Coral physiology and microbiome dynamics under combined warming and ocean acidification.
Coral physiology and microbiome dynamics under combined warming and ocean acidification.
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DOI：
10.1371/journal.pone.0191156
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发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
Schoepf V
中科院分区：
文献类型：
--
作者：
Grottoli AG;Dalcin Martins P;Wilkins MJ;Johnston MD;Warner ME;Cai WJ;Melman TF;Hoadley KD;Pettay DT;Levas S;Schoepf V
海水温度上升和海洋酸化威胁着珊瑚礁的生存。珊瑚生理学与其微生物组之间的关系可能会揭示为什么有些珊瑚对这些全球变化条件更有弹性。在这里，我们进行了第一个同时研究珊瑚微生物组和珊瑚生理变化的实验，以应对海水温度升高和海洋酸化的双重压力，预计到本世纪末。将含有热敏性内共生体C21a的千孔Acropora珊瑚和含有耐热性内共生体共生菌共生菌trenchi的Turbinaria reniformis珊瑚分别暴露于对照（26.5℃，pCO2为364 μatm）和处理（29.0℃，pCO2为750 μatm）条件下24 d，测定其微生物群落组成。这些微生物研究结果是在本研究中对同一珊瑚进行的先前发表的生理测量（钙化，有机碳通量，光合作用与呼吸作用的比率，光系统II最大效率，总脂质，可溶性动物蛋白，可溶性动物碳水化合物，可溶性藻蛋白，可溶性藻碳水化合物，生物量，内共生藻密度和叶绿素a）的背景下解释的。总体而言，双重胁迫下的千孢霉微生物多样性降低，微生物群落组成发生较大变化，钙化、光系统II最大效率和藻类碳水化合物的生理下降显著。相比之下，双重胁迫下的reniformis珊瑚的微生物群落稳定且更加多样化，生理衰退最小，总能量储备和颗粒有机碳释放率非常高。因此，生理敏感型珊瑚与热敏感型内共生藻类的微生物组发生了变化，微生物多样性下降，而生理耐受型珊瑚与热耐受型内共生藻类的微生物组没有变化。我们的研究结果证实了最近的发现，即耐温度胁迫的珊瑚具有更稳定的微生物群，并首次证明在海洋变暖和酸化的双重压力下也是如此。我们提出，具有稳定微生物组的珊瑚在生理上也更有弹性，因此更有可能在未来持续存在，并塑造未来珊瑚礁生态系统的珊瑚物种多样性。
Rising seawater temperature and ocean acidification threaten the survival of coral reefs. The relationship between coral physiology and its microbiome may reveal why some corals are more resilient to these global change conditions. Here, we conducted the first experiment to simultaneously investigate changes in the coral microbiome and coral physiology in response to the dual stress of elevated seawater temperature and ocean acidification expected by the end of this century. Two species of corals, Acropora millepora containing the thermally sensitive endosymbiont C21a and Turbinaria reniformis containing the thermally tolerant endosymbiont Symbiodinium trenchi, were exposed to control (26.5°C and pCO2 of 364 μatm) and treatment (29.0°C and pCO2 of 750 μatm) conditions for 24 days, after which we measured the microbial community composition. These microbial findings were interpreted within the context of previously published physiological measurements from the exact same corals in this study (calcification, organic carbon flux, ratio of photosynthesis to respiration, photosystem II maximal efficiency, total lipids, soluble animal protein, soluble animal carbohydrates, soluble algal protein, soluble algal carbohydrate, biomass, endosymbiotic algal density, and chlorophyll a). Overall, dually stressed A. millepora had reduced microbial diversity, experienced large changes in microbial community composition, and experienced dramatic physiological declines in calcification, photosystem II maximal efficiency, and algal carbohydrates. In contrast, the dually stressed coral T. reniformis experienced a stable and more diverse microbiome community with minimal physiological decline, coupled with very high total energy reserves and particulate organic carbon release rates. Thus, the microbiome changed and microbial diversity decreased in the physiologically sensitive coral with the thermally sensitive endosymbiotic algae but not in the physiologically tolerant coral with the thermally tolerant endosymbiont. Our results confirm recent findings that temperature-stress tolerant corals have a more stable microbiome, and demonstrate for the first time that this is also the case under the dual stresses of ocean warming and acidification. We propose that coral with a stable microbiome are also more physiologically resilient and thus more likely to persist in the future, and shape the coral species diversity of future reef ecosystems.
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DOI：
10.1038/ismej.2012.8
发表时间：
2012-08
期刊：
The ISME journal
影响因子：
--
作者：
通讯作者：
--
影响因子：
4.5
作者：
Comeau, S.;Edmunds, P. J.;Carpenter, R. C.
通讯作者：
Carpenter, R. C.
影响因子：
10.1
作者：
BUDDEMEIER, RW;FAUTIN, DG
通讯作者：
FAUTIN, DG
影响因子：
11
作者：
Chen, Chung-Pin;Tseng, Ching-Hung;Tang, Sen-Lin
通讯作者：
Tang, Sen-Lin
影响因子：
3.7
作者：
Ceh J;Raina JB;Soo RM;van Keulen M;Bourne DG
通讯作者：
Bourne DG