Evidence map›Paper›PMID 32332864›Full record

ArticleThe ISME journal2020

High functional diversity among Nitrospira populations that dominate rotating biological contactor microbial communities in a municipal wastewater treatment plant.

Emilie Spasov, Jackson M Tsuji, Laura A Hug, Andrew C Doxey, Laura A Sauder, Wayne J Parker, Josh D Neufeld

Open access · hybridAbstract read
In one paragraph

Article in The ISME journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
5.6field-weighted citation impact, top 3% of its field
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

48 citing papers in PubMed, 168 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. ComammoxApplied and environmental microbiology · 2024
    Article
  19. Article
  20. Article
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

7 authors at 1 institution in 1 country.

Emilie Spasov *Department of Biology, University of Waterloo, Waterloo, ON, Canada.ORCID http://orcid.org/0000-0002-0496-7759
Jackson M Tsuji *Department of Biology, University of Waterloo, Waterloo, ON, Canada.ORCID http://orcid.org/0000-0001-7244-4709
Laura A HugDepartment of Biology, University of Waterloo, Waterloo, ON, Canada.
Andrew C DoxeyDepartment of Biology, University of Waterloo, Waterloo, ON, Canada.ORCID http://orcid.org/0000-0003-2015-099X
Laura A SauderDepartment of Biology, University of Waterloo, Waterloo, ON, Canada.
Wayne J ParkerDepartment of Civil and Environmental Engineering, University of Waterloo, Waterloo, ON, Canada.
Josh D NeufeldDepartment of Biology, University of Waterloo, Waterloo, ON, Canada. jneufeld@uwaterloo.ca.ORCID http://orcid.org/0000-0002-8722-8571
University of Waterloo · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nitrification, the oxidation of ammonia to nitrate via nitrite, is an important process in municipal wastewater treatment plants (WWTPs). Members of the Nitrospira genus that contribute to complete ammonia oxidation (comammox) have only recently been discovered and their relevance to engineered water treatment systems is poorly understood. This study investigated distributions of Nitrospira, ammonia-oxidizing archaea (AOA), and ammonia-oxidizing bacteria (AOB) in biofilm samples collected from tertiary rotating biological contactors (RBCs) of a municipal WWTP in Guelph, Ontario, Canada. Using quantitative PCR (qPCR), 16S rRNA gene sequencing, and metagenomics, our results demonstrate that Nitrospira species strongly dominate RBC biofilm samples and that comammox Nitrospira outnumber all other nitrifiers. Genome bins recovered from assembled metagenomes reveal multiple populations of comammox Nitrospira with distinct spatial and temporal distributions, including several taxa that are distinct from previously characterized Nitrospira members. Diverse functional profiles imply a high level of niche heterogeneity among comammox Nitrospira, in contrast to the sole detected AOA representative that was previously cultivated and characterized from the same RBC biofilm. Our metagenome bins also reveal two cyanase-encoding populations of comammox Nitrospira, suggesting an ability to degrade cyanate, which has only been shown previously for several Nitrospira representatives that are strict nitrite oxidizers. This study demonstrates the importance of RBCs as model systems for continued investigation of environmental factors that control the distributions and activities of AOB, AOA, comammox Nitrospira, and other nitrite oxidizers.

Indexed as

Biological ProductsMicrobiotaWater PurificationAmmoniaArchaeaBacteriaCanadaNitrificationNitritesOxidation-ReductionRNA, Ribosomal, 16SAmmoniaBiological ProductsNitritesRNA, Ribosomal, 16S

Identifiers

PMID32332864
PMCPMC7305129
OpenAlexW3020476340

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.