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  Restoring a maize root signal that attracts insect-killing nematodes to control a major pest

Degenhardt, J., Hiltpold, I., Köllner, T., Frey, M., Gierl, A., Gershenzon, J., et al. (2009). Restoring a maize root signal that attracts insect-killing nematodes to control a major pest. Proceedings of the National Academy of Sciences of the United States of America, 106(32), 13213-13218. doi:10.1073/pnas.0906365106.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0012-A555-C Versions-Permalink: https://hdl.handle.net/21.11116/0000-0001-6DF0-6
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2726344/ (Verlagsversion)
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 Urheber:
Degenhardt, Jörg1, Autor           
Hiltpold, Ivan, Autor
Köllner, Tobias2, Autor           
Frey, Monika, Autor
Gierl, Alfons, Autor
Gershenzon, Jonathan1, Autor           
Hibbard, Bruce E., Autor
Ellersieck, Mark R., Autor
Turlings, Ted C.J., Autor
Affiliations:
1Department of Biochemistry, MPI for Chemical Ecology, Max Planck Society, ou_421893              
2Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society, ou_421893              

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 Zusammenfassung: When attacked by herbivorous insects, plants emit volatile compounds that attract natural enemies of the insects. It has been proposed that these volatile signals can be manipulated to improve crop protection. Here, we demonstrate the full potential of this strategy by restoring the emission of a specific belowground signal emitted by insect-damaged maize roots. The western corn rootworm induces the roots of many maize varieties to emit (E)-β-caryophyllene, which attracts entomopathogenic nematodes that infect and kill the voracious root pest. However, most North American maize varieties have lost the ability to emit (E)-β-caryophyllene and may therefore receive little protection from the nematodes. To restore the signal, a nonemitting maize line was transformed with a (E)-β-caryophyllene synthase gene from oregano, resulting in constitutive emissions of this sesquiterpene. In rootworm-infested field plots in which nematodes were released, the (E)-β-caryophyllene-emitting plants suffered significantly less root damage and had 60% fewer adult beetles emerge than untransformed, nonemitting lines. This demonstration that plant volatile emissions can be manipulated to enhance the effectiveness of biological control agents opens the way for novel and ecologically sound strategies to fight a variety of insect pests.

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 Datum: 2009
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1073/pnas.0906365106
Anderer: GER267
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Titel: Proceedings of the National Academy of Sciences of the United States of America
  Andere : Proceedings of the National Academy of Sciences of the USA
  Andere : Proc. Acad. Sci. U.S.A.
  Kurztitel : PNAS
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington, D.C. : National Academy of Sciences
Seiten: - Band / Heft: 106 (32) Artikelnummer: - Start- / Endseite: 13213 - 13218 Identifikator: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230