| Title: | "Fungal Volatiles as Olfactory Cues for Female Fungus Gnat, Lycoriella ingenua in the Avoidance of Mycelia Colonized Compost" |
| Author(s): | Kecskemeti S; Szelenyi MO; Erdei AL; Geosel A; Fail J; Molnar BP; |
| Address: | "Department of Vegetable and Mushroom Growing, Institute of Sustainable Horticulture, Szent Istvan University, Budapest, Hungary. Department of Zoology, Plant Protection Institute, Centre for Agricultural Research, Eotvos Lorand Research Network, Budapest, Hungary. Department of Entomology, Plant Protection Institute, Szent Istvan University, Budapest, Hungary. Department of Zoology, Plant Protection Institute, Centre for Agricultural Research, Eotvos Lorand Research Network, Budapest, Hungary. molnar.bela.peter@atk.hu" |
| DOI: | 10.1007/s10886-020-01210-5 |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "The chemical signatures emitted by fungal substrates are key components for mycophagous insects in the search for food source or for suitable oviposition sites. These volatiles are usually emitted by the fruiting bodies and mycelia. The volatiles attract fungivorous insects, like flowers attract pollinators; certain flowers mimic the shape of mushroom fruiting bodies and even produce a typical mushroom odor to exploit on fungus-insect mutualism. There are numerous insects which are mycophagous or eat fungi additionally, but only a few are considered a threat in agriculture. Lycoriella ingenua is one of the most serious pests in mushroom cultivation worldwide. Here we attempt to examine the role of environmental volatiles upon behavioral oviposition preference. In two-choice bioassays, fungus gnats preferred uncolonized compost compared to colonized compost but preferred colonized compost against nothing. However, when colonized compost was paired against distilled water, no significant choice was observed. The comparison of fresh casing material and mycelium colonized casing material resulted in no significant preference. From colonized compost headspace, three antennally active volatiles were isolated by gas chromatography coupled with electroantennography and subsequently identified with gas chromatography coupled mass spectrometry as 1-hepten-3-ol, 3-octanone and 1-octen-3-ol. In behavioral assays the addition of said synthetic volatiles to uncolonized compost separately and in combination to mimic colonized compost resulted in avoidance. We thus partially elucidate the role of fungal volatiles in the habitat seeking behavior of Lycoriella ingenua" |
| Keywords: | "Agaricus/*growth & development Animals Behavior, Animal/drug effects *Composting Cues Diptera/*physiology Insect Control/methods Mycelium/*growth & development Olfactory Perception/*physiology Oviposition Volatile Organic Compounds/*chemistry/pharmacology;" |
| Notes: | "MedlineKecskemeti, Sandor Szelenyi, Magdolna Olivia Erdei, Anna Laura Geosel, Andras Fail, Jozsef Molnar, Bela Peter eng NKFIH-1159-6/2019/Higher Education Institutional Excellence Program/ UNKP-19-4/Emberi Eroforrasok Miniszteriuma/ GINOP-2.3.2-15-2016-00061/National Research, Development, and Innovation Office/ GINOP-2.3.2-15-2016-00051/National Research, Development, and Innovation Office/ 2020/10/08 J Chem Ecol. 2020 Oct; 46(10):917-926. doi: 10.1007/s10886-020-01210-5. Epub 2020 Oct 7" |
