Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects

Abstract Root-associated entomopathogenic fungi (R-AEF) indirectly influence herbivorous insect performance. However, host plant-R-AEF interactions and R-AEF as biological control agents have been studied independently and without much attention to the potential synergy between these functional trai...

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Autores principales:	Belén Cotes, Gunda Thöming, Carol V. Amaya-Gómez, Ondřej Novák, Christian Nansen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7a83a92dd8d34c13ada7123c203ecb94
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spelling	oai:doaj.org-article:7a83a92dd8d34c13ada7123c203ecb942021-12-02T15:12:47ZRoot-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects10.1038/s41598-020-80123-52045-2322https://doaj.org/article/7a83a92dd8d34c13ada7123c203ecb942020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80123-5https://doaj.org/toc/2045-2322Abstract Root-associated entomopathogenic fungi (R-AEF) indirectly influence herbivorous insect performance. However, host plant-R-AEF interactions and R-AEF as biological control agents have been studied independently and without much attention to the potential synergy between these functional traits. In this study, we evaluated behavioral responses of cabbage root flies [Delia radicum L. (Diptera: Anthomyiidae)] to a host plant (white cabbage cabbage Brassica oleracea var. capitata f. alba cv. Castello L.) with and without the R-AEF Metarhizium brunneum (Petch). We performed experiments on leaf reflectance, phytohormonal composition and host plant location behavior (behavioral processes that contribute to locating and selecting an adequate host plant in the environment). Compared to control host plants, R-AEF inoculation caused, on one hand, a decrease in reflectance of host plant leaves in the near-infrared portion of the radiometric spectrum and, on the other, an increase in the production of jasmonic, (+)-7-iso-jasmonoyl-l-isoleucine and salicylic acid in certain parts of the host plant. Under both greenhouse and field settings, landing and oviposition by cabbage root fly females were positively affected by R-AEF inoculation of host plants. The fungal-induced change in leaf reflectance may have altered visual cues used by the cabbage root flies in their host plant selection. This is the first study providing evidence for the hypothesis that R-AEF manipulate the suitability of their host plant to attract herbivorous insects.Belén CotesGunda ThömingCarol V. Amaya-GómezOndřej NovákChristian NansenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Belén Cotes Gunda Thöming Carol V. Amaya-Gómez Ondřej Novák Christian Nansen Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects
description	Abstract Root-associated entomopathogenic fungi (R-AEF) indirectly influence herbivorous insect performance. However, host plant-R-AEF interactions and R-AEF as biological control agents have been studied independently and without much attention to the potential synergy between these functional traits. In this study, we evaluated behavioral responses of cabbage root flies [Delia radicum L. (Diptera: Anthomyiidae)] to a host plant (white cabbage cabbage Brassica oleracea var. capitata f. alba cv. Castello L.) with and without the R-AEF Metarhizium brunneum (Petch). We performed experiments on leaf reflectance, phytohormonal composition and host plant location behavior (behavioral processes that contribute to locating and selecting an adequate host plant in the environment). Compared to control host plants, R-AEF inoculation caused, on one hand, a decrease in reflectance of host plant leaves in the near-infrared portion of the radiometric spectrum and, on the other, an increase in the production of jasmonic, (+)-7-iso-jasmonoyl-l-isoleucine and salicylic acid in certain parts of the host plant. Under both greenhouse and field settings, landing and oviposition by cabbage root fly females were positively affected by R-AEF inoculation of host plants. The fungal-induced change in leaf reflectance may have altered visual cues used by the cabbage root flies in their host plant selection. This is the first study providing evidence for the hypothesis that R-AEF manipulate the suitability of their host plant to attract herbivorous insects.
format	article
author	Belén Cotes Gunda Thöming Carol V. Amaya-Gómez Ondřej Novák Christian Nansen
author_facet	Belén Cotes Gunda Thöming Carol V. Amaya-Gómez Ondřej Novák Christian Nansen
author_sort	Belén Cotes
title	Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects
title_short	Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects
title_full	Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects
title_fullStr	Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects
title_full_unstemmed	Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects
title_sort	root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/7a83a92dd8d34c13ada7123c203ecb94
work_keys_str_mv	AT belencotes rootassociatedentomopathogenicfungimanipulatehostplantstoattractherbivorousinsects AT gundathoming rootassociatedentomopathogenicfungimanipulatehostplantstoattractherbivorousinsects AT carolvamayagomez rootassociatedentomopathogenicfungimanipulatehostplantstoattractherbivorousinsects AT ondrejnovak rootassociatedentomopathogenicfungimanipulatehostplantstoattractherbivorousinsects AT christiannansen rootassociatedentomopathogenicfungimanipulatehostplantstoattractherbivorousinsects
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Root-associated entomopathogenic fungi manipulate host plants to attract herbivorous insects

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