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Title: Tolerance of Serpula lacrymans to copper-based wood preservatives

Source: International biodeterioration & biodegradation. Vol 56 (2005): Pages 173-177

Author(s)Hastrup, Anne Christine Steenkjaer; Green, Frederick; Clausen, Carol A.; Jensen, Bo

Publication Year: 2005  View PDF »

Category: Journal Articles

Abstract: Serpula lacrymans, the dry rot fungus, is considered the most economically important wood decay fungus in certain temperate regions of the world, namely northern Europe, Japan, and Australia. Previously, copper-based wood preservatives were commonly used for pressure treatment of wood for building construction, but some decay fungi are known to be copper tolerant. In this study, soil-block tests were undertaken to clarify the effect of copper, copper citrate, and alkaline copper quaternary-type D (ACQ-D) on the decay capabilities of S. lacrymans compared with an alternative wood preservative not containing copper. Twelve isolates of the dry rot fungus S. lacrymans and four other brown-rot species were evaluated for weight loss on wood treated with 1.2% copper citrate, 0.5% ACQ-D, and 0.5% naphthaloylhydroxylamine (NHA). Eleven out of 12 isolatcs of S. lacrymans were shown to be tolerant towards copper citrate. The ACQ-D and NHA preservatives, on the other hand, were both effective against the dry rot isolates.

Keywords: Serpula lacrymans, dry rot, copper tolerance, copper citrate, ACQ-D, NHA, brown rot, wood preservatives, wood-decaying fungi, copper, soil block testing, metal tolerance, preservatives, copper compounds, decay fungi, ammoniacal copper quat

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RITS Product ID: 11767
Current FPL Scientists associated with this product (listed alphabetically)
Clausen, Carol A.
Supervisory Research Microbiologist
Green, Frederick
Research Microbiologist
 

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