Use este identificador para citar ou linkar para este item:
Tipo: Artigo
Título: Recognition of endophytic Trichoderma species by leaf-cutting ants and their potential in a Trojan-horse management strategy
Autor(es): Rocha, Silma L.
Evans, Harry C.
Jorge, Vanessa L.
Cardoso, Lucimar A. O.
Pereira, Fernanda S. T.
Rocha, Fabiano B.
Barreto, Robert W.
Hart, Adam G.
Elliot, Simon L.
Abstract: Interactions between leaf-cutting ants, their fungal symbiont (Leucoagaricus) and the endophytic fungi within the vegetation they carry into their colonies are still poorly understood. If endophytes antagonistic to Leucoagaricus were found in plant material being carried by these ants, then this might indicate a potential mechanism for plants to defend themselves from leaf-cutter attack. In addition, it could offer possibilities for the management of these important Neotropical pests. Here, we show that, for Atta sexdens rubropilosa, there was a significantly greater incidence of Trichoderma species in the vegetation removed from the nests—and deposited around the entrances—than in that being transported into the nests. In a no-choice test, Trichoderma-infested rice was taken into the nest, with deleterious effects on both the fungal gardens and ant survival. The endophytic ability of selected strains of Trichoderma was also confirmed, following their inoculation and subsequent reisolation from seedlings of eucalyptus. These results indicate that endophytic fungi which pose a threat to ant fungal gardens through their antagonistic traits, such as Trichoderma, have the potential to act as bodyguards of their plant hosts and thus might be employed in a Trojan-horse strategy to mitigate the negative impact of leaf-cutting ants in both agriculture and silviculture in the Neotropics. We posit that the ants would detect and evict such ‘malign’ endophytes—artificially inoculated into vulnerable crops—during the quality-control process within the nest, and, moreover, that the foraging ants may then be deterred from further harvesting of ‘Trichoderma-enriched’ plants.
Palavras-chave: Fungal bodyguards
Pest management
Trichoderma endophytes
Editor: Royal Society Open Science
Tipo de Acesso: Open Access
Data do documento: 9-Mar-2017
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
rsos160628.pdftexto completo932,21 kBAdobe PDFThumbnail

Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.