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Abstract:

Some grasses are co-infected by ‘castrator’ fungal pathogens, such as Ustilago bullata, and beneficial seed-transmitted Epichloë endophytes that compete for plant photosynthates and flowers. Epichloë-infected (E+) and Epichloë-free (E−) seeds of Bromus auleticus were inoculated (S+) or not (S−) with teliospores of U. bullata and an experiment under field conditions was performed to evaluate the effect of these fungal infections on different host plant traits. Head smut disease incidence was almost 0% in E+ treatment whereas in endophyte-free plants the disease incidence reached 33%, a result in concordance with the lower number of seeds produced by E−S+ plants. Neither the smut nor the endophyte affected seedling emergence or growth. Plant survival was significantly decreased by the smut in E− plants and was associated with a higher biomass production in E+ treatments. Our results provide new insights about the ecology of Epichloë endophytes and their protective and growth-promoting role in the interaction of its host with U. bullata. © 2017 Elsevier Ltd and British Mycological Society

Registro:

Documento: Artículo
Título:Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus
Autor:Iannone, L.J.; Vignale, M.V.; Pinget, A.D.; Re, A.; Mc Cargo, P.D.; Novas, M.V.
Filiación:Universidad de Buenos Aires, Facultad de Ingeniería, Departamento de Ingeniería Química, Ciudad Autónoma de Buenos Aires, Argentina
CONICET, Universidad de Buenos Aires, Instituto de Micología y Botánica (INMIBO), Ciudad Autónoma de Buenos Aires, Argentina
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Ciudad Autónoma de Buenos Aires, Argentina
Universidad de Concepción del Uruguay, Facultad de Ciencias AgrariasEntre Ríos, Argentina
Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Concepción del UruguayEntre Ríos, Argentina
Palabras clave:Defensive mutualism; Epichloë; Forage production; Grass-endophytes; Head smut disease; Plant disease; Symbiosis; Ustilago bullata
Año:2017
Volumen:29
Página de inicio:45
Página de fin:51
DOI: http://dx.doi.org/10.1016/j.funeco.2017.06.001
Título revista:Fungal Ecology
Título revista abreviado:Fungal Ecol.
ISSN:17545048
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_17545048_v29_n_p45_Iannone

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Citas:

---------- APA ----------
Iannone, L.J., Vignale, M.V., Pinget, A.D., Re, A., Mc Cargo, P.D. & Novas, M.V. (2017) . Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus. Fungal Ecology, 29, 45-51.
http://dx.doi.org/10.1016/j.funeco.2017.06.001
---------- CHICAGO ----------
Iannone, L.J., Vignale, M.V., Pinget, A.D., Re, A., Mc Cargo, P.D., Novas, M.V. "Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus" . Fungal Ecology 29 (2017) : 45-51.
http://dx.doi.org/10.1016/j.funeco.2017.06.001
---------- MLA ----------
Iannone, L.J., Vignale, M.V., Pinget, A.D., Re, A., Mc Cargo, P.D., Novas, M.V. "Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus" . Fungal Ecology, vol. 29, 2017, pp. 45-51.
http://dx.doi.org/10.1016/j.funeco.2017.06.001
---------- VANCOUVER ----------
Iannone, L.J., Vignale, M.V., Pinget, A.D., Re, A., Mc Cargo, P.D., Novas, M.V. Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus. Fungal Ecol. 2017;29:45-51.
http://dx.doi.org/10.1016/j.funeco.2017.06.001