Evidence map›Paper›PMID 34518545›Full record

ArticleNature communications2021

Prokaryotic viruses impact functional microorganisms in nutrient removal and carbon cycle in wastewater treatment plants.

Yiqiang Chen, Yulin Wang, David Paez-Espino, Martin F Polz, Tong Zhang

Abstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
–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

37 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. Biotechnology revival:Frontiers in microbiology · 2025
    Review
  13. High-throughput single-cell sequencing of activated sludge microbiome.Environmental science and ecotechnology · 2025
    Article
  14. Adaptive expression of phage auxiliary metabolic genes in paddy soils and their contribution toward global carbon sequestration.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  15. Article
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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

5 authors.

Yiqiang ChenEnvironmental Microbiome Engineering and Biotechnology Laboratory, Center for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China.
Yulin WangEnvironmental Microbiome Engineering and Biotechnology Laboratory, Center for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China.ORCID 0000-0002-9899-7712
David Paez-EspinoDepartment of Energy, Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.ORCID 0000-0002-2939-5398
Martin F PolzDepartment of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.ORCID 0000-0001-9296-3733
Tong ZhangEnvironmental Microbiome Engineering and Biotechnology Laboratory, Center for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China. zhangt@hku.hk.ORCID 0000-0003-1148-4322

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As one of the largest biotechnological applications, activated sludge (AS) systems in wastewater treatment plants (WWTPs) harbor enormous viruses, with 10-1,000-fold higher concentrations than in natural environments. However, the compositional variation and host-connections of AS viruses remain poorly explored. Here, we report a catalogue of ~50,000 prokaryotic viruses from six WWTPs, increasing the number of described viral species of AS by 23-fold, and showing the very high viral diversity which is largely unknown (98.4-99.6% of total viral contigs). Most viral genera are represented in more than one AS system with 53 identified across all. Viral infection widely spans 8 archaeal and 58 bacterial phyla, linking viruses with aerobic/anaerobic heterotrophs, and other functional microorganisms controlling nitrogen/phosphorous removal. Notably, Mycobacterium, notorious for causing AS foaming, is associated with 402 viral genera. Our findings expand the current AS virus catalogue and provide reference for the phage treatment to control undesired microorganisms in WWTPs.

Indexed as

Carbon CycleArchaeaBacteriaEnergy MetabolismGenes, ViralGenetic VariationHost-Pathogen InteractionsOpen Reading FramesProkaryotic CellsSequence Analysis, DNASewageViromeVirusesWater PurificationSewage

Identifiers

PMID34518545
PMCPMC8438041

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.