2018 Fiscal Year Final Research Report
Regulations of symbiont turnover and phagosomal micro-environments reflecting the stability of coral-algal symbiosis
| Project/Area Number |
17K15163
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Evolutionary biology
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Research Collaborator |
Kawata Masakado
Ishii Yuu
Miyazawa Makoto
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Keywords | 共生 / 細胞 / 刺胞動物 / 褐虫藻 |
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| Outline of Final Research Achievements |
Symbiodiniaceae algae are known as coral symbionts and play crucial roles in the coral-algal symbiosis to sustain the primary production in oligotrophic tropical and subtropical oceans. However, cellular mechanisms relevant to the establishment of the symbiosis remain to be clarified. In this study, via integrating live imaging and cell fractionation methods, foundational techniques and tools to investigate the dynamics of symbiont cells and plastic particles ingested by host cnidarian animals were developed. The results suggested that ingestion activity of the host endodermis played a key role in maintaining the stable symbiosis with symbiotic algae.
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| Free Research Field |
共生ゲノム進化
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| Academic Significance and Societal Importance of the Research Achievements |
近年、「サンゴの白化」と呼ばれるような、褐虫藻と刺胞動物との共生が崩壊する現象が大きな環境問題となっているが、この細胞内共生を支える細胞レベルでの仕組みはよく分かっていなかった。本研究で開発された技術を用いることにより、安定な共生の維持に関わる細胞機能を詳細に解析することができるようになった。これを用いることで、マイクロプラスチックなどの海洋汚染微粒子が生物に与える影響などを解析する実験系への発展などが期待される。
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