Evidence map›Paper›PMID 29234309›Full record

ArticleFrontiers in microbiology2017

Rokubacteria: Genomic Giants among the Uncultured Bacterial Phyla.

Eric D Becraft, Tanja Woyke, Jessica Jarett, Natalia Ivanova, Filipa Godoy-Vitorino, Nicole Poulton, Julia M Brown, Joseph Brown, M C Y Lau, Tullis Onstott and 3 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in microbiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
11.8field-weighted citation impact, top 1% 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

41 citing papers in PubMed, 142 citations in OpenAlex.

  1. Strengthening Integrative Microbiome Research Through Regional Leadership.International journal of environmental research and public health · 2025
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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

13 authors at 6 institutions in 2 countries.

Eric D BecraftBigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.
Tanja WoykeJoint Genome Institute, Walnut Creek, CA, United States.
Jessica JarettJoint Genome Institute, Walnut Creek, CA, United States.
Natalia IvanovaJoint Genome Institute, Walnut Creek, CA, United States.
Filipa Godoy-VitorinoDepartment of Natural Sciences, Inter American University of Puerto Rico, San Juan, Puerto Rico.
Nicole PoultonBigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.
Julia M BrownBigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.
Joseph BrownBigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.
M C Y LauDepartment of Geosciences, Princeton University, Princeton, NJ, United States.
Tullis OnstottDepartment of Geosciences, Princeton University, Princeton, NJ, United States.
Jonathan A EisenCollege of Biological Sciences, Genome Center, University of California, Davis, Davis, CA, United States.
Duane MoserDesert Research Institute, Las Vegas, NV, United States.
Ramunas StepanauskasBigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States.
Bigelow Laboratory for Ocean Sciences · USJoint Genome Institute · USPrinceton University · USDesert Research Institute · USInterAmerican University of Puerto Rico · PRUniversity of California, Davis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent advances in single-cell genomic and metagenomic techniques have facilitated the discovery of numerous previously unknown, deep branches of the tree of life that lack cultured representatives. Many of these candidate phyla are composed of microorganisms with minimalistic, streamlined genomes lacking some core metabolic pathways, which may contribute to their resistance to growth in pure culture. Here we analyzed single-cell genomes and metagenome bins to show that the "Candidate phylum Rokubacteria," formerly known as SPAM, represents an interesting exception, by having large genomes (6-8 Mbps), high GC content (66-71%), and the potential for a versatile, mixotrophic metabolism. We also observed an unusually high genomic heterogeneity among individual Rokubacteria cells in the studied samples. These features may have contributed to the limited recovery of sequences of this candidate phylum in prior cultivation and metagenomic studies. Our analyses suggest that Rokubacteria are distributed globally in diverse terrestrial ecosystems, including soils, the rhizosphere, volcanic mud, oil wells, aquifers, and the deep subsurface, with no reports from marine environments to date.

Indexed as

microbial dark mattermicrobial ecologymicrobial evolutionmicrobial genomicsuncultivated bacteria

Identifiers

PMID29234309
PMCPMC5712423
OpenAlexW2768904845

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.