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| DOI | 10.1186/s40168-023-01738-0 |
| Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis | |
| 发表日期 | 2024 |
| ISSN | 2049-2618 |
| 起始页码 | 12 |
| 结束页码 | 1 |
| 卷号 | 12期号:1 |
| 英文摘要 | Background Global warming is causing large-scale disruption of cnidarian-Symbiodiniaceae symbioses fundamental to major marine ecosystems, such as coral reefs. However, the mechanisms by which heat stress perturbs these symbiotic partnerships remain poorly understood. In this context, the upside-down jellyfish Cassiopea has emerged as a powerful experimental model system. Results We combined a controlled heat stress experiment with isotope labeling and correlative SEM-NanoSIMS imaging to show that host starvation is a central component in the chain of events that ultimately leads to the collapse of the Cassiopea holobiont. Heat stress caused an increase in catabolic activity and a depletion of carbon reserves in the unfed host, concurrent with a reduction in the supply of photosynthates from its algal symbionts. This state of host starvation was accompanied by pronounced in hospite degradation of algal symbionts, which may be a distinct feature of the heat stress response of Cassiopea. Interestingly, this loss of symbionts by degradation was concealed by body shrinkage of the starving animals, resulting in what could be referred to as invisible bleaching. Conclusions Overall, our study highlights the importance of the nutritional status in the heat stress response of the Cassiopea holobiont. Compared with other symbiotic cnidarians, the large mesoglea of Cassiopea, with its structural sugar and protein content, may constitute an energy reservoir capable of delaying starvation. It seems plausible that this anatomical feature at least partly contributes to the relatively high stress tolerance of these animals in rapidly warming oceans. |
| 英文关键词 | Climate change; Photosymbiosis; Cnidaria; Symbiodiniaceae; Bleaching; Metabolism; NanoSIMS |
| 语种 | 英语 |
| WOS研究方向 | Microbiology |
| WOS类目 | Microbiology |
| WOS记录号 | WOS:001176923800002 |
| 来源期刊 | MICROBIOME
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/289568 |
| 作者单位 | Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Universite Perpignan Via Domitia; Universite PSL; Ecole Pratique des Hautes Etudes (EPHE); Centre National de la Recherche Scientifique (CNRS); University of Lausanne; University of Lausanne; University of Lausanne |
| 推荐引用方式 GB/T 7714 | . Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis[J],2024,12(1). |
| APA | (2024).Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis.MICROBIOME,12(1). |
| MLA | "Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis".MICROBIOME 12.1(2024). |
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