2013 Fiscal Year Final Research Report
Ecology of diatom DNA and RNA viruses in marine environments
| Project/Area Number |
22688016
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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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 |
TOMARU Yuji 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, 主任研究員 (10416042)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 珪藻 / ウイルス / 生態 |
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| Research Abstract |
Since the first discovery of a diatom-infecting virus, viral infection is assumed to be a significant factor affecting the dynamics of diatoms. Recently, two diatom viruses, CtenDNAV and CtenRNAV, which share the same host species, Chaetoceros tenuissimus, were isolated and characterised. We evaluated the relationships between water temperature and viral infections. The results showed that the host population decline due to CtenDNAV was faster at higher water temperatures, and vice versa for CtenRNAV. The susceptibilities of the host species to CtenRNAV were diverse among the strains, and they changed along with water temperature, but not for CtenDNAV. These virus proliferation characteristics, including dependency on water temperature, might be important factors affecting the diatom hos and virus relationship, resulting in both their dominance and survival in nature.
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[Journal Article] Isolation and characterization of a single-stranded DNA virus infecting the marine planktonic diatom Chaetoceros sp2012
Author(s)
Toyoda, K., Kimura, K., Hata, N., Nakayama, N., Nagasaki, K., Tomaru, Y
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Journal Title
Plankton Benthos Res
Volume: 7
Pages: 20-18
Peer Reviewed
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[Journal Article] First evidence for the existence of pennate diatom viruses2012
Author(s)
Tomaru, Y., Toyoda, K., Kimura, K., Hata, N., Yoshida, M., Nagasaki K
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Journal Title
DOI
Peer Reviewed
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