSR) in farmed mussels Mytilus galloprovincialis
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Seasonal patterns of metabolism and the heat shock response (HSR) in farmed mussels Mytilus galloprovincialis

机译：养殖贻贝Mytilus galloprovincialis的代谢和热休克反应（HSR）的季节性模式

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摘要

Mussels (Mytilus galloprovincialis) are the main bivalves cultured in the Mediterranean Sea and in the Thermaikos gulf North of Greece. Global warming might affect these cultures since increases in the sea temperatures especially during summertime and may cause mass mortalities. Thus projections of the effects of global warming and the knowledge of the mechanisms of thermal limitation and adaptation are considered important in this context. In the present work we studied the seasonal expression of Hsp70 and Hsp90 of aquacultured mussels in nature in an effort to examine whether mussels are seasonally thermally stressed. Moreover we determined the activity of the key glycolytic enzyme PK in order to examine seasonal changes in the metabolic profile. The present data showed a biphasic seasonal pattern in the expression of Hsps in the mantle and PAM of M. galloprovincialis. The expression of inducible Hsp72 and Hsp90 increased between February and mid April, and remained constant or decreased slightly by the end of May. Hsps expression started again in early June leading to a gradual increase by mid July and remained by the end of August. The pattern of the HSR indicates increased protein turnover or protein damage in the tissues of aquacultured M. galloprovincialis between winter and summer seasons. The induction temperature is probably limited, and beyond some upper limits there is no further change in the HSR induction temperatures and the HSR sets in. PK activity in the mantle was significantly higher in winter than in spring. Early May saw a reactivation of PK to higher than spring values. Similar to mantle PK, PK activity in PAM was significantly higher in winter than in spring. A slight reactivation was observed by the end of August.
机译：贻贝（Mytilus galloprovincialis）是在地中海和希腊北部Thermaikos海湾养殖的主要双壳类动物。全球变暖可能会影响这些文化，因为海水温度升高，尤其是在夏季，并且可能导致大规模死亡。因此，在这种情况下，对全球变暖影响的预测以及对热限制和适应机制的认识被认为是重要的。在当前的工作中，我们研究了自然界中水产养殖贻贝的Hsp70和Hsp90的季节性表达，以研究贻贝是否受到季节性热胁迫。此外，我们确定了关键糖酵解酶PK的活性，以检查代谢谱中的季节性变化。目前的数据显示了盖洛省分枝杆菌的地幔和PAM中Hsps表达的双相季节性模式。诱导型Hsp72和Hsp90的表达在2月至4月中旬之间增加，并且在5月底之前保持恒定或略有下降。 Hsps的表达在6月初再次开始，到7月中旬逐渐增加，到8月底一直保持这种状态。 HSR的模式表明在冬季和夏季之间，水产养殖的墨西哥支原体的组织中蛋白质更新或蛋白质损伤增加。感应温度可能是有限的，并且超出一些上限，高铁的感应温度没有进一步的变化，高铁开始发生。地幔中的PK活性在冬季明显高于春季。 5月初，PK重新激活至高于春季值。与地幔PK相似，冬季PAM中的PK活性明显高于春季。到八月底，观察到轻微的激活。

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    Sotiria Ioannou; Andreas Anestis; Hans O. Poertner; Basile Michaelidis;

  • 作者单位

    Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessalonild, Thessaloniki 54124, Greece;

    Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessalonild, Thessaloniki 54124, Greece;

    Alfred-Wegener-lnstitutfur Polar-und Meeresforschung, Okophysiologie mariner Tiere, Postfach 120161, D-27515 Bremerhaven, Germany;

    Laboratory of Animal Physiology, Department of Zoology, School of Biology, Faculty of Science, Aristotle University of Thessalonild, Thessaloniki 54124, Greece;

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  • 关键词

    HSR; metabolism; mussels; mytilus galloprovincialis; seasonal stress responses;

    机译：高铁;代谢;青口贝;鸡没食子体季节性压力反应;

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