Evidence map›Paper›PMID 21595964›Full record

ArticleBMC plant biology2011

Agrobacterium-mediated genetic transformation of Coffea arabica (L.) is greatly enhanced by using established embryogenic callus cultures.

Alessandra F Ribas, Eveline Dechamp, Anthony Champion, Benoît Bertrand, Marie-Christine Combes, Jean-Luc Verdeil, Fabienne Lapeyre, Philippe Lashermes, Hervé Etienne

Abstract read
In one paragraph

Article in BMC plant biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing 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

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

  1. Pooled it
  2. Review
  3. Review
  4. Perspectives of Gene Editing for the Conservation of Plant Genetic Resources.Methods in molecular biology (Clifton, N.J.) · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Plants (Basel, Switzerland) · 2023
    Article
  10. An EfficientPlants (Basel, Switzerland) · 2023
    Article
  11. Article
  12. Enhancing drought resistance inFrontiers in plant science · 2023
    Article
  13. Review
  14. Article
  15. Review
  16. Genetic Transformation ofPlants (Basel, Switzerland) · 2022
    Article
  17. Article
  18. Article
  19. Article
  20. Article
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

9 authors.

Alessandra F RibasCentre de Coopération Internationale en Recherche Agronomique pour le Développement-Département des Systèmes Biologiques (CIRAD-BIOS), UMR-RPB (CIRAD, IRD, Université Montpellier II), 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France.
Eveline Dechamp
Anthony Champion
Benoît Bertrand
Marie-Christine Combes
Jean-Luc Verdeil
Fabienne Lapeyre
Philippe Lashermes
Hervé Etienne

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFollowing genome sequencing of crop plants, one of the main challenges today is determining the function of all the predicted genes. When gene validation approaches are used for woody species, the main obstacle is the low recovery rate of transgenic plants from elite or commercial cultivars. Embryogenic calli have frequently been the target tissue for transformation, but the difficulty in producing or maintaining embryogenic tissues is one of the main problems encountered in genetic transformation of many woody plants, including Coffea arabica.

resultsWe identified the conditions required for successful long-term proliferation of embryogenic cultures in C. arabica and designed a highly efficient and reliable Agrobacterium tumefaciens-mediated transformation method based on these conditions. The transformation protocol with LBA1119 harboring pBin 35S GFP was established by evaluating the effect of different parameters on transformation efficiency by GFP detection. Using embryogenic callus cultures, co-cultivation with LBA1119 OD600 = 0.6 for five days at 20 °C enabled reproducible transformation. The maintenance conditions for the embryogenic callus cultures, particularly a high auxin to cytokinin ratio, the age of the culture (optimum for 7-10 months of proliferation) and the use of a yellow callus phenotype, were the most important factors for achieving highly efficient transformation (> 90%). At the histological level, successful transformation was related to the number of proembryogenic masses present. All the selected plants were proved to be transformed by PCR and Southern blot hybridization.

conclusionMost progress in increasing transformation efficiency in coffee has been achieved by optimizing the production conditions of embryogenic cultures used as target tissues for transformation. This is the first time that a strong positive effect of the age of the culture on transformation efficiency was demonstrated. Our results make Agrobacterium-mediated transformation of embryogenic cultures a viable and useful tool both for coffee breeding and for the functional analysis of agronomically important genes.

Indexed as

Gene Transfer TechniquesCinnamatesCoffeaCulture MediaCytokininsDrug Resistance, MicrobialGenes, PlantGenetic VectorsGreen Fluorescent ProteinsHygromycin BIndoleacetic AcidsPhenotypePlants, Genetically ModifiedPlant Somatic Embryogenesis TechniquesRegenerationRhizobiumCinnamatesCulture MediaCytokininsGreen Fluorescent Proteinshygromycin AHygromycin BIndoleacetic Acids

Identifiers

PMID21595964
PMCPMC3111370

What OpenQuestion holds

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LicenceCC BY
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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.