Microorganisms from aphid honeydew attract and enhance the efficacy of natural enemies

Pascal D. Leroy, Ahmed Sabri, Stéphanie Heuskin, Philippe Thonart, Georges Lognay, François J. Verheggen, Frédéric Francis, Yves Brostaux, Gary W. Felton, Eric Haubruge

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

Aphids are one of the most serious pests of crops worldwide, causing major yield and economic losses. To control aphids, natural enemies could be an option but their efficacy is sometimes limited by their dispersal in natural environment. Here we report the first isolation of a bacterium from the pea aphid Acyrthosiphon pisum honeydew, Staphylococcus sciuri, which acts as a kairomone enhancing the efficiency of aphid natural enemies. Our findings represent the first case of a host-associated bacterium driving prey location and ovipositional preference for the natural enemy. We show that this bacterium has a key role in tritrophic interactions because it is the direct source of volatiles used to locate prey. Some specific semiochemicals produced by S. sciuri were also identified as significant attractants and ovipositional stimulants. The use of this host-associated bacterium could certainly provide a novel approach to control aphids in field and greenhouse systems.

Original languageEnglish (US)
Article number348
JournalNature communications
Volume2
Issue number1
DOIs
StatePublished - 2011

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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