The study on coral gene responding to the marine acidification and the elevated temperature

Abstract

Coral reefs are the most magnificent and diverse marine ecosystems on Earth. Coral reefs have had a crucial role in shaping the ecosystems that have dominated tropical oceans over the past 200 million years. Recently major impacts of climate change including, elevated temperature and marine acidification, might have accelerated the process of destruction on coral reefs worldwide. By investigating changes in coral gene expression triggered by particular environmental stressors. we can characterize coral stress responses at molecular level, which develop powerful diagnostic tools for evaluating coral health in the field. In this research, we studied the physiological aspect, and transcriptional responses of the soft coral (Scleronephthya gracillimum) in Korea against combination of heat and carbon dioxide (CO2). We collected corals from Jeju , Korea. The pH, heat stress(28 ℃ + pH 7.0, 28 ℃ + pH 7.5, 28 ℃ + pH 7.8) exposure for 24 hr and 48hr induces morphological changes. For the microarray experiment, we exposed corals to various pH and heat stress(28 ℃ + pH 7.0, 28 ℃ + pH 7.5, 28 ℃ + pH 7.8). As the results, we found the shared genes in corals responding to various stresses. The common genes (1105 genes) expressions were induced and 572 common genes were reduced over 2 fold by 28 ℃ + pH 7.0, 28 ℃ + pH 7.5 and 28 ℃ + pH 7.8 for 24 hr. The common genes (609 genes) expressions were induced and 892 common genese change including, elevated temperature and marine acidification, might have accelerated the process of destruction on coral reefs worldwide. By investigating changes in coral gene expression triggered by particular environmental stressors. we can characterize coral stress responses at molecular level, which develop powerful diagnostic tools for evaluating coral health in the field. In this research, we studied the physiological aspect, and transcriptional responses of the soft coral (Scleronephthya gracillimum) in Korea against combination of heat and carbon dioxide (CO2). We collected corals from Jeju , Korea. The pH, heat stress(28 ℃ + pH 7.0, 28 ℃ + pH 7.5, 28 ℃ + pH 7.8) exposure for 24 hr and 48hr induces morphological changes. For the microarray experiment, we exposed corals to various pH and heat stress(28 ℃ + pH 7.0, 28 ℃ + pH 7.5, 28 ℃ + pH 7.8). As the results, we found the shared genes in corals responding to various stresses. The common genes (1105 genes) expressions were induced and 572 common genes were reduced over 2 fold by 28 ℃ + pH 7.0, 28 ℃ + pH 7.5 and 28 ℃ + pH 7.8 for 24 hr. The common genes (609 genes) expressions were induced and 892 common genes