| Project/Area Number |
15K18616
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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 |
Ecology/Environment
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| Research Institution | Nihon University |
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Principal Investigator |
KOITO Tomoko 日本大学, 生物資源科学部, 講師 (10583148)
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| Research Collaborator |
INOUE Koji
NAGASAKI Toshihiro
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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 |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | タウリン合成経路 / ヒポタウリン / チオタウリン / 深海性多毛類 / 硫化水素無毒化 / 硫化水素 / 熱水噴出域 |
|---|
| Outline of Final Research Achievements |
The deep-sea hydrothermal vents are known to belch out sulfide-rich fluid. Although hydrogen sulfide is harmful for animals, it has been observed the flourishing invertebrate communities. In this study, we focused on the two polychaete species (Paralvinella hessleri and phyllodocida) which inhabit sympatrically, to reveal the adaptation mechanism for ambient hydrogen sulfide. Based on our results, we found that both species synthesize the hypotaurine and taurine in their body using taurine synthesis pathway which was identical with mammalian pathway. Furthermore, the expression levels of enzyme genes which involve in taurine synthesis were up or down regulated by sulfide exposure level. Thus, it is considered that deep-sea polychaetes could response to ambient hydrogen sulfide and change the level of synthesis of taurine.
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