Coral reefs are one of the most biologically diverse and economically important ecosystems on earth. However, the destruction of coral reefs has been reported worldwide owing to rising seawater temperature associated with global warming. In this study, we investigated the potential of a redox nanoparticle (RNPO) to scavenge reactive oxygen species (ROS), which are overproduced under heat stress and play a crucial role in causing coral mortality. When reef-building coral (Acropora tenuis) larvae, without algal symbionts, were exposed to thermal stress at 33 °C, RNPO treatment significantly increased the survival rate. Proteome analysis of coral larvae was performed using nano-liquid chromatography-tandem mass spectrometry for the first time. The results revealed that several proteins related to ROS-induced oxidative stress were specifically identified in A. tenuis larvae without RNPO treatment, whereas these proteins were absent in RNPO-treated larvae, which suggested that RNPO effectively scavenged ROS from A. tenuis larvae. Results from this study indicate that RNPO treatment can reduce ROS in aposymbiotic coral larvae and would be a promising approach for protecting corals from thermal stress.
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Motone, K., Takagi, T., Aburaya, S. et al. Protection of Coral Larvae from Thermally Induced Oxidative Stress by Redox Nanoparticles. Mar Biotechnol 20, 542–548 (2018). https://doi.org/10.1007/s10126-018-9825-5
- Coral larvae
- Heat stress
- Reactive oxygen species
- Redox nanoparticle