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珊瑚基因表达反应对低pH的复杂动态跨物种

Veronica Z Radice¹, Ana Martinez², Adina Paytan²

¹Department of Biological Sciences, Old Dominion University, Norfolk, Virginia, USA.

Molecular ecology

|October 31, 2023

概括

珊瑚基因表达揭示了海洋酸化的显著可塑性和适应潜力. 响应因物种和来源而异,突出了低pH值对珊瑚礁生态系统的复杂影响.

科学领域:

海洋生物学海洋生物学
生态生态学生态生态学
基因组学就是基因组学.

背景情况:

珊瑚礁面临海洋酸化的威胁,其特点是pH值下降.
墨西哥尤卡坦的低pH水下泉源提供了一个独特的自然实验室,用于研究珊瑚对酸性条件的反应.
之前的研究表明,在不同的pH环境中,珊瑚的生存率不同.

研究的目的:

在不同的pH条件下研究三种造礁珊瑚物种及其共生体的基因表达模式.
评估珊瑚的可塑性和适应能力,以应对低pH环境.
为了比较来自本地低pH和环境pH的珊瑚的基因表达特征,这些珊瑚被移植到常见的花园场所.

主要方法:

对珊瑚宿主 (Porites astreoides,Porites porites,Siderastrea siderea) 及其Symbiodiniaceae内生生物体的基因表达分析.
从低pH (Ojo) 和环境pH (Lagoon, Reef) 来源到常见的花园场所使用的珊瑚移植.
在不同的物种,起源和移植pH环境中比较基因表达特征.

主要成果:

移植的pH环境对 Porites 体和 Porites 体宿主和共生体的基因表达产生了重大影响.
来自低pH原点的Porites天体体表现出可塑性,当移动到环境pH时,其基因表达类似于来自环境的珊瑚.
在所有起源中观察到对低pH值的微妙但显著的基因表达变化,这表明了适应潜力.

结论:

珊瑚对低pH值的基因表达反应是特定于物种的,并受到原产地和移植环境的影响.
有证据表明,可塑性和适应机制使珊瑚能够应对变化的pH值.
了解这些分子反应对于预测珊瑚礁对海洋酸化的弹性至关重要.

关键词:

适应和适应的过程常见的花园移植移植珊瑚转录组 (coral transcriptome) 是一种转录组.基因表达的基因表达方式海洋酸化是指海洋的酸化.塑性的可塑性塑性

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