The effects of environmental history and thermal stress on coral physiology and immunity
The effects of environmental history and thermal stress on coral physiology and immunity
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环境史和热应激对珊瑚生理和免疫的影响
DOI：
10.1007/s00227-018-3317-z
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发表时间：
2018
期刊：
影响因子：
2.4
通讯作者：
Putnam, Hollie M.
中科院分区：
文献类型：
--
作者：
Wall, Christopher B.;Ricci, Contessa A.;Foulds, Grace E.;Mydlarz, Laura D.;Gates, Ruth D.;Putnam, Hollie M.
海洋温度上升会导致珊瑚礁建造珊瑚和共生生物之间的共生关系破裂，这种现象被称为珊瑚漂白。然而，环境历史可能会影响珊瑚对压力的反应，并影响漂白结果。评估了一组生理和免疫学特征，以测试环境历史(低和高可变二氧化碳)对珊瑚礁珊瑚Montipora Capatata对高温(24.5℃比30.5℃)的响应的影响。与环境处理相比，加热降低了珊瑚的最大光化学效率(Fv/Fm)和叶绿素含量，但增加了珊瑚组织中的黑色素，表明黑色素合成途径在热应激的早期阶段起到了作用。然而，没有观察到环境历史和温度处理的交互作用。相反，平行反应规范是关于珊瑚礁环境历史的两个温度处理中记录的主要反应模式。与具有较低pCO2变异性的珊瑚相比，具有较大pCO2变异性的珊瑚具有更高的结构性抗氧化和免疫活性(即过氧化氢酶、超氧化物歧化酶、酚氧化酶)和Fv/Fm，但黑色素和叶绿素较低。这表明，具有高度pCO2变异性的珊瑚礁环境促进了常驻珊瑚更强的抗氧化剂和免疫活性。这些结果表明，珊瑚的生理学和免疫力反映了在短距离内不同的环境属性，这些差异可能缓冲了热应激对珊瑚表型的影响程度。
Rising ocean temperatures can induce the breakdown of the symbiosis between reef building corals andSymbiodiniumin the phenomenon known as coral bleaching. Environmental history may, however, influence the response of corals to stress and affect bleaching outcomes. A suite of physiological and immunological traits was evaluated to test the effect of environmental history (low vs. high variable pCO2) on the response of the reef coralMontipora capitatato elevated temperature (24.5 °C vs. thermal ramping to 30.5 °C). Heating reduced maximum photochemical efficiency (Fv/Fm) and chlorophyllabut increased tissue melanin in corals relative to the ambient treatment, indicating a role of the melanin synthesis pathway in the early stages of thermal stress. However, interactions of environmental history and temperature treatment were not observed. Rather, parallel reaction norms were the primary response pattern documented across the two temperature treatments with respect to reef environmental history. Corals with a history of greater pCO2variability had higher constitutive antioxidative and immune activity (i.e., catalase, superoxide dismutase, prophenoloxidase) andFv/Fm, but lower melanin and chlorophylla, relative to corals with a history of lower pCO2variability. This suggests that reef environments with high magnitude pCO2variability promote greater antioxidant and immune activity in resident corals. These results demonstrate coral physiology and immunity reflect environmental attributes that vary over short distances, and that these differences may buffer the magnitude of thermal stress effects on coral phenotypes.
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影响因子：
2.4
作者：
Couch, C. S.;Mydlarz, L. D.;Douglas, N. L.
通讯作者：
Douglas, N. L.
珊瑚礁生物学和地质学——不仅仅是规模问题
DOI：
10.1007/978-94-017-7249-5_3
发表时间：
2015
期刊：
The Journal of Pathology
影响因子：
--
作者：
D. Hubbard
通讯作者：
D. Hubbard
太阳辐射对安达曼海浅水珊瑚礁白化的影响，1993-1998
影响因子：
3.5
作者：
R. Dunne;Barbara E. Brown
通讯作者：
Barbara E. Brown
影响因子：
3
作者：
Vijayan, Vijitha;Jasmin, Chekidhenkuzhiyil;Nair, Shanta
通讯作者：
Nair, Shanta
影响因子：
4.5
作者：
L. Rodrigues;A. Grottoli
通讯作者：
L. Rodrigues;A. Grottoli