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Occurrence and impact of the root-rot biocontrol agent Phlebiopsis gigantea on soil fungal communities in Picea abies forests of northern Europe
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2012 (English)In: FEMS Microbiology Ecology, ISSN 0168-6496, E-ISSN 1574-6941, Vol. 81, no 2, 438-445 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to assess belowground occurrence, persistence and possible impact of the biocontrol agent Phlebiopsis gigantea (Fr.) Julich on soil fungi. Sampling of soil and roots of Picea abies (L.) H. Karst. was carried out at 12 P.similar to gigantea-treated and five nontreated control sites representing 1- to 60-month-old clear-cuts and thinned forest sites in Finland and Latvia. The 454-sequencing of ITS rRNA from fine roots, humus and mineral soil resulted in 8626 high-quality fungal sequences. Phlebiopsis gigantea represented 1.3% of all fungal sequences and was found in 14 treated and nontreated sites and in all three substrates. In different substrates, the relative abundance of P.similar to gigantea at stump treatment sites either did not differ significantly or was significantly lower than in nontreated controls. No significant correlation was found between the time elapsed since the tree harvesting and/or application of the biocontrol and abundance of P.similar to gigantea in different substrates. In conclusion, the results demonstrate that P.similar to gigantea occasionally occurs belowground in forest ecosystems but that stump treatment with the biocontrol agent has little or no impact on occurrence and persistence of P.similar to gigantea belowground, and consequently no significant impact on soil fungi.

Place, publisher, year, edition, pages
2012. Vol. 81, no 2, 438-445 p.
Keyword [en]
Phlebiopsis gigantea, biocontrol, environmental impact, fungal ecology, soil fungi
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-179010DOI: 10.1111/j.1574-6941.2012.01366.xISI: 000306185300014OAI: oai:DiVA.org:uu-179010DiVA: diva2:543246
Available from: 2012-08-07 Created: 2012-08-06 Last updated: 2012-08-07Bibliographically approved

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