Evidence map›Paper›PMID 20890720›Full record

ArticleGenetica2011

The transformer gene of Ceratitis capitata: a paradigm for a conserved epigenetic master regulator of sex determination in insects.

G Saccone, M Salvemini, L C Polito

Abstract read
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In one paragraph

Article in Genetica, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

22 citing papers in PubMed, 54 citations in OpenAlex.

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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

3 authors at 2 institutions in 2 countries.

G SacconeDipartimento delle Scienze Biologiche, Sezione Genetica e Biologia Molecolare, Università degli Studi di Napoli Federico II, Via Mezzocannone 8, 80134, Naples, Italy. giuseppe.saccone@unina.it
M Salvemini
L C Polito
University of Naples Federico II · ITInstituto Biofisika · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The transformer gene in Ceratitis capitata (Cctra(ep)) is the founding member of a family of related SR genes that appear to act as the master epigenetic switch in sex determination in insects. A functional protein seems to be produced only in individuals with a female XX karyotype where it is required to maintain the productive mode of expression through a positive feedback loop and to direct female development by instructing the downstream target genes accordingly. When zygotic activation of this loop is prevented, male development follows. Recently, tra(ep) orthologues were isolated in more distantly related dipteran species including Musca domestica, Glossina morsitans and Lucilia cuprina and in the Hymenopterans Apis mellifera and Nasonia vitripennis. All of these tra(ep) orthologues seem to act as binary switches that govern all aspects of sexual development. Transient silencing leads to complete masculinization of individuals with a female karyotype. Reciprocally, in some systems it has been shown that transient expression of the functional TRA product is sufficient to transactivate the endogenous gene and implement female development in individuals with a male karyotype. Hence, a mechanism based on tra(ep) epigenetic autoregulation seems to represent a common and presumably ancestral single principle of sex determination in Insecta. The results of these studies will not only be important for understanding divergent evolution of basic developmental processes but also for designing new strategies to improve genetic sexing in different insect species of economical or medical importance.

Indexed as

EpigenomicsGenes, RegulatorTransformation, GeneticAlternative SplicingAmino Acid SequenceAnimalsCeratitis capitataDNA-Binding ProteinsDrosophila melanogasterDrosophila ProteinsEvolution, MolecularFemaleGene Expression Regulation, DevelopmentalGene SilencingInsect ProteinsMaleDNA-Binding ProteinsDrosophila ProteinsDSX protein, Drosophilafru protein, DrosophilaInsect ProteinsNerve Tissue ProteinsNuclear ProteinsRibonucleoproteinsRNA-Binding ProteinsSxl protein, Drosophilatra2 protein, DrosophilaTranscription FactorsTra protein, Drosophila

Identifiers

PMID20890720
OpenAlexW2009208217

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.