Evidence map›Paper›PMID 28915793›Full record

ArticleBMC genomics2017

The cacao Criollo genome v2.0: an improved version of the genome for genetic and functional genomic studies.

X Argout, G Martin, G Droc, O Fouet, K Labadie, E Rivals, J M Aury, C Lanaud

Abstract read
In one paragraph

Article in BMC genomics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

48 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  16. Chromosome-scale genome assembly of Phyllanthus emblica L. 'Yingyu'.DNA research : an international journal for rapid publication of reports on genes and genomes · 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

8 authors.

X ArgoutCIRAD, UMR AGAP, F-34398, Montpellier, France. xavier.argout@cirad.fr.ORCID http://orcid.org/0000-0002-0100-5511
G MartinCIRAD, UMR AGAP, F-34398, Montpellier, France.
G DrocCIRAD, UMR AGAP, F-34398, Montpellier, France.
O FouetCIRAD, UMR AGAP, F-34398, Montpellier, France.
K LabadieCommissariat à l'Energie Atomique (CEA), Institut de Génomique (IG) Genoscope, F-92057, Evry, France.
E RivalsLaboratoire d'Informatique, de Robotique et de Microélectronique de Montpellier (LIRMM), CNRS et Université de Montpellier, 34095, Cedex 5, Montpellier, France.
J M AuryCommissariat à l'Energie Atomique (CEA), Institut de Génomique (IG) Genoscope, F-92057, Evry, France.
C LanaudCIRAD, UMR AGAP, F-34398, Montpellier, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTheobroma cacao L., native to the Amazonian basin of South America, is an economically important fruit tree crop for tropical countries as a source of chocolate. The first draft genome of the species, from a Criollo cultivar, was published in 2011. Although a useful resource, some improvements are possible, including identifying misassemblies, reducing the number of scaffolds and gaps, and anchoring un-anchored sequences to the 10 chromosomes.

methodsWe used a NGS-based approach to significantly improve the assembly of the Belizian Criollo B97-61/B2 genome. We combined four Illumina large insert size mate paired libraries with 52x of Pacific Biosciences long reads to correct misassembled regions and reduced the number of scaffolds. We then used genotyping by sequencing (GBS) methods to increase the proportion of the assembly anchored to chromosomes.

resultsThe scaffold number decreased from 4,792 in assembly V1 to 554 in V2 while the scaffold N50 size has increased from 0.47 Mb in V1 to 6.5 Mb in V2. A total of 96.7% of the assembly was anchored to the 10 chromosomes compared to 66.8% in the previous version. Unknown sites (Ns) were reduced from 10.8% to 5.7%. In addition, we updated the functional annotations and performed a new RefSeq structural annotation based on RNAseq evidence.

conclusionTheobroma cacao Criollo genome version 2 will be a valuable resource for the investigation of complex traits at the genomic level and for future comparative genomics and genetics studies in cacao tree. New functional tools and annotations are available on the Cocoa Genome Hub ( http://cocoa-genome-hub.southgreen.fr ).

Indexed as

CacaoChromosomes, PlantGenome, PlantGenomicsHigh-Throughput Nucleotide SequencingMolecular Sequence AnnotationCriollo B97–61/B2 genomeGBSGenome AssemblyMate Paired sequencesTheobroma cacao

Identifiers

PMID28915793
PMCPMC5603072

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Registered trials

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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.