Evidence map›Paper›PMID 24298976›Full record

ArticleMolecular plant pathology2014

Alterations in the predicted regulatory and coding regions of the sterol 14α-demethylase gene (CYP51) confer decreased azole sensitivity in the oilseed rape pathogen Pyrenopeziza brassicae.

Helen E Carter, Bart A Fraaije, Jonathan S West, Steven L Kelly, Andreas Mehl, Michael W Shaw, Hans J Cools

Open access · bronzeAbstract read
In one paragraph

Article in Molecular plant pathology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.0field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 67 citations in OpenAlex.

  1. Article
  2. Sensitivity, Resistance Risk Assessment ofJournal of fungi (Basel, Switzerland) · 2026
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  3. Applied and environmental microbiology · 2025
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  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Azole Use in Agriculture, Horticulture, and Wood Preservation - Is It Indispensable?Frontiers in cellular and infection microbiology · 2021
    Review
  13. A Cyp51B Mutation Contributes to Azole Resistance inJournal of fungi (Basel, Switzerland) · 2020
    Article
  14. Article
  15. Article
  16. The Multi-Fungicide Resistance Status ofFrontiers in microbiology · 2020
    Article
  17. The evolutionary origins of pesticide resistance.Biological reviews of the Cambridge Philosophical Society · 2019
    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

7 authors at 4 institutions in 2 countries.

Helen E CarterDepartment of Biological Chemistry and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK.
Bart A Fraaije
Jonathan S West
Steven L Kelly
Andreas Mehl
Michael W Shaw
Hans J Cools
Rothamsted Research · GBBayer (Germany) · DESwansea University · GBUniversity of Reading · GB

Funding

Biotechnology and Biological Sciences Research Council
6 · The paper itself

Abstract

The incidence and severity of light leaf spot epidemics caused by the ascomycete fungus Pyrenopeziza brassicae on UK oilseed rape crops are increasing. The disease is currently controlled by a combination of host resistance, cultural practices and fungicide applications. We report decreases in sensitivity of modern UK P. brassicae isolates to the azole (imidazole and triazole) class of fungicides. By cloning and sequencing the P. brassicae CYP51 (PbCYP51) gene, encoding the azole target sterol 14α-demethylase, we identified two non-synonymous mutations encoding substitutions G460S and S508T associated with reduced azole sensitivity. We confirmed the impact of the encoded PbCYP51 changes on azole sensitivity and protein activity by heterologous expression in a Saccharomyces cerevisiae mutant YUG37:erg11 carrying a controllable promoter of native CYP51 expression. In addition, we identified insertions in the predicted regulatory regions of PbCYP51 in isolates with reduced azole sensitivity. The presence of these insertions was associated with enhanced transcription of PbCYP51 in response to subinhibitory concentrations of the azole fungicide tebuconazole. Genetic analysis of in vitro crosses of sensitive and resistant isolates confirmed the impact of PbCYP51 alterations in coding and regulatory sequences on a reduced sensitivity phenotype, as well as identifying a second major gene at another locus contributing to resistance in some isolates. The least sensitive field isolates carry combinations of upstream insertions and non-synonymous mutations, suggesting that PbCYP51 evolution is ongoing and the progressive decline in azole sensitivity of UK P. brassicae populations will continue. The implications for the future control of light leaf spot are discussed.

Indexed as

AscomycotaAzolesDrug Resistance, FungalFungicides, IndustrialAzolesFungicides, Industrialdemethylation inhibitorsfungicide resistancelight leaf spotP450target site mutation

Identifiers

PMID24298976
PMCPMC6638911
OpenAlexW2134057221

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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.