Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus

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...

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Autores principales: Iannone, L.J., Vignale, M.V., Pinget, A.D., Re, A., Mc Cargo, P.D., Novas, M.V.
Formato: JOUR
Materias:
Defensive mutualism
Epichloë
Forage production
Grass-endophytes
Head smut disease
Plant disease
Symbiosis
Ustilago bullata
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17545048_v29_n_p45_Iannone
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_17545048_v29_n_p45_Iannone
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spelling todo:paper_17545048_v29_n_p45_Iannone2023-10-03T16:32:33Z Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus Iannone, L.J. Vignale, M.V. Pinget, A.D. Re, A. Mc Cargo, P.D. Novas, M.V. Defensive mutualism Epichloë Forage production Grass-endophytes Head smut disease Plant disease Symbiosis Ustilago bullata 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 Fil:Iannone, L.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Novas, M.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17545048_v29_n_p45_Iannone
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Defensive mutualism
Epichloë
Forage production
Grass-endophytes
Head smut disease
Plant disease
Symbiosis
Ustilago bullata
spellingShingle Defensive mutualism
Epichloë
Forage production
Grass-endophytes
Head smut disease
Plant disease
Symbiosis
Ustilago bullata
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
topic_facet Defensive mutualism
Epichloë
Forage production
Grass-endophytes
Head smut disease
Plant disease
Symbiosis
Ustilago bullata
description 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
format JOUR
author Iannone, L.J.
Vignale, M.V.
Pinget, A.D.
Re, A.
Mc Cargo, P.D.
Novas, M.V.
author_facet Iannone, L.J.
Vignale, M.V.
Pinget, A.D.
Re, A.
Mc Cargo, P.D.
Novas, M.V.
author_sort Iannone, L.J.
title Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus
title_short Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus
title_full Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus
title_fullStr Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus
title_full_unstemmed Seed-transmitted Epichloë sp. endophyte alleviates the negative effects of head smut of grasses (Ustilago bullata) on Bromus auleticus
title_sort seed-transmitted epichloë sp. endophyte alleviates the negative effects of head smut of grasses (ustilago bullata) on bromus auleticus
url http://hdl.handle.net/20.500.12110/paper_17545048_v29_n_p45_Iannone
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