Evidence map›Paper›PMID 26438854›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Contribution of cyanobacterial alkane production to the ocean hydrocarbon cycle.

David J Lea-Smith, Steven J Biller, Matthew P Davey, Charles A R Cotton, Blanca M Perez Sepulveda, Alexandra V Turchyn, David J Scanlan, Alison G Smith, Sallie W Chisholm, Christopher J Howe

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
6.1field-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

74 citing papers in PubMed, 202 citations in OpenAlex.

  1. Article
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  8. Generalization of Classification of AlkB Family Alkane Monooxygenases fromInternational journal of molecular sciences · 2025
    Article
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  12. Review
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  17. Structure and Function of Alkane Monooxygenase (AlkB).Accounts of chemical research · 2023
    Review
  18. Article
  19. Article
  20. Article

14 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

David J Lea-SmithDepartment of Biochemistry, University of Cambridge, Cambridge CB2 1QW, United Kingdom; djl63@cam.ac.uk.
Steven J BillerDepartment of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139;
Matthew P DaveyDepartment of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, United Kingdom;
Charles A R CottonDepartment of Biochemistry, University of Cambridge, Cambridge CB2 1QW, United Kingdom;
Blanca M Perez SepulvedaSchool of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom;
Alexandra V TurchynDepartment of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, United Kingdom;
David J ScanlanSchool of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom;
Alison G SmithDepartment of Plant Sciences, University of Cambridge, Cambridge CB2 3EA, United Kingdom;
Sallie W ChisholmDepartment of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139.
Christopher J HoweDepartment of Biochemistry, University of Cambridge, Cambridge CB2 1QW, United Kingdom;
University of Cambridge · GBMassachusetts Institute of Technology · USUniversity of Warwick · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hydrocarbons are ubiquitous in the ocean, where alkanes such as pentadecane and heptadecane can be found even in waters minimally polluted with crude oil. Populations of hydrocarbon-degrading bacteria, which are responsible for the turnover of these compounds, are also found throughout marine systems, including in unpolluted waters. These observations suggest the existence of an unknown and widespread source of hydrocarbons in the oceans. Here, we report that strains of the two most abundant marine cyanobacteria, Prochlorococcus and Synechococcus, produce and accumulate hydrocarbons, predominantly C15 and C17 alkanes, between 0.022 and 0.368% of dry cell weight. Based on global population sizes and turnover rates, we estimate that these species have the capacity to produce 2-540 pg alkanes per mL per day, which translates into a global ocean yield of ∼ 308-771 million tons of hydrocarbons annually. We also demonstrate that both obligate and facultative marine hydrocarbon-degrading bacteria can consume cyanobacterial alkanes, which likely prevents these hydrocarbons from accumulating in the environment. Our findings implicate cyanobacteria and hydrocarbon degraders as key players in a notable internal hydrocarbon cycle within the upper ocean, where alkanes are continually produced and subsequently consumed within days. Furthermore we show that cyanobacterial alkane production is likely sufficient to sustain populations of hydrocarbon-degrading bacteria, whose abundances can rapidly expand upon localized release of crude oil from natural seepage and human activities.

Indexed as

AlkanesBacteriaBiodegradation, EnvironmentalEcosystemGas Chromatography-Mass SpectrometryHumansHydrocarbonsOceans and SeasPetroleumProchlorococcusSeawaterSynechococcusAlkanesHydrocarbonsPetroleumcyanobacteriahydrocarbon cyclehydrocarbon-degrading bacteriahydrocarbonsoil remediation

Identifiers

PMID26438854
PMCPMC4640736
OpenAlexW1939849570

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.