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Principal Investigator (Affiliation)
  • SDGs11
Associate Prof.
MARUYAMA Fumito
(Graduate School of Medicine, Kyoto University)
Research Institutions in Japan Kyoto University
Research Institutions in Chile La Frontera University
Adoption fiscal year FY 2017
Research Period 5 Years
ODA Recipient Country Republic of Chile
General Description of the Research Project This study aims to elucidate the mechanism of harmful red tide—a cause of mass mortality of cultured salmon in southern Chile—from the viewpoints of both environment (climate, water quality, water temperature, etc.) and microbiology. Red tide is caused by coloration of seawater through the abnormal growth of microalgae which belong to various groups. We collectively termed algal bloom associating microbiome (algae, bacteria and viruses) as “red tide holobiome”, and aim to characterize its biological components by combining metagenomic/metatranscriptomic and classical ecophysiology approaches.
Interaction between the red-tide causative algae and other microorganisms is considered to be an important factor in the emergence and disappearance of red tide. In this study, a sequential whole-genome analysis method is employed to detect and quantify red tide causative algae, bacteria, and viruses. This is intended to gain a comprehensive understanding of biological interactions, which has been unachievable with conventional single-specie monitoring. Further, for more stable operation of the aquaculture industry, the understanding of the red tide holobiome is leveraged to establish an appropriate environmental evaluation method and develop cultivation/prevention measures through government-academia-industry collaboration.
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