The Library
Genome sequence of Ostreococcus tauri virus OtV-2 enlightens the role of picoeukaryote niche separation in the ocean
Tools
Weynberg, Karen Dawn, Allen, Michael J., Gilg, Ilana C., Scanlan, David J. and Wilson, William H. (2011) Genome sequence of Ostreococcus tauri virus OtV-2 enlightens the role of picoeukaryote niche separation in the ocean. Journal of Virology, Vol.85 (No.9). pp. 4520-4529. doi:10.1128/JVI.02131-10 ISSN 1098-5514.
|
PDF
WRAP_Scanlan_-weynberg_otv-2_j_virol_accepted_jan11.pdf - Requires a PDF viewer. Download (213Kb) |
Official URL: http://dx.doi.org/10.1128/JVI.02131-10
Abstract
Ostreococcus tauri, a unicellular marine green alga, is the smallest known free-living
eukaryote and is ubiquitous in the surface oceans. The ecological success of this
organism has been attributed to distinct low- and high-light adapted ecotypes existing
in different niches at a range of depths in the ocean. Viruses have already been
characterised that infect the high-light adapted strains. Ostreococcus tauri virus
isolate OtV-2 is a large double stranded DNA algal virus that infects a low-light
adapted strain of O. tauri and was assigned to the algal virus family Phycodnaviridae,
genus Prasinovirus. Our working hypothesis for this study was that different viruses
infecting high-light vs. low-light adapted O. tauri strains would provide clues to
propagation strategies that would give them selective advantages within their
particular light niche. Sequence analysis of the 184,409 base pair linear OtV-2
genome revealed a range of core functional genes exclusive to this low-light genotype
and included a variety of unexpected genes, such as those encoding a RNA
polymerase sigma factor, at least four DNA methyltransferases, a cytochrome b5 and a
high affinity phosphate transporter. It is clear that OtV-2 has acquired a range of
potentially functional genes from its host, other eukaryotes and even bacteria over
evolutionary time. Such piecemeal accretion of genes is a trademark of large doublestranded
DNA viruses that has allowed them to adapt their propagation strategies to
keep up with host niche separation in the sunlit layers of the oceanic environment.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QK Botany | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
Library of Congress Subject Headings (LCSH): | Green algae -- Viruses -- Genetics | ||||
Journal or Publication Title: | Journal of Virology | ||||
Publisher: | American Society for Microbiology | ||||
ISSN: | 1098-5514 | ||||
Official Date: | May 2011 | ||||
Dates: |
|
||||
Volume: | Vol.85 | ||||
Number: | No.9 | ||||
Page Range: | pp. 4520-4529 | ||||
DOI: | 10.1128/JVI.02131-10 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Natural Environment Research Council (Great Britain) (NERC), National Science Foundation (U.S.) (NSF) | ||||
Grant number: | NER/S/A/2005/13204, MGF196 (NERC) ; EF0949162 ( National Science Foundation) |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year