Evidence map›Paper›PMID 26431975›Full record

ArticleApplied and environmental microbiology2015

Metabolic response of Clostridium ljungdahlii to oxygen exposure.

Jason M Whitham, Oscar Tirado-Acevedo, Mari S Chinn, Joel J Pawlak, Amy M Grunden

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

19 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Biome-specific distribution of Ni-containing carbon monoxide dehydrogenases.Extremophiles : life under extreme conditions · 2022
    Article
  6. Review
  7. Sporulation in solventogenic and acetogenic clostridia.Applied microbiology and biotechnology · 2021
    Review
  8. Article
  9. Review
  10. The Metabolism ofFrontiers in bioengineering and biotechnology · 2020
    Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. 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 at 1 institution in 1 country.

Jason M WhithamDepartment of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina, USA.
Oscar Tirado-AcevedoDepartment of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina, USA.
Mari S ChinnDepartment of Biological and Agricultural Engineering, North Carolina State University, Raleigh, North Carolina, USA.
Joel J PawlakDepartment of Forest Biomaterials, North Carolina State University, Raleigh, North Carolina, USA.
Amy M GrundenDepartment of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina, USA amy_grunden@ncsu.edu.
North Carolina State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Clostridium ljungdahlii is an important synthesis gas-fermenting bacterium used in the biofuels industry, and a preliminary investigation showed that it has some tolerance to oxygen when cultured in rich mixotrophic medium. Batch cultures not only continue to grow and consume H2, CO, and fructose after 8% O2 exposure, but fermentation product analysis revealed an increase in ethanol concentration and decreased acetate concentration compared to non-oxygen-exposed cultures. In this study, the mechanisms for higher ethanol production and oxygen/reactive oxygen species (ROS) detoxification were identified using a combination of fermentation, transcriptome sequencing (RNA-seq) differential expression, and enzyme activity analyses. The results indicate that the higher ethanol and lower acetate concentrations were due to the carboxylic acid reductase activity of a more highly expressed predicted aldehyde oxidoreductase (CLJU_c24130) and that C. ljungdahlii's primary defense upon oxygen exposure is a predicted rubrerythrin (CLJU_c39340). The metabolic responses of higher ethanol production and oxygen/ROS detoxification were found to be linked by cofactor management and substrate and energy metabolism. This study contributes new insights into the physiology and metabolism of C. ljungdahlii and provides new genetic targets to generate C. ljungdahlii strains that produce more ethanol and are more tolerant to syngas contaminants.

Indexed as

AcetatesAldehyde OxidoreductasesBase SequenceBiofuelsBioreactorsCarbon DioxideClostridiumDNA, BacterialEnergy MetabolismEthanolFermentationGene ExpressionMolecular Sequence DataOxidation-ReductionOxidoreductasesOxygenAcetatesAldehyde OxidoreductasesBiofuelsCarbon Dioxidecarboxylic acid reductaseDNA, BacterialEthanolOxidoreductasesOxygenReactive Oxygen Species

Identifiers

PMID26431975
PMCPMC4644658
OpenAlexW2288696301

What OpenQuestion holds

Textmetadata
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.