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首页> 外文期刊>Marine biology >Variations in cardiac performance and heat shock protein expression to thermal stress in two differently zoned limpets on a tropical rocky shore
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Variations in cardiac performance and heat shock protein expression to thermal stress in two differently zoned limpets on a tropical rocky shore

机译：热带多岩石海岸上两个不同区域的贝类的心脏性能和热休克蛋白表达对热应激的变化

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摘要

Understanding variation in physiological adaptations to thermal stress is vital when investigating intertidal species' distribution patterns. The thermal sensitivities of two limpets, Cellana grata and C. toreuma, differed in accordance with their vertical distributions. Cardiac performance was maintained at higher temperatures (~47℃) for the high-zone C. grata than the mid-zone C. toreuma (~ 42℃). At 40℃, C. grata maintained regular heart function for ~4 h, while heart function of C. toreuma decreased rapidly. Heat shock protein expression revealed that C. toreuma had two constitutive iso-forms, Hsp77 and Hsp72, and C. grata one inducible form, Hsp75, which was upregulated at 40℃, suggesting C. grata has a more effective heat shock response than C. toreuma. The temperature-adaptive differences in cardiac thermal tolerance and Hsp expression match observed differences in thermally induced mortalities with the onset of summer and may help predict differential effects of climate change on the two congeners.
机译：在调查潮间带物种的分布模式时，了解对热应力的生理适应变化至关重要。两个帽贝，Cellana grata和C. toreuma的热敏性根据其垂直分布而不同。在较高温度（〜47℃）下，高区玉米棒菌的心脏性能要比在中区（最低）C。toreuma（〜42℃）更高。在40℃下，格拉茨梭菌维持正常的心功能约4小时，而toreuma的心功能迅速下降。热休克蛋白的表达表明，toreuma弯曲杆菌有两个组成型Hsp77和Hsp72，H.grata的一种诱导型Hsp75在40℃时被上调，这表明C. grata具有比C.更有效的热激反应。 。toreuma。夏季开始时，心脏热耐受性和Hsp表达的温度适应差异与观察到的热致死亡率差异相匹配，可能有助于预测气候变化对这两个同类物的不同影响。

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    《Marine biology》 |2011年第6期|p.1223-1231|共9页
  • 作者

    Yun-wei Dong; Gray A. Williams;

  • 作者单位

    The State Key Laboratory of Marine Environmental Science,College of Oceanography and Environmental Science,Xiamen University, Xiamen 361005,People's Republic of China;

    The Swire Institute of Marine Science and Division of Ecology & Biodiversity, School of Biological Sciences,The University of Hong Kong, Hong Kong SAR,People's Republic of China;

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