Effects of simultaneous infections of endophytic fungi and arbuscular mycorrhizal fungi on the growth of their shared host grass Achnatherum sibiricum under varying N and P supply |
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| Institution: | 1. DIFAR, University of Genova, Italy;2. DISTAV, University of Genova, Italy;1. Universidad de Buenos Aires, Facultad de Ingeniería, Departamento de Ingeniería Química, Ciudad Autónoma de Buenos Aires, Argentina;2. CONICET, Universidad de Buenos Aires, Instituto de Micología y Botánica (INMIBO), Ciudad Autónoma de Buenos Aires, Argentina;3. Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Ciudad Autónoma de Buenos Aires, Argentina;4. Universidad de Concepción del Uruguay, Facultad de Ciencias Agrarias, Entre Ríos, Argentina;5. Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Concepción del Uruguay, Entre Ríos, Argentina;1. IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires, Av. San Martín 4453 Buenos Aires, C1417DSE Buenos Aires, Argentina;2. IIB-INTECH, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de San Martín, Buenos Aires, Argentina;1. Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental (DBBE), Intendente Güiraldes 2160 - Ciudad Universitaria (CP1428EHA), Ciudad Autónoma de Buenos Aires, Argentina;2. CONICET, Universidad de Buenos Aires, Instituto de Micología y Botánica (INMIBO), Intendente Güiraldes 2160 - Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, Argentina;3. Universidad de Buenos Aires, Facultad de Ingeniería, Departamento de Ingeniería Química, Intendente Güiraldes 2160 - Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, Argentina;1. Institute of Natural Resources and Agrobiology of Salamanca (IRNASA), Spanish National Research Council (CSIC), 30008, Salamanca, Spain;2. Biodiversity Unit, 20014, University of Turku, Finland;3. Department of Biology, 20014, University of Turku, Finland;1. State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China;2. MTT Agrifood Research Finland, Plant Production Research, FI-31600, Jokioinen, Finland |
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| Abstract: | Grasses can be infected by endophytic fungi and arbuscular mycorrhizal (AM) fungi simultaneously. Here, we investigated the interactions of a native grass, Achnatherum sibiricum, with both endophytic and AM fungi (Glomus mosseae, GM and Glomus etunicatum, GE) at different nitrogen (N) and phosphorus (P) levels. The results showed that endophyte infection significantly suppressed the colonization rates and spore density of GE, but had no effect on those of GM. Endophyte infection increased shoot biomass regardless of the nutrient conditions. The effects of AM fungi on host growth were dependent on mycorrhizal species. There was no significant interaction between endophytic fungi and GE on host growth; however, a significant interaction between endophytic fungi and GE occurred in total phenolic concentrations and P uptake. As for GM, a significant interaction among endophytic fungi, AM fungi and nutrient availability occurred in shoot growth. Under sufficient N and P conditions, endophyte infection alleviated the detrimental effects of GM colonization on host growth. |
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| Keywords: | Arbuscular mycorrhizal fungi Endophytic fungi Native grass Nutrient availability |
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