Suppression of other soil microorganisms by mycelium of arbuscular mycorrhizal fungi in root-free soil
Por:
Welc M., Ravnskov S., Kieliszewska-Rokicka B., Larsen J.
Publicada:
1 sep 2010
Resumen:
The influence of mycelium of two arbuscular mycorrhizal (AM) fungi, Glomus intraradices and Glomus mosseae, other soil microorganisms, was examined in root-free soil with and without organic substrate amendment in terms of cellulose. The AM fungi were grown in symbiosis with cucumber in a compartmented growth system, which allowed AM fungal external mycelium to grow into root-free compartments. The fungicide Benomyl was applied to the root-free compartments to create an alternative non-mycorrhizal control treatment. Whole cell biomarker fatty acids were employed to quantify different groups of soil microorganisms including the two AM fungi. Abundance of most microbial groups were reduced by external mycelium of both AM fungi, though differential effects on the microbial community composition were observed between the two AM fungi as revealed from principal component analysis. Inhibition of other soil microorganisms was more pronounced in root-free soil with mycelium of G. mosseae than
Filiaciones:
Welc M.:
University of Aarhus, Faculty of Agricultural Sciences, Department of Integrated Pest Management, 4200 Slagelse, Denmark
Kazimierz Wielki University in Bydgoszcz, Institute of Environmental Biology, Department of Mycology and Mycorrhiza, Bydgoszcz, Poland
Ravnskov S.:
University of Aarhus, Faculty of Agricultural Sciences, Department of Integrated Pest Management, 4200 Slagelse, Denmark
Kieliszewska-Rokicka B.:
Kazimierz Wielki University in Bydgoszcz, Institute of Environmental Biology, Department of Mycology and Mycorrhiza, Bydgoszcz, Poland
Institute of Dendrology Polish Academy of Sciences, Kórnik, Poland
Larsen J.:
University of Aarhus, Faculty of Agricultural Sciences, Department of Integrated Pest Management, 4200 Slagelse, Denmark
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