Abstract

At one location in central Sweden, agricultural pine (Pinus sylvestris L.) fence poles treated with a commercial copper-chromium-phosphorus preservative (CCP) formulation according to use class 4 at retention of 30 kg m(-3) were prematurely degraded by fungi after only two years in-service. Light- and electron microscopy analyses showed decay to result from primarily brown rot attack. Culture studies produced on different agar and copper-containing media using small wood slivers removed from infected poles allowed establishment of a number of pure cultures of Phycomycetes, Ascomycetes, Fungi Imperfecti and Basidiomycete fungi. Using morphological characters, PCR and sequencing of isolated Antrodia vaillantii was determined as the most abundant basidiomycete present and as the major causal agent of decay. Compatibility tests and comparison of the ITS nrDNA sequences of our putative A. vaillantii isolate with other A. vaillantii strains and with Antrodia radiculosa showed differences suggesting a hybrid strain. A combination of site characteristics (e.g. hot spots of A. vaillantii), the use of juvenile poles, copper tolerance and overall ineffectivity of CCP against A. vaillantii is suggested as reasons for premature decay. (C) 2009 Elsevier Ltd. All rights reserved.

Keywords

Antrodia vaillantii; Brown rot; Copper-chromium-phosphorus preservative (CCP); Pinus sylvestris; Juvenile wood

Published in

International Biodeterioration and Biodegradation
2009, Volume: 63, number: 7, pages: 906-912
Publisher: ELSEVIER SCI LTD

SLU Authors

• Råberg, Ulrika

  • Department of Forest Products, Swedish University of Agricultural Sciences
    

• Daniel, Geoffrey

  • Department of Forest Products, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Forest Science


Publication identifier

DOI: https://doi.org/10.1016/j.ibiod.2009.04.009

Permanent link to this page (URI)

https://res.slu.se/id/publ/61617