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Microbial consortia increase thermal tolerance of corals

机译:微生物群落增加了珊瑚的耐热性

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摘要

This study examined the response of a coral holobiont to thermal stress when the bacterial community was treated with antibiotics. Colonies of Pocillopora damicornis were exposed to broad and narrow-spectrum antibiotics targeting coral-associated a and y-Proteobacte-ria. Corals were gradually heated from the control temperature of 26 to 31 ℃, and measurements were made of host, zooxanthellar and microbial condition. Antibiotics artificially reduced the abundance and activity of bacteria, but had minimal effect on zooxanthellae photosynthetic efficiency or host tissue protein content. Heated corals without antibiotics showed significant declines in F_VIF_M, typical of thermal stress. However, heated corals treated with antibiotics showed severe tissue loss in addition to a decline in F_V/ F_M. This study demonstrated that a disruption to the microbial consortium diminished the resilience of the holobiont. Corals exposed to antibiotics under control temperature did not bleach, suggesting that temperature may be an important factor influencing the activity, diversity and ecological function of the holobiont bacterial community.
机译:这项研究检查了当用抗生素处理细菌群落时,珊瑚虹膜对热应激的反应。 cil虫的菌落暴露于针对与珊瑚相关的α和y-变形杆菌的宽谱和窄谱抗生素。将珊瑚逐渐从控制温度从26℃加热到31℃,并测量宿主,虫黄藻和微生物的状况。抗生素人为地降低了细菌的丰度和活性,但对虫黄藻的光合效率或宿主组织蛋白含量的影响最小。没有抗生素的加热珊瑚显示F_VIF_M显着下降,这是典型的热应激。但是,用抗生素治疗的加热珊瑚除了F_V / F_M下降外,还显示出严重的组织损失。这项研究表明,破坏微生物联盟减少了整体菌的复原力。在控制温度下暴露于抗生素的珊瑚没有漂白,这表明温度可能是影响全盐细菌群落活性,多样性和生态功能的重要因素。

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  • 来源
    《Marine biology》 |2012年第8期|p.1763-1771|共9页
  • 作者单位

    Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia;

    Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia,School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia;

    Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia;

    Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia;

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