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软体动物中基合成酶的演变及其对海洋酸化的反应

Maoxiao Peng¹, João C R Cardoso¹, Deborah M Power²

¹Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.

Molecular phylogenetics and evolution

|September 10, 2024

概括

双动物已经扩展了奇合成酶 (CHS) 基因,揭示了对形成和生物功能至关重要的多种异型. 它们的进化表明它们适应了海洋酸化等环境变化.

科学领域:

* * 海洋生物学海洋生物学
* 进化生物学进化生物学
* 生物化学 * 生物化学

背景情况:

*氨酸合成酶 (CHS) 在真核生物中至关重要,由于海洋酸化问题,软体动物生物矿化是关键的研究领域.
*对软体动物CHS的基因组洞察,包括异形进化,组织分布和环境反应,仍然在很大程度上未被探索.

研究的目的:

* 调查软体动物中奇丁合成酶 (CHS) 基因的进化史和功能多样化.
*分析CHS异形分布,结构和双体表达模式.
* 评估CHS异型体对海洋酸化的物种特异反应.

主要方法:

* 跨软体动物类的CHS基因的比较基因组学和系遗传学分析.
*转录组分析以确定不同组织中的CHS异型表达.
* 在海洋酸化条件下检查CHS基因表达.

主要成果:

*双动物表现出扩大的CHS基因 (12-22),在真核生物中已知最高的数量.
* 进化分析表明有四种祖先的CHS II型异型 (A-D),随后发生分化和异型丧失.
*观察到CHS异型的特定物种组织表达和功能多样化,其中一些缺乏形成的域.
*海洋酸化以特定物种的方式影响CHS表达,在Mytilus物种中,一些异构体的下调.

结论:

*双动物中CHS基因的扩张和多样化表明,基除了外生物矿物化之外,还参与了多种生物功能.
* CHS异型表现出多样化的结构和组织分布,反映出进化适应.
*研究结果为了解软体动物中CHS功能和对环境压力因素的反应提供了基础.

关键词:

生物矿物化生物矿物化基合成酶的演变软体动物软体动物海洋酸化是指海洋的酸化.特定物种的功能多样化.

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