Bioprotection against Gaeumannomyces graminis in barley - a comparison between arbuscular mycorrhizal fungi
2012
Castellanos-Morales, V., Corporativo de Desarrollo Sustentable, Morelia (Mexico) | Cardenas-Navarro, R., Instituto de Investigaciones Agropecuarias y Forestales, Tarimbaro (Mexico) | Garcia-Garrido, J.M., CSIC, Granada (Spain). Dept. of Soil Microbiology and Symbiotic Systems | Illana, A., CSIC, Granada (Spain). Dept. of Soil Microbiology and Symbiotic Systems | Ocampo, J.A., CSIC, Granada (Spain). Dept. of Soil Microbiology and Symbiotic Systems | Steinkellner, S., University of Natural Resources and Life Sciences, Vienna (Austria). Div. of Plant Protection | Vierheilig, H., CSIC, Granada (Spain). Dept. of Soil Microbiology and Symbiotic Systems
In the present study we tested the systemic bioprotective effect of the arbuscular mycorrhizal fungi Glomus mosseae, Glomus intraradices and Gigaspora rosea against the soil-borne fungal pathogen Gaeumannomyces graminis var. tritici in a barley split-root system. Glomus intraradices, Glomus mosseae and Gigaspora rosea colonized the split-root system of barley plants at different levels; however, all arbuscular mycorrhizal fungi clearly reduced the level of root lesions due to the pathogen Gaeumannomyces graminis. Our data indicate that some arbuscular mycorrhizal fungi need high root colonization rates to protect plants against fungal pathogens, whereas others act already at low root colonization rates.
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