2012 Fiscal Year Final Research Report
Photoregulation of diurnal vertical migration in red-tide algae
| Project/Area Number |
23880034
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
General fisheries
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| Research Institution | Fisheries Research Agency |
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Principal Investigator |
SHIKATA Tomoyuki 独立行政法人水産総合研究センター, 瀬戸内海区水産研究所, 研究員 (40603048)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 海洋生態 / 生理学 / 赤潮 / 鞭毛藻類 / 体内時計 |
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| Research Abstract |
We examined effects of light environment on the rhythm of diurnal vertical migration in a harmful red-tide flagellate Chattonella antiqua. As a result, it was found that irradiation of weak UV-A/blue light (?0.03umol m^<-2>s^<-1>，360-480 nm) during the dark periodchangesthe rhythm of diurnal vertical migration. Furthermore, by total mRNA-seqof C. antiquacells collected in the dark period, homologous sequences of blue light receptors such as cryptochrome and aureochrome were found. In the near future, we will analyze contributions of these blue light receptorsto the light-induced phase shiftof diurnal vertical migration.
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