Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil

Abstract The eucalyptus snout beetle (ESB), Gonipterus platensis, is endemic to Australia but has become a major invasive, destructive pest of Brazilian eucalyptus plantations. Efforts to develop insecticides based on entomopathogenic fungi against ESB are limited by the lack of known virulent strai...

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Autores principales:	Carolina Jordan, Paula Leite dos Santos, Leiliane Rodrigues dos Santos Oliveira, Mauricio Magalhães Domingues, Bianca Cristina Costa Gêa, Murilo Fonseca Ribeiro, Gabriel Moura Mascarin, Carlos Frederico Wilcken
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c60aa5ac34d948508b00e8e0a325ff73
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spelling	oai:doaj.org-article:c60aa5ac34d948508b00e8e0a325ff732021-12-02T14:25:32ZEntomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil10.1038/s41598-021-86638-92045-2322https://doaj.org/article/c60aa5ac34d948508b00e8e0a325ff732021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86638-9https://doaj.org/toc/2045-2322Abstract The eucalyptus snout beetle (ESB), Gonipterus platensis, is endemic to Australia but has become a major invasive, destructive pest of Brazilian eucalyptus plantations. Efforts to develop insecticides based on entomopathogenic fungi against ESB are limited by the lack of known virulent strains. We therefore explored the virulence of indigenous Brazilian strains of major entomopathogenic fungi—Beauveria spp. and Metarhizium anisopliae—against ESB adults. We found widely varying virulence and later capacities for conidial production on infected adult cadavers. Two strains stood out, B. bassiana IBCB-240 and M. anisopliae IBCB-364, as especially lethal for ESB adults under laboratory conditions, sporulated abundantly on infected insects, and also outperformed comparable strains used in commercial mycoinsecticides. Notably, B. bassiana IBCB-240 exhibited lower LT50 values at low inoculum levels (≤ 107 conidia mL−1) and smaller LC50 values than M. anisopliae IBCB-364. Taken together, this study emphasizes natural variation in virulence among indigenous Beauveria and Metarhizium strains against ESB adults and identifies fungal strains with superior lethality to existing commercialized strains for managing this eucalyptus pest in Brazil.Carolina JordanPaula Leite dos SantosLeiliane Rodrigues dos Santos OliveiraMauricio Magalhães DominguesBianca Cristina Costa GêaMurilo Fonseca RibeiroGabriel Moura MascarinCarlos Frederico WilckenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Carolina Jordan Paula Leite dos Santos Leiliane Rodrigues dos Santos Oliveira Mauricio Magalhães Domingues Bianca Cristina Costa Gêa Murilo Fonseca Ribeiro Gabriel Moura Mascarin Carlos Frederico Wilcken Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil
description	Abstract The eucalyptus snout beetle (ESB), Gonipterus platensis, is endemic to Australia but has become a major invasive, destructive pest of Brazilian eucalyptus plantations. Efforts to develop insecticides based on entomopathogenic fungi against ESB are limited by the lack of known virulent strains. We therefore explored the virulence of indigenous Brazilian strains of major entomopathogenic fungi—Beauveria spp. and Metarhizium anisopliae—against ESB adults. We found widely varying virulence and later capacities for conidial production on infected adult cadavers. Two strains stood out, B. bassiana IBCB-240 and M. anisopliae IBCB-364, as especially lethal for ESB adults under laboratory conditions, sporulated abundantly on infected insects, and also outperformed comparable strains used in commercial mycoinsecticides. Notably, B. bassiana IBCB-240 exhibited lower LT50 values at low inoculum levels (≤ 107 conidia mL−1) and smaller LC50 values than M. anisopliae IBCB-364. Taken together, this study emphasizes natural variation in virulence among indigenous Beauveria and Metarhizium strains against ESB adults and identifies fungal strains with superior lethality to existing commercialized strains for managing this eucalyptus pest in Brazil.
format	article
author	Carolina Jordan Paula Leite dos Santos Leiliane Rodrigues dos Santos Oliveira Mauricio Magalhães Domingues Bianca Cristina Costa Gêa Murilo Fonseca Ribeiro Gabriel Moura Mascarin Carlos Frederico Wilcken
author_facet	Carolina Jordan Paula Leite dos Santos Leiliane Rodrigues dos Santos Oliveira Mauricio Magalhães Domingues Bianca Cristina Costa Gêa Murilo Fonseca Ribeiro Gabriel Moura Mascarin Carlos Frederico Wilcken
author_sort	Carolina Jordan
title	Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil
title_short	Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil
title_full	Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil
title_fullStr	Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil
title_full_unstemmed	Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil
title_sort	entomopathogenic fungi as the microbial frontline against the alien eucalyptus pest gonipterus platensis in brazil
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c60aa5ac34d948508b00e8e0a325ff73
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Entomopathogenic fungi as the microbial frontline against the alien Eucalyptus pest Gonipterus platensis in Brazil

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