Evidence map›Paper›PMID 17165120›Full record

ArticleMicrobial ecology2007

Abundance, diversity, and dynamics of viruses on microorganisms in activated sludge processes.

Kenichi Otawa, Sang Hyon Lee, Atsushi Yamazoe, Motoharu Onuki, Hiroyasu Satoh, Takashi Mino

Abstract read
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In one paragraph

Article in Microbial ecology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Expansion ofViruses · 2023
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Bacteriophage ecology in biological wastewater treatment systems.Applied microbiology and biotechnology · 2021
    Review
  14. Article
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Kenichi OtawaInstitute of Environmental Studies, School of Frontier Sciences, University of Tokyo, Room 670, Environment Building, Kashiwanoha 5-1-5, Kashiwa, Chiba, 277-8563, Japan.
Sang Hyon Lee
Atsushi Yamazoe
Motoharu Onuki
Hiroyasu Satoh
Takashi Mino

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We examined the abundance of viruses on microorganisms in activated sludge and the dynamics of their community structure. Direct counting with epifluorescence microscopy and pulsed-field gel electrophoresis (PFGE) were applied to 20 samples from 14 full-scale wastewater treatment plants (wwtps) treating municipal, industrial, or animal wastewater. Furthermore, to observe the dynamics of viral community structure over time, a laboratory-scale sequencing batch reactor was operated for 58 days. The concentrations of virus particles in the wwtps, as quantified by epifluorescence microscopy, ranged from 4.2 x 10(7) to 3.0 x 10(9) mL-1. PFGE, improved by the introduction of a higher concentration of Tris-EDTA buffer in the DNA extraction step, was successfully used to profile DNA viruses in the activated sludge. Most of the samples from different wwtps commonly had bands in the 40-70 kb range. In the monitoring of viral DNA size distribution in the laboratory-scale reactor, some bands were observed stably throughout the experimental period, some emerged during the operation, and others disappeared. Rapid emergence and disappearance of two intense bands within 6 days was observed. Our data suggest that viruses--especially those associated with microorganisms--are abundant and show dynamic behavior in activated sludge.

Indexed as

AnimalsBacteriaBacteriophagesColony Count, MicrobialDNA, ViralEcosystemElectrophoresis, Gel, Pulsed-FieldFresh WaterHumansMicroscopy, FluorescenceSewageWaste Disposal, FluidWater PurificationDNA, ViralSewage

Identifiers

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.