成人珊瑚中热进化的微藻共生体的水平传播

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Updated: Sep 13, 2025

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Physiological Characterization of the Coral Holobiont Using a New Micro-Respirometry Tool

Published on: April 28, 2023

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Bede G Johnston^1,2, Matthew R Nitschke^1,3, Wing Yan Chan^1,4

¹Australian Institute of Marine Science, Townsville, QLD, Australia.

The ISME journal

|July 30, 2025

概括

热进化的共生体可以被珊瑚驱逐出去,并被漂白珊瑚获得,提供了一种自然方法来增强珊瑚的热弹性. 这一发现有助于扩大应对气候变化对珊瑚礁影响的干预措施.

科学领域:

海洋生物学海洋生物学
珊瑚礁生态珊瑚礁生态
适应气候变化适应气候变化

背景情况:

传统的珊瑚礁恢复与气候变化导致的海水温度上升作斗争.
经过实验,热进化的藻类共生体增强了珊瑚的耐热性,但面临着可扩展性的挑战.
珊瑚共生体驱逐可能为升级干预提供一种被动传播途径.

研究的目的:

在Galaxea fascicularis中研究热进化的共生体 (Cladocopium proliferum菌株SS8) 的驱逐和水平传播.
评估热进化珊瑚全生物体驱逐的共生体的生存能力和传播动态.
确定是否可以通过漂白成年珊瑚获得被驱逐的共生体,以提高热弹性.

主要方法:

评估了G. fascicularis殖民地SS8的24小时共生体驱逐动力学.
分析了被驱逐的共生动物社区的SS8存在,形态和生理指标.
进行了一项赛道实验,通过暴露在SS8驱逐捐助者的漂白G. fascicularis碎片来测试共生体的获取.

主要成果:

热进化的共生菌株SS8在所有测试的珊瑚殖民地被驱逐的共生群体中被检测到.
被驱逐的共生体显示了线粒体指数和光化学效率的峰,大多数看起来完好无损.
在55天后,11.1%的漂白的接受者珊瑚碎片中,在低水平 (≤0.06%) 获得了排放的SS8.

结论:

可行的,热进化的共生体被珊瑚驱逐出来,可以被漂白的成年珊瑚获得.
这种驱逐和获取机制为扩大珊瑚热弹性干预提供了潜在的自然途径.
这些发现支持一种新的,被动的方法来提高珊瑚的热耐受性,以应对气候变化.

关键词:

珊瑚的漂白珊瑚的漂白珊瑚礁的恢复珊瑚礁的恢复实验进化的实验进化.横向传输水平传输的情况交生体驱逐驱逐交生体驱逐耐热性耐热性耐热性

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