Possible toxic factors in the glycocalyx of Chattonella
| Project/Area Number |
15K07580
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Aquatic life science
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| Research Institution | Nagasaki University |
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Principal Investigator |
ODA Tatsuya 長崎大学, 水産・環境科学総合研究科(水産), 教授 (60145307)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 赤潮 / 微細藻類 / 毒性 / 活性酸素 / 溶血毒素 / シャットネラ / カレニア / ラフィド藻類 / 渦鞭毛藻類 / グリコキャリックス / プランクトン / 糖被膜 / 魚毒性 |
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| Outline of Final Research Achievements |
We compared the fish-killing activities of Chattonella marina isolated in 1985 and Chattonella antiqua isolated in 2010. Nearly 100% of the fish species died within a few hours exposure to C. antiqua at 10,000 cells/ml, whereas no dead fish were observed even 24 h after initial exposure to C. marina at 10,000 cells/ml. Chemiluminescence and electron spin resonance (ESR) analyses suggested greater reactive oxygen species (ROS)-producing activity of C. antiqua than of C. marina. These results suggest that the ROS-producing activity and affinity of Chattonella cells to the gill surface may be important factors for the fish-killing activity. We also investigated the effects of two strains of the dinoflagellate Karenia mikimotoi (SUO-1 and FUK) on the rotifer. The strain SUO-1 showed highly toxic effect on rotifer, whereas the strain FUK showed obviously lower toxicity. The cell suspension of SUO-1 showed a hemolytic activity toward horse erythrocytes, but FUK did not.
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] Comparative studies on the fish-killing activities of Chattonella marina isolated in 1985 and Chattonella antiqua isolated in 2010, and their possible toxic factors2016
Author(s)
Kichul Cho, Jun Sakamoto, Tatsuki Noda, Tomoki Nishiguchi, Mikinori Ueno, Yasuhiro Yamasaki, Motoaki Yagi, Daekyung Kim, Tatsuya Oda
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Journal Title
Bioscience, Biotechnology, and Biochemistry
Volume: 80
Issue: 4
Pages: 811-817
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Anti-obesity effects of enzymatically-digested alginate oligomer in mice model fed a high-fat-diet.2016
Author(s)
Satoru Nakazono, Kichul Cho, Shogo Isaka, Ryogo Abu, Takeshi Yokose, Masakazu Murata, Mikinori Ueno, Katsuyasu Tachibana, Kaysuya Hirasaka, Daekyung Kim, Tatsuya Oda
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Journal Title
Bioactive Carbohydrates and Dietary Fibre
Volume: 7
Pages: 1-8
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Lethal effects of ichthyotoxic raphidophytes, Chattonella marina, C. antiqua, and Heterosigma akashiwo, on post-embryonic stages of the Japanese pearl oyster, Pinctada fucata martensii2016
Author(s)
Leila Basti, Kiyohito Nagai, Jiyoji Go, Sho Okano, Tatsuya Oda, Yuji Tanaka, Satoshi Nagai
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Journal Title
Harmful Algae
Volume: 59
Pages: 112-122
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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