Endophytic fungi of grasses protect other plants from aphid herbivory

Microbial plant symbionts are widely spread in nature changing the way their hosts interact with their environment. Neotyphodium fungal endophytes [Clavicipitaceae] are grass symbionts known by their production of alkaloids, toxic for herbivores. Here, we hypothesized that endophytes confer associat...

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Autor principal: García Parisi, Pablo Adrián
Otros Autores: Grimoldi, Agustín Alberto, Omacini, Marina
Formato: Artículo
Lenguaje:Español
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Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2014garciaparisi.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
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245 0 0 |a Endophytic fungi of grasses protect other plants from aphid herbivory 
520 |a Microbial plant symbionts are widely spread in nature changing the way their hosts interact with their environment. Neotyphodium fungal endophytes [Clavicipitaceae] are grass symbionts known by their production of alkaloids, toxic for herbivores. Here, we hypothesized that endophytes confer associational protection to non-host plants and change emission of host volatile-compounds. In an outdoor mesocosm experiment, we examined aphid infestation on Trifolium repens plants, in response to Neotyphodium occultans presence in neighbouring Lolium multiflorum. Contrasting levels of Rhizobium were generated in T. repens plants considering that symbiosis with N2-fixers would influence herbivore abundance. Aphid infestation increased responding to symbiotic status of T. repens plants, when surrounded by non-symbiotic L. multiflorum plants. Endophytes modified the volatile imprints of L. multiflorum plants measured by an electronic nose, suggesting a potential mechanism to benefit neighbours. This associational protection constitutes a new mutualism trait of grass-endophyte symbiosis, becoming a non-private benefit available to other community partners. 
653 0 |a ASSOCIATIONAL PROTECTION 
653 0 |a DEFENSIVE MUTUALISM 
653 0 |a NEOTYPHODIUM 
653 0 |a PROTECTING SYMBIONT 
653 0 |a SYMBIOSIS 
653 0 |a VOLATILE EMISSION 
700 1 |9 7964  |a Grimoldi, Agustín Alberto 
700 1 |9 6464  |a Omacini, Marina 
773 |t Fungal Ecology  |g vol.9, no.1 (2014), p.61-64 
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