Evidence map›Paper›PMID 21353558›Full record

ArticleCurrent biology : CB2011

A sensory code for host seeking in parasitic nematodes.

Elissa A Hallem, Adler R Dillman, Annie V Hong, Yuanjun Zhang, Jessica M Yano, Stephanie F DeMarco, Paul W Sternberg

Abstract readComparative Study
In one paragraph

Article in Current biology : CB, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed, 1 pooled it
–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

94 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. FMRFamide-like peptides expand the behavioral repertoire of a densely connected nervous system.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Pooled it
  2. Article
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  16. Chemotaxis ofMicroorganisms · 2023
    Article
  17. Article
  18. Differential processing of a chemosensory cue across life stages sharing the same valence state inProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  19. StringentJournal of nematology · 2023
    Article
  20. Article

34 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

7 authors.

Elissa A HallemHoward Hughes Medical Institute, Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA.
Adler R Dillman
Annie V Hong
Yuanjun Zhang
Jessica M Yano
Stephanie F DeMarco
Paul W Sternberg

Funding

PREDOCTORAL TRAINING IN BIOLOGY AND CHEMISTRYT32GM007616 · NIGMS · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI STERNBERG, PAUL WARREN · 1985 to 2019
$22.9M
Mechanisms of carbon dioxide response in nematodesR00AI085107 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HALLEM, ELISSA ANYON · 2011 to 2012
$487k
Howard Hughes Medical InstituteNIAID NIH HHS R00 AI085107NIGMS NIH HHS T32 GM007616NIGMS NIH HHS T32GM07616
6 · The paper itself

Abstract

Parasitic nematode species often display highly specialized host-seeking behaviors that reflect their specific host preferences. Many such behaviors are triggered by host odors, but little is known about either the specific olfactory cues that trigger these behaviors or the underlying neural circuits. Heterorhabditis bacteriophora and Steinernema carpocapsae are phylogenetically distant insect-parasitic nematodes whose host-seeking and host-invasion behavior resembles that of some devastating human- and plant-parasitic nematodes. We compare the olfactory responses of Heterorhabditis and Steinernema infective juveniles (IJs) to those of Caenorhabditis elegans dauers, which are analogous life stages. The broad host range of these parasites results from their ability to respond to the universally produced signal carbon dioxide (CO(2)), as well as a wide array of odors, including host-specific odors that we identified using thermal desorption-gas chromatography-mass spectroscopy. We find that CO(2) is attractive for the parasitic IJs and C. elegans dauers despite being repulsive for C. elegans adults, and we identify a sensory neuron that mediates CO(2) response in both parasitic and free-living species, regardless of whether CO(2) is attractive or repulsive. The parasites' odor response profiles are more similar to each other than to that of C. elegans despite their greater phylogenetic distance, likely reflecting evolutionary convergence to insect parasitism.

Indexed as

Biological EvolutionOdorantsPhylogenyAnimalsBase SequenceBayes TheoremCarbon DioxideChemotaxisGas Chromatography-Mass SpectrometryHost-Parasite InteractionsInsectaLife Cycle StagesLikelihood FunctionsModels, GeneticMolecular Sequence DataRhabditidaCarbon DioxideRNA, Ribosomal

Identifiers

PMID21353558
PMCPMC3152378

What OpenQuestion holds

Textmetadata
LicenceTDM
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.