Evidence map›Paper›PMID 19416835›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Transgenic multivitamin corn through biofortification of endosperm with three vitamins representing three distinct metabolic pathways.

Shaista Naqvi, Changfu Zhu, Gemma Farre, Koreen Ramessar, Ludovic Bassie, Jürgen Breitenbach, Dario Perez Conesa, Gaspar Ros, Gerhard Sandmann, Teresa Capell and 1 more

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers.

0numbers the graph read from it
0cells of the map it votes in
133citing papers in PubMed
–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

133 citing papers in PubMed.

  1. Review
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  4. From Structure to Function of Promoters and 5'UTRs in Maize.International journal of molecular sciences · 2026
    Review
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  16. The ascorbate-glutathione cycle coming of age.Journal of experimental botany · 2024
    Review
  17. Article
  18. Article
  19. Article
  20. Review

73 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

11 authors.

Shaista NaqviDepartament de Producció Vegetal i Ciència Forestal, Universitat de Lleida, 25198 Lleida, Spain.
Changfu Zhu
Gemma Farre
Koreen Ramessar
Ludovic Bassie
Jürgen Breitenbach
Dario Perez Conesa
Gaspar Ros
Gerhard Sandmann
Teresa Capell
Paul Christou

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vitamin deficiency affects up to 50% of the world's population, disproportionately impacting on developing countries where populations endure monotonous, cereal-rich diets. Transgenic plants offer an effective way to increase the vitamin content of staple crops, but thus far it has only been possible to enhance individual vitamins. We created elite inbred South African transgenic corn plants in which the levels of 3 vitamins were increased specifically in the endosperm through the simultaneous modification of 3 separate metabolic pathways. The transgenic kernels contained 169-fold the normal amount of beta-carotene, 6-fold the normal amount of ascorbate, and double the normal amount of folate. Levels of engineered vitamins remained stable at least through to the T3 homozygous generation. This achievement, which vastly exceeds any realized thus far by conventional breeding alone, opens the way for the development of nutritionally complete cereals to benefit the world's poorest people.

Indexed as

Food, FortifiedTransgenesAscorbic Acidbeta CaroteneFolic AcidGenetic EngineeringGenetic VectorsGene Transfer TechniquesHomozygoteModels, GeneticPlants, Genetically ModifiedVitamin AVitaminsZea maysAscorbic Acidbeta CaroteneFolic AcidVitamin AVitamins

Identifiers

PMID19416835
PMCPMC2683132

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.