Evidence map›Paper›PMID 33854089›Full record

ArticleScientific reports2021

The absence of the caffeine synthase gene is involved in the naturally decaffeinated status of Coffea humblotiana, a wild species from Comoro archipelago.

Nathalie Raharimalala, Stephane Rombauts, Andrew McCarthy, Andréa Garavito, Simon Orozco-Arias, Laurence Bellanger, Alexa Yadira Morales-Correa, Solène Froger, Stéphane Michaux, Victoria Berry and 10 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
7.9field-weighted citation impact, top 2% 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

21 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
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  9. Genome mining of metabolic gene clusters in the Rubiaceae family.Computational and structural biotechnology journal · 2024
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  10. Evolution of the biochemistry underpinning purine alkaloid metabolism in plants.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
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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

20 authors at 8 institutions in 6 countries.

Nathalie Raharimalala *Centre National de Recherche Appliquée au Développement Rural, BP 1444, 101, Ambatobe, Antananarivo, Madagascar.
Stephane Rombauts *Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium.
Andrew McCarthyEuropean Molecular Biology Laboratory, 71 Avenue des Martyrs, CS 90181, 38042, Grenoble Cedex 9, France.
Andréa GaravitoDepartamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Manizales, Colombia.
Simon Orozco-AriasDepartment of Systems and Informatics, Universidad de Caldas, Manizales, Colombia.
Laurence BellangerNestle Research-Plant Science Research Unit, BP 49716, 37097, Tours Cedex 2, France.
Alexa Yadira Morales-CorreaDepartamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas, Manizales, Colombia.
Solène FrogerNestle Research-Plant Science Research Unit, BP 49716, 37097, Tours Cedex 2, France.
Stéphane MichauxNestle Research-Plant Science Research Unit, BP 49716, 37097, Tours Cedex 2, France.
Victoria BerryNestle Research-Plant Science Research Unit, BP 49716, 37097, Tours Cedex 2, France.
Sylviane MetaironNestle Research, Société des Produits Nestlé SA, 1015, Lausanne, Switzerland.
Coralie FournierNestle Research, Société des Produits Nestlé SA, 1015, Lausanne, Switzerland.
Maud LepelleyNestle Research-Plant Science Research Unit, BP 49716, 37097, Tours Cedex 2, France.
Lukas MuellerBoyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY, 14853, USA.
Emmanuel CouturonInstitut de Recherche pour le Développement, UMR DIADE, Université de Montpellier, Montpellier, France.
Perla HamonInstitut de Recherche pour le Développement, UMR DIADE, Université de Montpellier, Montpellier, France.
Jean-Jacques RakotomalalaCentre National de Recherche Appliquée au Développement Rural, BP 1444, 101, Ambatobe, Antananarivo, Madagascar.
Patrick DescombesNestle Research, Société des Produits Nestlé SA, 1015, Lausanne, Switzerland.
Romain GuyotUniversidad Autónoma de Manizales, Manizales, Colombia. romain.guyot@ird.fr.
Dominique CrouzillatNestle Research-Plant Science Research Unit, BP 49716, 37097, Tours Cedex 2, France. dominique.crouzillat@rdto.nestle.com.
Nestlé (France) · FRNestlé (Switzerland) · CHUniversité de Montpellier · FRUniversity of Caldas · COCentre National de la Recherche Appliquée au Developpement Rural · MGCornell University · USEuropean Molecular Biology Laboratory · FRGhent University · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Caffeine is the most consumed alkaloid stimulant in the world. It is synthesized through the activity of three known N-methyltransferase proteins. Here we are reporting on the 422-Mb chromosome-level assembly of the Coffea humblotiana genome, a wild and endangered, naturally caffeine-free, species from the Comoro archipelago. We predicted 32,874 genes and anchored 88.7% of the sequence onto the 11 chromosomes. Comparative analyses with the African Robusta coffee genome (C. canephora) revealed an extensive genome conservation, despite an estimated 11 million years of divergence and a broad diversity of genome sizes within the Coffea genus. In this genome, the absence of caffeine is likely due to the absence of the caffeine synthase gene which converts theobromine into caffeine through an illegitimate recombination mechanism. These findings pave the way for further characterization of caffeine-free species in the Coffea genus and will guide research towards naturally-decaffeinated coffee drinks for consumers.

Indexed as

Amino Acid SequenceCaffeineChromosomes, PlantCoffeaComorosComparative Genomic HybridizationEvolution, MolecularMethyltransferasesPhylogenyPlant LeavesPlant ProteinsSequence AlignmentSequence Analysis, RNATheobromineCaffeinecaffeine synthaseMethyltransferasesPlant ProteinsTheobromine

Identifiers

PMID33854089
PMCPMC8046976
OpenAlexW3154408686

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.