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  Whiteflies interfere with indirect plant defense against spider mites in Lima bean

Zhang, P.-J., Zheng, S.-J., Loon, V., Boland, W., David, A., Mumm, R., et al. (2009). Whiteflies interfere with indirect plant defense against spider mites in Lima bean. Proceedings of the National Academy of Sciences of the United States of America, 106(50), 21202-21207. doi:10.1073/pnas.0907890106.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0012-A49E-1 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0001-6DE5-3
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 Urheber:
Zhang, Peng-Jun, Autor
Zheng, Si-Jun, Autor
Loon, Van, Autor
Boland, Wilhelm1, Autor           
David, Anja1, Autor           
Mumm, Roland, Autor
Dicke, Marcel, Autor
Affiliations:
1Department of Bioorganic Chemistry, MPI for Chemical Ecology, Max Planck Society, ou_24028              

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 Zusammenfassung: Plants under herbivore attack are able to initiate indirect defense by synthesizing and releasing complex blends of volatiles that attract natural enemies of the herbivore. However, little is known about how plants respond to infestation by multiple herbivores, particularly if these belong to different feeding guilds. Here, we report the interference by a phloem-feeding insect, the whitefly Bemisia tabaci, with indirect plant defenses induced by spider mites (Tetranychus urticae) in Lima bean (Phaseolus lunatus) plants. Additional whitefly infestation of spider-mite infested plants resulted in a reduced attraction of predatory mites (Phytoseiulus persimilis) compared to attraction to plants infested by spider mites only. This interference is shown to result from the reduction in (E)-β-ocimene emission from plants infested by both spider mites and whiteflies. When using exogenous salicylic acid (SA) application to mimic B. tabaci infestation, we observed similar results in behavioral and chemical analyses. Phytohormone and gene-expression analyses revealed that B. tabaci infestation, as well as SA application, inhibited spider mite-induced jasmonic acid (JA) production and reduced the expression of two JA-regulated genes, one of which encodes for the P. lunatus enzyme β-ocimene synthase that catalyzes the synthesis of (E)-β-ocimene. Remarkably, B. tabaci infestation concurrently inhibited SA production induced by spider mites. We therefore conclude that in dual-infested Lima bean plants the suppression of the JA signaling pathway by whitefly feeding is not due to enhanced SA levels.

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 Datum: 2009
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1073/pnas.0907890106
Anderer: BOL502
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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 (50) Artikelnummer: - Start- / Endseite: 21202 - 21207 Identifikator: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230