An herbivore elicitor activates the gene for indole emission in maize

Monika Frey, Cornelia Stettner, Paul W. Paré, Eric A. Schmelz, James Homer Tumlinson, III, Alfons Gierl

Research output: Contribution to journalArticle

187 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)14801-14806
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume97
Issue number26
DOIs
StatePublished - Dec 19 2000

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Herbivory
Zea mays
Tryptophan Synthase
Genes
Lyases
Beta vulgaris
Terpenes
Enzymes
Glutamine
Cues
Sequence Analysis
Fatty Acids
volicitin
indole

All Science Journal Classification (ASJC) codes

  • General

Cite this

Frey, Monika ; Stettner, Cornelia ; Paré, Paul W. ; Schmelz, Eric A. ; Tumlinson, III, James Homer ; Gierl, Alfons. / An herbivore elicitor activates the gene for indole emission in maize. In: Proceedings of the National Academy of Sciences of the United States of America. 2000 ; Vol. 97, No. 26. pp. 14801-14806.
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An herbivore elicitor activates the gene for indole emission in maize. / Frey, Monika; Stettner, Cornelia; Paré, Paul W.; Schmelz, Eric A.; Tumlinson, III, James Homer; Gierl, Alfons.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 97, No. 26, 19.12.2000, p. 14801-14806.

Research output: Contribution to journalArticle

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