Sedimentation rapidly induces an immune response and depletes energy stores in a hard coral
Sedimentation rapidly induces an immune response and depletes energy stores in a hard coral
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沉积物会迅速引发免疫反应并耗尽硬珊瑚中储存的能量
DOI：
10.1007/s00338-014-1202-x
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发表时间：
2014
期刊：
影响因子：
3.5
通讯作者：
I. Eeckhaut
中科院分区：
文献类型：
--
作者：
C. Sheridan;P. Grosjean;J. Leblud;C. Palmer;A. Kushmaro;I. Eeckhaut
高沉降率与多个系统内珊瑚健康状况的下降有关;然而，这是否是珊瑚免疫力受损的直接结果，以前没有调查过。通过比较接种灭菌海洋沉积物和对照条件下的珊瑚碎片的生理反应，研究了沉积对硬珊瑚Montipora patula免疫力的潜在影响。沉积物收集从陆地径流影响的珊瑚礁在西南马达加斯加和周期性应用共24小时的降水引起的沉积事件期间观察到的速率。珊瑚健康确定24小时后，通过测量代谢代理O2预算和脂质比的沉积应力的发病。通过定量酚氧化酶活性和黑色素沉积来测量黑色素合成途径的免疫应答。沉降诱导M.帕图拉酚氧化酶活性和黑色素沉积显着较高的沉积物处理相比，对照组，表明诱导的免疫反应。与对照组相比，沉积物处理过的珊瑚还表现出呼吸作用增加（夜间）和光合作用减少（白天）的趋势，能量储备显著枯竭。这些数据突出表明，短期（24小时）沉降，没有活的微生物，损害了M。帕图拉可能由与无菌沉积物相关的残留内毒素和其他炎性颗粒引起的能量昂贵的免疫应答可能导致能量消耗。总的来说，接触沉积物对珊瑚健康产生不利影响，持续接触沉积物可能导致资源枯竭和更易患病。
High sedimentation rates have been linked to reduced coral health within multiple systems; however, whether this is a direct result of compromised coral immunity has not been previously investigated. The potential effects of sedimentation on immunity of the hard coral Montipora patula were examined by comparing physiological responses of coral fragments inoculated with sterilized marine sediments and those under control conditions. Sediments were collected from terrestrial runoff-affected reefs in SW Madagascar and applied cyclically for a total of 24 h at a rate observed during precipitation-induced sedimentation events. Coral health was determined 24 h after the onset of the sedimentation stress through measuring metabolic proxies of O2 budget and lipid ratios. Immune response of the melanin synthesis pathway was measured by quantifying phenoloxidase activity and melanin deposits. Sedimentation induced both immune and metabolic responses in M. patula. Both phenoloxidase activity and melanin deposition were significantly higher in the sediment treatment compared to controls, indicating an induced immune response. Sediment-treated corals also showed a tendency towards increased respiration (during the night) and decreased photosynthesis (during the day) and a significant depletion of energy reserves as compared to controls. These data highlight that short-term (24 h) sedimentation, free of live microorganisms, compromises the health of M. patula. The energetically costly immune response, potentially elicited by residual endotoxins and other inflammatory particles associated with the sterile sediments, likely contributes to the energy depletion. Overall, exposure to sedimentation adversely affects coral health and continued exposure may lead to resource depletion and an increased susceptibility to disease.
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影响因子：
56.9
作者：
Harvell, CD;Kim, K;Vasta, GR
通讯作者：
Vasta, GR
影响因子：
29.7
作者：
Rock KL;Latz E;Ontiveros F;Kono H
通讯作者：
Kono H
巴哈马李斯托金岛附近的珊瑚疾病：模式和潜在驱动因素。
DOI：
10.3354/dao069033
发表时间：
2006
期刊：
Diseases of aquatic organisms.
影响因子：
--
作者：
Voss,JoshuaD;Richardson,LaurieL
通讯作者：
Richardson,LaurieL
影响因子：
5.2
作者：
Anthony, Kenneth R. N.;Hoogenboom, Mia O.;Middlebrook, Rachael
通讯作者：
Middlebrook, Rachael