Abstract
Diatom dynamics in the ocean represents one of the most interesting research themes for marine ecologists. Recent studies have shown the significance of viruses as potential sources of mortality for diatom populations, as well as the more traditional environmental factors. Here, we report the isolation and characterization of a new single- stranded DNA (ssDNA) virus (Csp05DNAV) that causes lysis in Chaetoceros sp. TG07-C28, isolated from the surface water of Ago Bay, Japan. The virus was isolated from the sediments in Ago Bay, and its infection was both lytic and species-specific. The latent period was estimated to be <24 h. The virion is 32-34 nm in diameter, and accumulates in the nucleus of host cells. Csp05DNAV has a closed circular ssDNA genome, which includes a partially double-stranded region. Partial sequence analysis revealed that the open reading frame of this virus genome was similar to the putative replicase-related proteins of previously reported diatom viruses that harbor a ssDNA genome; specifically, CsalDNAV, CdebDNAV, ClorDNAV, and CtenDNAV. Based on the genome structure, Csp05DNAV is considered to belong to the genus Bacilladnavirus. As both the host and virus were isolated from Ago Bay, the host-virus system probably is ecologically important in the bay. This finding provides basic information towards elucidating diatom dynamics in coastal waters.
| Original language | English |
|---|---|
| Pages (from-to) | 20-28 |
| Number of pages | 9 |
| Journal | Plankton and Benthos Research |
| Volume | 7 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2012 |
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Keywords
- Bacilladnavirus
- Chaetoceros
- Diatom
- Rod-shaped particle
- ssDNA
ASJC Scopus subject areas
- Oceanography
- Aquatic Science
- Ecology, Evolution, Behavior and Systematics
- Ecology
Cite this
Isolation and characterization of a single-stranded DNA virus infecting the marine planktonic diatom Chaetoceros sp. (strain TG07-C28). / Toyoda, Kensuke; Kimura, Kei; Hata, Naotsugu; Nakayama, Natsuko; Nagasaki, Keizo; Tomaru, Yuji.
In: Plankton and Benthos Research, Vol. 7, No. 1, 2012, p. 20-28.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Isolation and characterization of a single-stranded DNA virus infecting the marine planktonic diatom Chaetoceros sp. (strain TG07-C28)
AU - Toyoda, Kensuke
AU - Kimura, Kei
AU - Hata, Naotsugu
AU - Nakayama, Natsuko
AU - Nagasaki, Keizo
AU - Tomaru, Yuji
PY - 2012
Y1 - 2012
N2 - Diatom dynamics in the ocean represents one of the most interesting research themes for marine ecologists. Recent studies have shown the significance of viruses as potential sources of mortality for diatom populations, as well as the more traditional environmental factors. Here, we report the isolation and characterization of a new single- stranded DNA (ssDNA) virus (Csp05DNAV) that causes lysis in Chaetoceros sp. TG07-C28, isolated from the surface water of Ago Bay, Japan. The virus was isolated from the sediments in Ago Bay, and its infection was both lytic and species-specific. The latent period was estimated to be <24 h. The virion is 32-34 nm in diameter, and accumulates in the nucleus of host cells. Csp05DNAV has a closed circular ssDNA genome, which includes a partially double-stranded region. Partial sequence analysis revealed that the open reading frame of this virus genome was similar to the putative replicase-related proteins of previously reported diatom viruses that harbor a ssDNA genome; specifically, CsalDNAV, CdebDNAV, ClorDNAV, and CtenDNAV. Based on the genome structure, Csp05DNAV is considered to belong to the genus Bacilladnavirus. As both the host and virus were isolated from Ago Bay, the host-virus system probably is ecologically important in the bay. This finding provides basic information towards elucidating diatom dynamics in coastal waters.
AB - Diatom dynamics in the ocean represents one of the most interesting research themes for marine ecologists. Recent studies have shown the significance of viruses as potential sources of mortality for diatom populations, as well as the more traditional environmental factors. Here, we report the isolation and characterization of a new single- stranded DNA (ssDNA) virus (Csp05DNAV) that causes lysis in Chaetoceros sp. TG07-C28, isolated from the surface water of Ago Bay, Japan. The virus was isolated from the sediments in Ago Bay, and its infection was both lytic and species-specific. The latent period was estimated to be <24 h. The virion is 32-34 nm in diameter, and accumulates in the nucleus of host cells. Csp05DNAV has a closed circular ssDNA genome, which includes a partially double-stranded region. Partial sequence analysis revealed that the open reading frame of this virus genome was similar to the putative replicase-related proteins of previously reported diatom viruses that harbor a ssDNA genome; specifically, CsalDNAV, CdebDNAV, ClorDNAV, and CtenDNAV. Based on the genome structure, Csp05DNAV is considered to belong to the genus Bacilladnavirus. As both the host and virus were isolated from Ago Bay, the host-virus system probably is ecologically important in the bay. This finding provides basic information towards elucidating diatom dynamics in coastal waters.
KW - Bacilladnavirus
KW - Chaetoceros
KW - Diatom
KW - Rod-shaped particle
KW - ssDNA
UR - http://www.scopus.com/inward/record.url?scp=84859447716&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859447716&partnerID=8YFLogxK
U2 - 10.3800/pbr.7.20
DO - 10.3800/pbr.7.20
M3 - Article
VL - 7
SP - 20
EP - 28
JO - Plankton and Benthos Research
JF - Plankton and Benthos Research
SN - 1880-8247
IS - 1
ER -