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N Servetto¹, M B Ruiz², M Martínez³

¹Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Ecosistemas Marinos Polares (ECOMARES-IDEA), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares (ECOMARES), Av. Vélez Sarsfield 299, X5000JJC Córdoba, Argentina.

The Science of the total environment

|August 26, 2023

概括

海洋酸化对南极物种的影响不同于预期. 非化虫显示出显著的基因表达变化,特别是在免疫和抗氧化剂反应中,挑战了关于脆弱性的假设.

科学领域:

海洋生物学海洋生物学
海洋学海洋学海洋学
生态生态学生态生态学
分子生物学分子生物学

背景情况:

南洋生物非常容易受到海洋酸化 (OA) 的影响,这是由于自然低和状态.
一般认为OA对化物种的影响比非化物种更严重.

研究的目的:

研究南极盆地物种对降低pH值条件的分子和酶反应.
为了比较OA对非化 (Cnemidocarpa verrucosa) 和化双 (Aequiyoldia eightsii) 的影响.

主要方法:

在66天的实验中,采用基因表达概况和酶活性测定.
两种pCO2处理 (环境和升高) 用于模拟OA条件.
分析的重点是差异表达的基因和关键的代谢途径.

主要成果:

的C. verrucosa表现出显著的基因表达变化,其中224个基因上调和111个基因下调,包括免疫和抗氧化剂反应基因.
双A. eightsii的变化较少,34个基因上调和69个基因下调,包括氧化还原酶通路的下调和热冲击蛋白的上调70.
与一般假设相反,非化呈现出比化双更明显的分子对OA的反应.

结论:

海洋酸化在分子层面上显著影响非化南极物种,如 ascidians.
这些发现挑战了普遍的观点,即OA对化生物有不成比例的影响.
需要进一步的研究,以了解对南大洋中丰富的非化物种的生态影响.

关键词:

酸性化酸性化是指酸性化.化物种是一种化物种.非化物种没有化.南大洋南大洋是南大洋.

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