Resting spore formation of the marine planktonic diatom Chaetoceros anastomosans induced by high salinity and nitrogen depletion

Oku, Osamu; Kamatani, Akiyoshi

doi:10.1007/s002270050040

Cited by 41 publications

(19 citation statements)

References 15 publications

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“…Similar results have been reported in the relationship between C. debilis and the C. debilis DNA virus (22). The formation of Chaetoceros resting spores are enhanced by nitrogen depletion and other combined factors (4,14), and they may play an important role in survival in various environments. It is unknown what did affect the resting spore formations in the virus-inoculated culture.…”

Section: Resultssupporting

confidence: 85%

Isolation and Characterization of a Single-Stranded RNA Virus Infecting the Bloom-Forming Diatom Chaetoceros socialis

Tomaru

Takao

Suzuki

et al. 2009

Appl Environ Microbiol

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Section: Resultssupporting

confidence: 85%

Isolation and Characterization of a Single-Stranded RNA Virus Infecting the Bloom-Forming Diatom Chaetoceros socialis

Tomaru

Takao

Suzuki

et al. 2009

Appl Environ Microbiol

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“…There might be a strategy of C. lorenzianus for escaping from viral infections. C. lorenzianus is known to form a resting spore (12), which is considered to be significant for a survival during unfavorable conditions (13,23). The spores or resting stage cells of Chaetoceros cf.…”

Section: Resultsmentioning

confidence: 99%

Isolation and Characterization of a Single-Stranded DNA Virus Infecting Chaetoceros lorenzianus Grunow

Tomaru

Takao

Suzuki

et al. 2011

Appl Environ Microbiol

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Diatoms are one of the most significant primary producers in the ocean, and the importance of viruses as a potential source of mortality for diatoms has recently been recognized. Thus far, eight different diatom viruses infecting the genera Rhizosolenia and Chaetoceros have been isolated and characterized to different extents. We report the isolation of a novel diatom virus (ClorDNAV), which causes the lysis of the bloomforming species Chaetoceros lorenzianus, and show its physiological, morphological, and genomic characteristics. The free virion was estimated to be ϳ34 nm in diameter. The arrangement of virus particles appearing in cross-section was basically a random aggregation in the nucleus. Occasionally, distinctive formations such as a ring-like array composed of 9 or 10 spherical virions or a centipede-like array composed of rod-shaped particles were also observed. The latent period and the burst size were estimated to be <48 h and 2.

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“…protuberans (Itakura et al 1993), Chaetoceros pseudocurvisetus (Kuwata et al 1993), and L. danicus (Davis et al 1980;French and Hargraves 1986). Nitrogen depletion has been reported to be the most effective trigger for resting stage formation (Hargraves and French 1983), and Chaetoceros species are known to form resting stage cells (resting spore) under nitrogen depletion (Itakura et al 1993;Kuwata et al 1993;Oku and Kamatani 1997). Conversely, Itakura (2000) suggests that S. costatum cannot form resting cells under nitrogen or phosphate depletion, and its resting cell formation requires certain nutrient concentrations.…”

Section: Phytoplankton Dynamicsmentioning

confidence: 93%

Nutrient and Phytoplankton Dynamics in Harima-Nada, Eastern Seto Inland Sea, Japan During a 35-Year Period from 1973 to 2007

Nishikawa

Hori

Nagai

et al. 2009

Estuaries and Coasts

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Long-term monitoring of water quality and phytoplankton was conducted at 19 sampling stations in Harima-Nada, eastern Seto Inland Sea, Japan for 35 years from 1973 to 2007. There were two significant long-term changes, an increase in winter water temperatures of 0.042°C year −1 , and a decrease in dissolved inorganic nitrogen (DIN) from about 10 μM in the 1970s to~5 μM in the late 1990s due to the reduction in nutrient inputs. DIN concentrations and total phytoplankton cell density were both higher during the 1970s to the early 1980s and then exhibited a significant decrease in the mid 1980s and remained relatively constant thereafter. Diatoms were the dominant phytoplankton group (>90%) over the 35-year period, and there was a dramatic shift from Skeletonema dominance (~70%) to Chaetoceros in the mid 1980s. This shift in diatom species may be attributed to differences in the life cycle of Skeletonema and Chaetoceros and the response to the decrease in DIN concentration.

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Resting spore formation of the marine planktonic diatom Chaetoceros anastomosans induced by high salinity and nitrogen depletion

Cited by 41 publications

References 15 publications

Isolation and Characterization of a Single-Stranded RNA Virus Infecting the Bloom-Forming Diatom Chaetoceros socialis

Isolation and Characterization of a Single-Stranded RNA Virus Infecting the Bloom-Forming Diatom Chaetoceros socialis

Isolation and Characterization of a Single-Stranded DNA Virus Infecting Chaetoceros lorenzianus Grunow

Nutrient and Phytoplankton Dynamics in Harima-Nada, Eastern Seto Inland Sea, Japan During a 35-Year Period from 1973 to 2007

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