Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 290

The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.

An herbivore elicitor activates the gene for indole emission in maize

Open access
Frey, Monika, Stettner, Cornelia, Paré, Paul W., Schmelz, Eric A., Tumlinson, James H., Gierl, Alfons·2000·Proceedings of the National Academy of Sciences

Abstract

Maize and a variety of other plant species release volatile compounds in response to herbivore attack that serve as chemical cues to signal natural enemies of the feeding herbivore. N- (17-hydroxylinolenoyl)- l -glutamine is an elicitor component that has been isolated and chemically characterized from the regurgitant of the herbivore-pest beet armyworm. This fatty acid derivative, referred to as volicitin, triggers the synthesis and release of volatile components, including terpenoids and indole in maize. Here we report on a previously unidentified enzyme, indole-3-glycerol phosphate lyase (IGL), that catalyzes the formation of free indole and is selectively activated by volicitin. IGL's enzymatic properties are similar to BX1, a maize enzyme that serves as the entry point to the secondary defense metabolites DIBOA and DIMBOA. Gene-sequence analysis indicates that Igl and Bx1 are evolutionarily related to the tryptophan synthase alpha subunit.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.260499897

Cites

30 of 30 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 30 references

Cited by

See all 290

Metadata

Authors
Frey, M., Stettner, C., Paré, P. W., Schmelz, E. A., Tumlinson, J. H., & Gierl, A.
Venue
Proceedings of the National Academy of Sciences
Published
2000-12-05
Volume
97
Issue
26
Pages
14801-14806
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2038629676
Cited by
290
References
30
FWCI
24.50
Type
journal article
Language
en
Open access
green

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: An herbivore elicitor activates the gene for indole emission in maize. https://app.cochat.ai/papers/10.1073/pnas.260499897
The paper
Frey, M., Stettner, C., Paré, P. W., Schmelz, E. A., Tumlinson, J. H., & Gierl, A. (2000). An herbivore elicitor activates the gene for indole emission in maize. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.260499897

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.