No evidence of modulation of indirect plant resistance of Brassica rapa plants by volatiles from soil-borne fungi
| Autor: | Kay Moisan, Jos M. Raaijmakers, Marcel Dicke, Alexandre Villela, Dani Lucas-Barbosa, Viviane Cordovez, Liana O. Greenberg |
|---|---|
| Přispěvatelé: | Microbial Ecology (ME) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
predators media_common.quotation_subject Insect Biology 010603 evolutionary biology 01 natural sciences HIPVs Parasitoids Predators Recruitment Predation Brassica rapa Botany Laboratory of Entomology Plan_S-Compliant_TA media_common Larva Herbivore Pieris brassicae Ecology fungi national food and beverages Cotesia glomerata biology.organism_classification PE&RC Laboratorium voor Entomologie parasitoids Colonisation 010602 entomology recruitment Insect Science EPS |
| Zdroj: | Ecological Entomology, 45(5), 1200-1211 Ecological Entomology 45 (2020) 5 Ecological Entomology, 45(5), 1200-1211. John Wiley and Sons Ltd Ecological entomology, 45 (5) |
| ISSN: | 0307-6946 1365-2311 |
| Popis: | Upon herbivory, plants emit specific herbivore-induced plant volatiles (HIPVs) that can attract natural enemies of the herbivore thus serving as indirect plant resistance. Not only insect herbivores, but microorganisms may also affect HIPV emission before or after plant colonisation, which in turn can affect behaviour of natural enemies of the herbivore. Yet, it remains elusive whether volatiles from microorganisms influence HIPV emission and indirect plant resistance. In this study, we investigated whether exposure of Brassica rapa roots to volatiles from soil-borne fungi influence HIPV emission and the recruitment of natural enemies of Pieris brassicae larvae. Using a two-compartment pot system, we performed greenhouse and common-garden experiments, and we profiled plant HIPV emission. We found that exposure of plant roots to fungal volatiles did not affect the number of P. brassicae larvae recollected from the plants, suggesting a neutral effect of the fungal volatiles on natural predation. Likewise, in a greenhouse, similar numbers of larvae were parasitised by Cotesia glomerata wasps on control plants as on fungal volatile-exposed plants. Additionally, chemical analysis of HIPV profiles revealed no qualitative and quantitative differences between control plants and fungal volatile-exposed plants that were both infested with P. brassicae larvae. Together, our data indicate that root exposure to fungal volatiles did not affect indirect plant resistance to an insect herbivore. These findings provide new insight into the influence of indirect plant resistance by fungal volatiles that are discussed together with the effects of fungal volatiles on direct plant resistance. Ecological entomology, 45 (5) ISSN:0307-6946 ISSN:1365-2311 |
| Databáze: | OpenAIRE |
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