Stability of coral–endosymbiont associations during and after a thermal stress event in the southern Great Barrier Reef
Stability of coral–endosymbiont associations during and after a thermal stress event in the southern Great Barrier Reef
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大堡礁南部热应激事件期间和之后珊瑚-内共生体关联的稳定性
DOI：
10.1007/s00338-009-0509-5
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发表时间：
2009
期刊：
影响因子：
3.5
通讯作者：
Dee A. Carter
中科院分区：
文献类型：
--
作者：
Michael Stat;Michael Stat;W. Loh;T. Lajeunesse;O. Hoegh‐Guldberg;Dee A. Carter
共生鞭毛藻群落向更适合当时环境条件的群落转变，可能为造礁珊瑚提供了一种快速适应环境变化的机制。在这项研究中，研究人员在2002年对大堡礁南部10种珊瑚中的优势共生菌进行了为期1年的监测，同时发生了一次热应激事件。利用大亚基rDNA单链构象多态性和内部转录间隔区2的变性梯度凝胶电泳对共生菌群落进行分子遗传分析，未发现该群落在热胁迫事件期间和之后发生任何变化。7种珊瑚群落发生了白化，但与原来的共生体一起恢复。这一研究表明，共生体对热胁迫的洗牌或转换可能仅限于某些珊瑚物种，而可能不是珊瑚-共生体关系的普遍特征。
Shifts in the community of symbiotic dinoflagellates to those that are better suited to the prevailing environmental condition may provide reef-building corals with a rapid mechanism by which to adapt to changes in the environment. In this study, the dominant Symbiodinium in 10 coral species in the southern Great Barrier Reef was monitored over a 1-year period in 2002 that coincided with a thermal stress event. Molecular genetic profiling of Symbiodinium communities using single strand conformational polymorphism of the large subunit rDNA and denaturing gradient gel electrophoresis of the internal transcribed spacer 2 region did not detect any changes in the communities during and after this thermal-stress event. Coral colonies of seven species bleached but recovered with their original symbionts. This study suggests that the shuffling or switching of symbionts in response to thermal stress may be restricted to certain coral species and is probably not a universal feature of the coral–symbiont relationship.