Evidence map›Paper›PMID 23731509›Full record

ArticleGenome biology2013

The genome sequence of the most widely cultivated cacao type and its use to identify candidate genes regulating pod color.

Juan C Motamayor, Keithanne Mockaitis, Jeremy Schmutz, Niina Haiminen, Donald Livingstone, Omar Cornejo, Seth D Findley, Ping Zheng, Filippo Utro, Stefan Royaert and 20 more

Open access · goldAbstract read
In one paragraph

Article in Genome biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 131 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
131citing papers in PubMed, 1 pooled it
39.8field-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

131 citing papers in PubMed, 1 synthesis or guideline pooled it, 306 citations in OpenAlex.

  1. Pooled it
  2. Adaptive Responses of Tropical Crops: A Multi-Scale Omics Integrated Perspective.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  3. Article
  4. Article
  5. Foods (Basel, Switzerland) · 2026
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Genome-Wide Identification ofPlants (Basel, Switzerland) · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

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

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

30 authors at 11 institutions in 3 countries.

Juan C Motamayor
Keithanne Mockaitis
Jeremy Schmutz
Niina Haiminen
Donald Livingstone
Omar Cornejo
Seth D Findley
Ping Zheng
Filippo Utro
Stefan Royaert
Christopher Saski
Jerry Jenkins
Ram Podicheti
Meixia Zhao
Brian E Scheffler
Joseph C Stack
Frank A Feltus
Guiliana M Mustiga
Freddy Amores
Wilbert Phillips
Jean Philippe Marelli
Gregory D May
Howard Shapiro
Jianxin Ma
Carlos D Bustamante
Raymond J Schnell
Dorrie Main
Don Gilbert
Laxmi Parida
David N Kuhn
Mars (United States) · USUnited States Department of Agriculture · USIndiana University Bloomington · USClemson University · USPurdue University West Lafayette · USStanford University · USWashington State University · USCentro Agronomico Tropical de Investigacion y Ensenanza Catie · CRHudsonAlpha Institute for Biotechnology · USInstituto Nacional de Investigaciones Agropecuarias · ECNational Center for Genome Resources · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTheobroma cacao L. cultivar Matina 1-6 belongs to the most cultivated cacao type. The availability of its genome sequence and methods for identifying genes responsible for important cacao traits will aid cacao researchers and breeders.

resultsWe describe the sequencing and assembly of the genome of Theobroma cacao L. cultivar Matina 1-6. The genome of the Matina 1-6 cultivar is 445 Mbp, which is significantly larger than a sequenced Criollo cultivar, and more typical of other cultivars. The chromosome-scale assembly, version 1.1, contains 711 scaffolds covering 346.0 Mbp, with a contig N50 of 84.4 kbp, a scaffold N50 of 34.4 Mbp, and an evidence-based gene set of 29,408 loci. Version 1.1 has 10x the scaffold N50 and 4x the contig N50 as Criollo, and includes 111 Mb more anchored sequence. The version 1.1 assembly has 4.4% gap sequence, while Criollo has 10.9%. Through a combination of haplotype, association mapping and gene expression analyses, we leverage this robust reference genome to identify a promising candidate gene responsible for pod color variation. We demonstrate that green/red pod color in cacao is likely regulated by the R2R3 MYB transcription factor TcMYB113, homologs of which determine pigmentation in Rosaceae, Solanaceae, and Brassicaceae. One SNP within the target site for a highly conserved trans-acting siRNA in dicots, found within TcMYB113, seems to affect transcript levels of this gene and therefore pod color variation.

conclusionsWe report a high-quality sequence and annotation of Theobroma cacao L. and demonstrate its utility in identifying candidate genes regulating traits.

Indexed as

Gene Expression Regulation, PlantGenes, PlantGenome, PlantQuantitative Trait, HeritableCacaoChromosome MappingChromosomes, PlantColorFruitGenome SizeHigh-Throughput Nucleotide SequencingQuantitative Trait LociRNA, Small InterferingTranscription FactorsTranscription, GeneticRNA, Small InterferingTranscription Factors

Identifiers

PMID23731509
PMCPMC4053823
OpenAlexW2149836365

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.