Evidence map›Paper›PMID 31839451›Full record

ArticleCurrent biology : CB2020

Molecular Logic and Evolution of Bitter Taste in Drosophila.

Hany K M Dweck, John R Carlson

Open access · bronzeAbstract read
In one paragraph

Article in Current biology : CB, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
4.5field-weighted citation impact, top 4% 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

50 citing papers in PubMed, 94 citations in OpenAlex.

  1. Article
  2. A Molecular and Cellular Mechanism for Bitter Taste in the mosquitobioRxiv : the preprint server for biology · 2026
    Article
  3. Molecular bases of insect odorant receptor function: specificity and evolution.Biological reviews of the Cambridge Philosophical Society · 2026
    Review
  4. Article
  5. Article
  6. Review
  7. Iridoids fromMolecules (Basel, Switzerland) · 2025
    Article
  8. Genomic plasticity drives olfactory adaptation in a pest fly.bioRxiv : the preprint server for biology · 2025
    Article
  9. Article
  10. Review
  11. Bitter Sensing ProtectsThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Taste evolution in an herbivorous drosophilid.bioRxiv : the preprint server for biology · 2024
    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

2 authors at 1 institution in 1 country.

Hany K M DweckDepartment of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520, USA.
John R CarlsonDepartment of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520, USA. Electronic address: john.carlson@yale.edu.
Yale University · US

Funding

ANALYSIS OF ODORANT RECEPTOR GENESR01DC004729 · NIDCD · YALE UNIVERSITY · PI John R Carlson · 2001 to 2026
$9.2M
GENETIC AND MOLECULAR ANALYSIS OF OLFACTIONR01DC002174 · NIDCD · YALE UNIVERSITY · PI CARLSON, JOHN R · 1994 to 2024
$8.0M
Analysis of a large family of taste receptorsR01DC011697 · NIDCD · YALE UNIVERSITY · PI John R Carlson · 2011 to 2026
$5.5M
NIDCD NIH HHS R01 DC002174NIDCD NIH HHS R01 DC004729NIDCD NIH HHS R01 DC011697
6 · The paper itself

Abstract

Taste systems detect a vast diversity of toxins, which are perceived as bitter. When a species adapts to a new environment, its taste system must adapt to detect new death threats. We deleted each of six commonly expressed bitter gustatory receptors (Grs) from Drosophila melanogaster. Systematic analysis revealed that requirements for these Grs differed for the same tastant in different neurons and for different tastants in the same neuron. Responses to some tastants in some neurons required four Grs, including Gr39a. Deletions also produced increased or novel responses, supporting a model of Gr-Gr inhibitory interactions. Coexpression of four Grs conferred several bitter responses to a sugar neuron. We then examined bitter coding in three other Drosophila species. We found major evolutionary shifts. One shift depended on the concerted activity of seven Grs. This work shows how the complex logic of bitter coding provides the capacity to detect innumerable hazards and the flexibility to adapt to new ones.

Indexed as

Evolution, MolecularAnimalsDrosophilaDrosophila melanogasterGene DeletionInsect ProteinsReceptors, Cell SurfaceTasteTaste PerceptionInsect ProteinsReceptors, Cell Surfacebitter codingD. erectaDrosophilaD. sechelliaD. simulansevolutiontastetaste receptor

Identifiers

PMID31839451
PMCPMC6946858
OpenAlexW2996087008

What OpenQuestion holds

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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.