Evidence map›Paper›PMID 22106275›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Brassinosteroid control of sex determination in maize.

Thomas Hartwig, George S Chuck, Shozo Fujioka, Antje Klempien, Renate Weizbauer, Devi Prasad V Potluri, Sunghwa Choe, Gurmukh S Johal, Burkhard Schulz

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 134 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
134citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

134 citing papers in PubMed, 1 synthesis or guideline pooled it, 264 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Frontiers in plant science · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Genome-Wide Association Analysis of Fresh Maize.International journal of molecular sciences · 2025
    Article
  14. Review
  15. Article
  16. Integrative mapping in large inbred and hybrid association panels along with an FTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025
    Article
  17. Article
  18. STay tunEd: mutational analysis of theFrontiers in plant science · 2025
    Article
  19. Review
  20. Article

74 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

9 authors at 6 institutions in 4 countries.

Thomas HartwigDepartment of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA.
George S Chuck
Shozo Fujioka
Antje Klempien
Renate Weizbauer
Devi Prasad V Potluri
Sunghwa Choe
Gurmukh S Johal
Burkhard Schulz
University of California, Berkeley · USPurdue University West Lafayette · USAgricultural Research Service · USChicago State University · USRIKEN Advanced Science Institute · JPSeoul National University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Brassinosteroids (BRs) are plant hormones that regulate growth and development. They share structural similarities with animal steroids, which are decisive factors of sex determination. BRs are known to regulate morphogenesis and environmental stress responses, but their involvement in sex determination in plants has been only speculative. We show that BRs control sex determination in maize revealed through characterization of the classical dwarf mutant nana plant1 (na1), which also feminizes male flowers. na1 plants carry a loss-of-function mutation in a DET2 homolog--a gene in the BR biosynthetic pathway. The mutant accumulates the DET2-specific substrate (24R)-24-methylcholest-4-en-3-one with a concomitant decrease of downstream BR metabolites. Treatment of wild-type maize plants with BR biosynthesis inhibitors completely mimicked both dwarf and tasselseed phenotypes of na1 mutants. Tissue-specific na1 expression in anthers throughout their development supports the hypothesis that BRs promote masculinity of the male inflorescence. These findings suggest that, in the monoecious plant maize, BRs have been coopted to perform a sex determination function not found in plants with bisexual flowers.

Indexed as

3-Oxo-5-alpha-Steroid 4-DehydrogenaseAmino Acid SequenceBrassinosteroidsFlowersGene Expression Regulation, DevelopmentalGene Expression Regulation, PlantIn Situ HybridizationMicroscopy, Electron, ScanningMolecular Sequence DataMutationPhenotypePhylogenyPhytosterolsPlant EpidermisPlant LeavesPlant Proteins3-Oxo-5-alpha-Steroid 4-DehydrogenaseBrassinosteroidsPhytosterolsPlant Proteins

Identifiers

PMID22106275
PMCPMC3241820
OpenAlexW2159729657

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.