The role of background algal symbionts as drivers of shuffling to thermotolerant Symbiodiniaceae following bleaching in three Caribbean coral species
The role of background algal symbionts as drivers of shuffling to thermotolerant Symbiodiniaceae following bleaching in three Caribbean coral species
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背景藻类共生体作为三种加勒比珊瑚物种白化后向耐热共生科的驱动因素的作用
DOI：
10.1007/s00338-023-02428-x
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发表时间：
2023
期刊：
影响因子：
3.5
通讯作者：
Baker, Andrew C.
中科院分区：
文献类型：
--
作者：
Buzzoni, Daisy;Cunning, Ross;Baker, Andrew C.
造礁珊瑚中含有不同的甲藻共生体(共生科)，其特性可以影响宿主的耐热性，其相对丰度可以是动态的。在“漂白”事件中这种共生的破坏可以促进共生群落的变化，有利于耐热类型的变化，特别是在Durusdinium属中。我们使用实验性的漂白来操纵三个常见的加勒比海造礁物种(Montastraea cavernosa，Orbecella bleolata，和Siderastrea siderea)的共生体群落，并测试采集珊瑚时共生体群落的季节差异是否影响它们对操纵的反应。伊诺。FaveolataandS.铁杉，初始本底比例的最低阈值，杜氏藻可以从主要是杜氏藻的漂白中恢复。相比之下，INM。海绵体、Durusdinium在恢复后变得高度优势，即使在漂白之前它是不可察觉的。INM也检测到了季节性变化。洞穴和S。与前一年4月(最低温度之后)相比，10月份(在年最高温度之后)每个寄主细胞的共生体数量分别显著增加和减少。这些结果表明，背景共生体和共生体密度的季节差异如何影响不同珊瑚物种中藻类共生体群落的干扰和恢复动态，并促使进一步研究藻类共生的季节变化如何影响预计的未来漂白，鉴于气候变化下预测的冬季变暖和夏季温暖气温延长，这一点越来越重要。
Reef-building corals host diverse dinoflagellate algal symbionts (Family Symbiodiniaceae) whose identity can influence host thermotolerance and whose relative abundance can be dynamic. Breakdown in this symbiosis during “bleaching” events can promote changes in symbiont communities in favour of thermotolerant types, particularly in the genusDurusdinium.We employed experimental bleaching to manipulate the symbiont communities of three common Caribbean reef-building species (Montastraea cavernosa,Orbicella faveolata, andSiderastrea siderea) and tested whether seasonal differences in the corals’ symbiont communities at the time of their collection affected their responses to manipulation. InO. faveolataandS. siderea, a minimum threshold of initial background proportionDurusdinium trenchiishaped recovery from bleaching with mainlyDurusdinium. In contrast, inM. cavernosa,Durusdiniumbecame highly dominant after recovery even when it was undetectable prior to bleaching. Seasonal changes were also detected inM. cavernosaandS. sidereadominated byCladocopium, with significant increases and decreases, respectively, in symbionts per host cell in October (following annual temperature maxima) compared to the previous April (following temperature minima). These results demonstrate how background symbionts and seasonal differences in symbiont density can affect the disturbance and recovery dynamics of algal symbiont communities in different coral species, and prompt further research into how seasonal changes in algal symbiosis might inform projected future bleaching, which is increasingly relevant in light of predicted winter warming and prolonged warm summer temperatures under climate change.
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从漂白剂中恢复是由背景珊瑚礁珊瑚中的背景热耐耐性共生体类型的阈值密度介导的。
影响因子：
3.5
作者：
Bay LK;Doyle J;Logan M;Berkelmans R
通讯作者：
Berkelmans R
影响因子：
3.1
作者：
Baird, Mark E.;Mongin, Mathieu;Skerratt, Jennifer
通讯作者：
Skerratt, Jennifer
三种加勒比珊瑚的多个位置的共生甲藻的差异叶黄素循环和光化学活性
影响因子：
2
作者：
M. Warner;S. Berry
通讯作者：
S. Berry
影响因子：
2.7
作者：
Kenkel, Carly D.;Bay, Line K.
通讯作者：
Bay, Line K.
DOI：
10.1098/rspb.2020.0049
发表时间：
2020-03-11
影响因子：
4.7
作者：
Krueger, Thomas;Horwitz, Noa;Meibom, Anders
通讯作者：
Meibom, Anders