Abstract
The effects of the soil yeasts Rhodotorula mucilaginosa, Cryptococcus laurentii and Saccharomyces kunashirensis on the arbuscular mycorrhizal (AM) fungus Glomus mosseae (BEG 12) was studied in vitro and in greenhouse trials. The presence of yeasts or their soluble and volatile exudates stimulated the percentage spore germination and hyphal growth of G. mosseae. Percentage root length colonized by G. mosseae and plant dry matter of soybean (Glycine max L. Merill) were increased only when the soil yeasts were inoculated prior to the AM fungus. Higher beneficial effects on AM colonization and plant dry matter were found when the soil yeasts were inoculated as an aqueous solution rather than as a thin agar slice. Although soluble and volatile exudates of yeasts benefited the AM symbiosis, their modes of action were different.
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Financial support for this study was provided by the Comision Interministerial de Ciencia y Tecnologia, Spain and by the University of Buenos Aires (Grant X028) Argentina.
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Sampedro, I., Aranda, E., Scervino, J.M. et al. Improvement by soil yeasts of arbuscular mycorrhizal symbiosis of soybean (Glycine max) colonized by Glomus mosseae . Mycorrhiza 14, 229–234 (2004). https://doi.org/10.1007/s00572-003-0285-y
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DOI: https://doi.org/10.1007/s00572-003-0285-y