Fungal endophytes help prevent weed invasions

This study tested whether the endophyte-promoted competitive superiority of forage grass can be used in biological weed control. Feasibility of endophytes in weed control was tested by manipulating endophyte colonization of meadow fescue [Scherodonus pratensis ex. Lolium pratense and Festuca pratens...

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Otros Autores: Saikkonen, Kari, Ruokolainen, Kalle, Huitu, Otso, Gundel, Pedro Emilio, Piltti, Tiina, Hamilton, Cyd E., Helander, Marjo
Formato: Artículo
Lenguaje:Inglés
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Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2013saikkonen1.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
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520 |a This study tested whether the endophyte-promoted competitive superiority of forage grass can be used in biological weed control. Feasibility of endophytes in weed control was tested by manipulating endophyte colonization of meadow fescue [Scherodonus pratensis ex. Lolium pratense and Festuca pratensis] in three experiments. First, species richness, the cover percentages and biomass of detected species were estimated in replicated field plots seeded with endophyte-free [E-] or endophyte colonized [E+] meadow fescue. Four years after establishment of the grass monocultures, weed species richness and coverage was higher in E- plots compared to E+ plots. The cover percentages of meadow fescue decreased with weed invasions being 75 percent and 98 percent in E- and E+ plots, respectively. Similarly, the proportion of weeds in the total biomass was over 45 percent higher in E- plots compared to E+ plots at the end of the six years study. Half of the plots were subjected to herbivory by voles, but the effect of endophyte overrode the effect of herbivory. Second, the survival of individually grown E+ meadow fescues was higher and the plants were 50 percent larger and produced 54 percent more inflorescences than E- plants in a common garden experiment. Third, a seed germination test demonstrated that recruitment of new meadow fescues was not mediated by substances inhibiting seed germination potentially released by E+ plants. These results demonstrated that endophyte promoted competitive superiority of grass cultivars can hinder weed invasions. 
653 0 |a COMPETITION 
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653 0 |a GRAZING 
653 0 |a HERBIVORY 
653 0 |a MICROTUS 
653 0 |a NEOTYPHODIUM 
653 0 |a YIELD 
653 0 |a BIOCONTROL AGENT 
653 0 |a BIOLOGICAL CONTROL 
653 0 |a BIOLOGICAL INVASION 
653 0 |a COLONIZATION 
653 0 |a CULTIVAR 
653 0 |a ENDOPHYTE 
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653 0 |a FUNGUS 
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653 0 |a SPECIES RICHNESS 
653 0 |a SURVIVAL 
653 0 |a WEED 
653 0 |a WEED CONTROL 
653 0 |a FESTUCA PRATENSIS 
653 0 |a LOLIUM 
653 0 |a MICROTUS 
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653 0 |a NEOTYPHODIUM 
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773 |t Agriculture, Ecosystems and Environment  |g vol.165 (2013), p.1-5 
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900 |a ^aSaikkonen, K.^tAgrifood Research Finland, Plant Protection, FI-31600 Jokioinen, Finland 
900 |a ^aRuokolainen, K.^tSection of Ecology, Department of Biology, University of Turku, FI-20014, Finland 
900 |a ^aHuitu, O.^tFinnish Forest Research Institute, Suonenjoki Research Unit, Juntintie 154, FI-77600, Suonenjoki, Finland 
900 |a ^aGundel, P.E.^tAgrifood Research Finland, Plant Protection, FI-31600 Jokioinen, Finland 
900 |a ^aGundel, P.E.^tIFEVA-CONICET, Faculty of Agronomy, Buenos Aires University (UBA), Buenos Aires, Argentina 
900 |a ^aPiltti, T.^tSection of Ecology, Department of Biology, University of Turku, FI-20014, Finland 
900 |a ^aHamilton, C.E.^tAgrifood Research Finland, Plant Protection, FI-31600 Jokioinen, Finland 
900 |a ^aHelander, M.^tSection of Ecology, Department of Biology, University of Turku, FI-20014, Finland 
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