Evidence map›Paper›PMID 20305664›Full record

ArticleNature genetics2010

Rare genetic variation at Zea mays crtRB1 increases beta-carotene in maize grain.

Jianbing Yan, Catherine Bermudez Kandianis, Carlos E Harjes, Ling Bai, Eun-Ha Kim, Xiaohong Yang, Debra J Skinner, Zhiyuan Fu, Sharon Mitchell, Qing Li and 11 more

Abstract read
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In one paragraph

Article in Nature genetics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 174 papers.

0numbers the graph read from it
0cells of the map it votes in
174citing papers in PubMed
17.6field-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

174 citing papers in PubMed, 476 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Genetic Dissection and Functional Validation ofInternational journal of molecular sciences · 2026
    Article
  5. Article
  6. Review
  7. Advancing provitamin A biofortification in sorghum: from allele mining and marker development to prebreeding and breeding.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026
    Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. A Critical Review of Recent Advances in Maize Stress Molecular Biology.International journal of molecular sciences · 2024
    Review
  17. Article
  18. Review
  19. Article
  20. Article

114 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

21 authors at 8 institutions in 3 countries.

Jianbing YanInternational Maize and Wheat Improvement Center, Texcoco, Mexico.
Catherine Bermudez Kandianis
Carlos E Harjes
Ling Bai
Eun-Ha Kim
Xiaohong Yang
Debra J Skinner
Zhiyuan Fu
Sharon Mitchell
Qing Li
Maria G Salas Fernandez
Maria Zaharieva
Raman Babu
Yang Fu
Natalia Palacios
Jiansheng Li
Dean Dellapenna
Thomas Brutnell
Edward S Buckler
Marilyn L Warburton
Torbert Rocheford
China Agricultural University · CNCornell University · USCentro Internacional de Mejoramiento de Maíz Y Trigo · MXMichigan State University · USUniversity of Illinois Urbana-Champaign · USAgricultural Research Service · USIthaca College · USPurdue University West Lafayette · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Breeding to increase beta-carotene levels in cereal grains, termed provitamin A biofortification, is an economical approach to address dietary vitamin A deficiency in the developing world. Experimental evidence from association and linkage populations in maize (Zea mays L.) demonstrate that the gene encoding beta-carotene hydroxylase 1 (crtRB1) underlies a principal quantitative trait locus associated with beta-carotene concentration and conversion in maize kernels. crtRB1 alleles associated with reduced transcript expression correlate with higher beta-carotene concentrations. Genetic variation at crtRB1 also affects hydroxylation efficiency among encoded allozymes, as observed by resultant carotenoid profiles in recombinant expression assays. The most favorable crtRB1 alleles, rare in frequency and unique to temperate germplasm, are being introgressed via inexpensive PCR marker-assisted selection into tropical maize germplasm adapted to developing countries, where it is most needed for human health.

Indexed as

Polymorphism, Geneticbeta CaroteneEdible GrainGene ExpressionGenes, PlantMixed Function OxygenasesMolecular Sequence DataQuantitative Trait LociZea maysbeta Carotenebeta-carotene hydroxylaseMixed Function Oxygenases

Identifiers

PMID20305664
OpenAlexW2124390519

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.