Volatile organic compounds from entomopathogenic and nematophagous fungi, repel banana black weevil ( Cosmopolites sordidus )
Volatile organic compounds from entomopathogenic and nematophagous fungi, repel banana black weevil ( Cosmopolites sordidus )
Abstract Fungal Volatile Organic Compounds (VOCs) repel banana black weevil (BW), Cosmopolites sordidus (Germar, 1824), the key-pest of banana (Musa spp.). The entomopathogens Beauveria bassiana (Bb1TS11) and Metarhizium robertsii (Mr4TS04) were isolated from banana plantation soils using an insect bait. Bb1TS11 and Mr4TS04 were pathogenic to BW adults. Bb1TS11, Bb203 (from infected palm weevils), Mr4TS04 and the nematophagous fungus Pochonia clamydosporia (Pc123), were tested for VOCs production. VOCs were identified by Gas Chromatography/Mass Spectrometry - Solid-Phase Micro Extraction (GC/MS-SPME). GC/MS-SPME identified a total of 97 VOCs in all strains tested. Seven VOCs (C1 – C7) were selected for their abundance or previous record as insect repellents. BW starved adults in the dark showed the highest mobility to banana corm in olfactometry bioassays. C7, produced by all fungal strains, is the best BW repellent (p<0.05), followed by C5. The rest of VOCs have a milder repellency to BW. C1 and C2 (known to repel palm weevil) block the attraction of banana corm and BW pheromone to BW adults in bioassays. Therefore, VOCs from biocontrol fungi can be used in future studies for biomanagement of BW in the field.
Lopez-Llorca Luis Vicente、Lozano-Soria Ana、Lopez-Moya Federico、Porcelli Francesco、Lopez-Cepero Javier、Picciotti Ugo
Department of Marine Science and Applied Biology, Laboratory of Plant Pathology, University of AlicanteDepartment of Marine Science and Applied Biology, Laboratory of Plant Pathology, University of AlicanteDepartment of Marine Science and Applied Biology, Laboratory of Plant Pathology, University of AlicanteDepartment of Soil, Plant, and Food Sciences - (DiSSPA), University of Bari Aldo MoroTechnical Department of CoplacaDepartment of Marine Science and Applied Biology, Laboratory of Plant Pathology, University of Alicante||Department of Soil, Plant, and Food Sciences - (DiSSPA), University of Bari Aldo Moro||Dyrecta Lab s.r.l.
植物保护生物科学现状、生物科学发展昆虫学
CurculionidaeMusa accuminatainvasive speciespest controlbiological controlVOCsolfactory responsesemiochemicalspheromoneCosmopolites sordidus
Lopez-Llorca Luis Vicente,Lozano-Soria Ana,Lopez-Moya Federico,Porcelli Francesco,Lopez-Cepero Javier,Picciotti Ugo.Volatile organic compounds from entomopathogenic and nematophagous fungi, repel banana black weevil ( Cosmopolites sordidus )[EB/OL].(2025-03-28)[2025-05-26].https://www.biorxiv.org/content/10.1101/2020.07.03.186429.点此复制
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