High-temperature acclimation strategies within the thermally tolerant endosymbiont Symbiodinium trenchii and its coral host, Turbinaria reniformis, differ with changing pCO(2) and nutrients

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	High-temperature acclimation strategies within the thermally tolerant endosymbiont Symbiodinium trenchii and its coral host, Turbinaria reniformis, differ with changing pCO(2) and nutrients
	Hoadley, Kenneth D.; Pettay, D. Tye; Grottoli, Andrea G.; Cai, Wei-Jun; Melman, Todd F.; Levas, Stephen; Schoepf, Verena; Ding, Qian; Yuan, Xiangchen; Wang, Yongchen
刊名	MARINE BIOLOGY
	2016
卷号	163 期号:6 页码:134
通讯作者	Hoadley, KD (reprint author), Univ Delaware, Sch Marine Sci & Policy, Lewes, DE 19958 USA.
中文摘要	The dinoflagellate Symbiodinium trenchii associates with a wide array of host corals throughout the world, and its thermal tolerance has made it of particular interest within the context of reef coral resilience to a warming climate. However, future reefs are increasingly likely to face combined environmental stressors, further complicating our understanding of how S. trenchii will possibly acclimatize to future climate scenarios. Over a 33-day period, we characterized the individual and combined affects of high temperature (26.5 vs. 31.5 degrees C), pCO(2) (400 vs. 760 mu atm), and elevated nutrients (0.4 and 0.2 vs. 3.5 and 0.3 mu mol of NO3/NO2 and PO43-, respectively) on S. trenchii within the host coral species Turbinaria reniformis. Global analysis across all treatments found temperature to be the largest driver of physiological change. However, exposure to elevated temperature led to changes in symbiont physiology that differed across pCO(2) concentrations. Net photosynthesis and cellular chlorophyll a increased with temperature under ambient pCO(2), whereas temperature-related differences in cellular volume and its affect on pigment packaging were more pronounced under elevated pCO(2). Furthermore, increased nutrients mitigated the physiological response to high temperature under both ambient and elevated pCO(2) conditions and represented a significant interaction between all three physical parameters. Individual responses to temperature and pCO(2) were also observed as cellular density declined with elevated temperature and calcification along with respiration rates declined with increased pCO(2). Symbiodinium trenchii remained the dominant symbiont population within the host across all treatment combinations. Our results reveal distinct physiological changes in response to high temperature within the S. trenchii/T. reniformis symbioses that are dependent on pCO(2) and nutrient concentration, and represent important interactive effects to consider as we consider how corals will respond under future climate change scenarios.
学科主题	Marine & Freshwater Biology
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15401]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
推荐引用方式 GB/T 7714	Hoadley, Kenneth D.,Pettay, D. Tye,Grottoli, Andrea G.,et al. High-temperature acclimation strategies within the thermally tolerant endosymbiont Symbiodinium trenchii and its coral host, Turbinaria reniformis, differ with changing pCO(2) and nutrients[J]. MARINE BIOLOGY,2016,163(6):134.
APA	Hoadley, Kenneth D..,Pettay, D. Tye.,Grottoli, Andrea G..,Cai, Wei-Jun.,Melman, Todd F..,...&Warner, Mark E..(2016).High-temperature acclimation strategies within the thermally tolerant endosymbiont Symbiodinium trenchii and its coral host, Turbinaria reniformis, differ with changing pCO(2) and nutrients.MARINE BIOLOGY,163(6),134.
MLA	Hoadley, Kenneth D.,et al."High-temperature acclimation strategies within the thermally tolerant endosymbiont Symbiodinium trenchii and its coral host, Turbinaria reniformis, differ with changing pCO(2) and nutrients".MARINE BIOLOGY 163.6(2016):134.