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Article

The Gram-Positive Bacterium Leuconostoc pseudomesenteroides Shows Insecticidal Activity against Drosophilid and Aphid Pests

1
Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, D-35394 Giessen, Germany
2
Institute for Insect Biotechnology, Justus-Liebig University of Giessen, Heinrich-Buff-Ring 26, D-35392 Giessen, Germany
*
Author to whom correspondence should be addressed.
Insects 2020, 11(8), 471; https://doi.org/10.3390/insects11080471
Received: 27 May 2020 / Revised: 8 July 2020 / Accepted: 20 July 2020 / Published: 25 July 2020
Insect pests reduce global crop yields by up to 20%, but the most effective control measures are currently based on environmentally hazardous chemical pesticides. An alternative, ecologically beneficial pest-management strategy involves the use of microbial pathogens (or active compounds and extracts derived from them) that naturally target selected insect pests. A novel strain of the bacterium Leuconostoc pseudomesenteroides showed promising activity in our preliminary tests. Here, we investigated its effects in more detail, focusing on drosophilid and aphid pests by testing the survival of two species representing the family Drosophilidae (Drosophila suzukii and D. melanogaster) and one representing the family Aphididae (Acyrthosiphon pisum). We used oral and septic infection models to administer living bacteria or cell-free extracts to adult flies and aphid nymphs. We found that infection with living bacteria significantly reduced the survival of our insect models, whereas the administration of cell-free extracts had a significant effect only in aphids. These results confirm that L. pseudomesenteroides has potential as a new biocontrol agent for sustainable pest management. View Full-Text
Keywords: invasive species; insect pests; biological control; Leuconostoc spp. invasive species; insect pests; biological control; Leuconostoc spp.
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MDPI and ACS Style

Hiebert, N.; Kessel, T.; Skaljac, M.; Spohn, M.; Vilcinskas, A.; Lee, K.-Z. The Gram-Positive Bacterium Leuconostoc pseudomesenteroides Shows Insecticidal Activity against Drosophilid and Aphid Pests. Insects 2020, 11, 471. https://doi.org/10.3390/insects11080471

AMA Style

Hiebert N, Kessel T, Skaljac M, Spohn M, Vilcinskas A, Lee K-Z. The Gram-Positive Bacterium Leuconostoc pseudomesenteroides Shows Insecticidal Activity against Drosophilid and Aphid Pests. Insects. 2020; 11(8):471. https://doi.org/10.3390/insects11080471

Chicago/Turabian Style

Hiebert, Nils, Tobias Kessel, Marisa Skaljac, Marius Spohn, Andreas Vilcinskas, and Kwang-Zin Lee. 2020. "The Gram-Positive Bacterium Leuconostoc pseudomesenteroides Shows Insecticidal Activity against Drosophilid and Aphid Pests" Insects 11, no. 8: 471. https://doi.org/10.3390/insects11080471

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