Two enzymes responsible for the formation of herbivore-induced volatiles of maize, the methyltransferase AAMT1 and the terpene synthase TPS23, are regulated by a similar signal transduction pathway

Lenk, Claudia; Köllner, Tobias G.; Erb, Matthias; Degenhardt, Jörg (2012). Two enzymes responsible for the formation of herbivore-induced volatiles of maize, the methyltransferase AAMT1 and the terpene synthase TPS23, are regulated by a similar signal transduction pathway. Entomologia Experimentalis et Applicata, 144(1), pp. 86-92. Wiley-Blackwell Publishing 10.1111/j.1570-7458.2012.01240.x

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Herbivore-induced volatiles play an important role in the indirect defense of plants. After herbivore damage, volatiles are released from the plant and can attract herbivore enemies that protect the plant from additional damage. The herbivore-induced volatile blend is complex and usually consists of mono- and sesquiterpenes, aromatic compounds, and indole. Although these classes of compounds are generally produced at different times after herbivore damage, the release of the terpene (E)-β-caryophyllene and the aromatic ester methyl anthranilate appear to be tightly coordinated. We have studied the herbivore induction patterns of two terpene synthases from Zea mays L. (Poaceae), TPS23 and TPS10, as well as S-adenosyl-L-methionine:anthranilic acid carboxyl methyltransferases (AAMT1), which are critical for the production of terpenes and anthranilate compounds, respectively. The transcript levels of tps23 and aamt1 displayed the same kinetics after damage by the larvae of Spodoptera littoralis (Boisduval) (Lepidoptera: Noctuidae), and showed the same organ-specific and haplotype-specific expression patterns. Despite its close functional relation to TPS23, the terpene synthase TPS10 is not expressed in roots and does not display the haplotype-specific expression pattern. The results indicate that the same JA-mediated signaling cascade maycontrol the production of both the terpene (E)-β-caryophyllene and aromatic ester methyl anthranilate.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Biotic Interactions
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Erb, Matthias

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0013-8703

Publisher:

Wiley-Blackwell Publishing

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

14 Jul 2015 09:35

Last Modified:

14 Jul 2015 09:35

Publisher DOI:

10.1111/j.1570-7458.2012.01240.x

Uncontrolled Keywords:

sesquiterpene; methyl anthranilate; (E)-β-caryophyllene; Spodoptera littoralis; Diabrotica virgifera; Western corn rootworm; Zea mays; Poaceae;Lepidoptera; Noctuidae; Coleoptera; Chrysomelidae

URI:

https://boris.unibe.ch/id/eprint/70245

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