Evidence map›Paper›PMID 23563967›Full record

ArticleGenome biology and evolution2013

Functional and evolutionary analysis of the genome of an obligate fungal symbiont.

Kevin J Vogel, Nancy A Moran

Open access · goldAbstract read
In one paragraph

Article in Genome biology and evolution, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
6.2field-weighted citation impact, top 4% 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

34 citing papers in PubMed, 68 citations in OpenAlex.

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  5. An endosymbiotic origin of the crimson pigment from the lac insect.Proceedings of the National Academy of Sciences of the United States of America · 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

2 authors at 2 institutions in 1 country.

Kevin J VogelDepartment of Ecology and Evolutionary Biology, University of Arizona, USA. kjvogel@uga.edu
Nancy A Moran
Evolutionary Genomics (United States) · USYale University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nutritional symbionts of insects include some of the most bizarre genomes studied to date, with extremely reduced size, biased base composition, and limited metabolic abilities. A monophyletic group of aphids within the subfamily Cerataphidinae have lost the bacterial symbiont common to all other Aphididae (Buchnera aphidicola), which have been replaced by a eukaryotic one, the yeast-like symbiont (YLS). As symbionts are expected to experience reduced effective population size (Ne) and largely clonal life cycles, we used this system as a model to test the hypothesis that chronically high levels of genetic drift will result in an increase in size of a eukaryotic genome. We sequenced the genome of the YLS of the aphid Cerataphis brasiliensis and observed elevated rates of protein sequence evolution and intron proliferation in YLS orthologs relative to those of its closest-sequenced relative, consistent with predictions. A moderate amount of repetitive DNA was found along with evidence of directed mutation to prevent proliferation of repetitive elements. Despite increased intron numbers, the overall genome structure appears not to have undergone massive expansion and is around 25 Mb in size. Compared with Buchnera, the YLS appears to have a much broader metabolic repertoire, though many gene families have been reduced in the YLS relative to related fungi. The patterns observed in the YLS genome suggest that its symbiotic lifestyle is permissive to intron proliferation and accelerated sequence evolution, though other factors appear to limit its overall genome expansion.

Indexed as

Evolution, MolecularAmino Acid SequenceAnimalsAphidsBuchneraGenetic DriftGenome, FungalIntronsPhylogenySymbiosisYeastsCerataphidinaeeffective population sizeintronsrepeat-induced point mutationyeast-like symbiont

Identifiers

PMID23563967
PMCPMC3673620
OpenAlexW2157147911

What OpenQuestion holds

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LicenceCC BY-NC
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.