Abstract
Monoterpenes form part of the natural defenses against pathogenic fungi in conifers. As a result of exposure to kiln-drying, up to 50 percent of the monoterpene content of softwood timber can be lost. This paper reports an in vitro investigation of the effect of high monoterpene vapor concentration on the formation of pigmented mycelium and coremia/perithecia by Ophiostoma piceae, a common cause of stain in timber. Of five commonly occurring monoterpenes tested, alpha -pinene, beta -pinene, A3-carene, and myrcene caused relatively small radial growth rate reductions but had considerable inhibitory effects on mycelial pigmentation and coremia/perithecia formation. These monoterpenes were also associated with thickening of mycelia and secretion of slime onto the colony surface. In contrast, limonene failed to induce these effects, instead stimulating formation of coremia/perithecia. In combination with the many other changes in wood caused by kiln-drying, the reduction in monoterpene content may contribute to a modified susceptibility to disfiguration by stain fungi.
| Original language | English |
|---|---|
| Pages (from-to) | 89-92 |
| Number of pages | 4 |
| Journal | Forest Products Journal |
| Volume | 51 |
| Publication status | Published - 2001 |
Keywords
- BLUE-STAIN FUNGI
- PINE
- KILN
- EMISSIONS
- SPRUCE
- LUMBER
- WOOD
Cite this
Modification of the growth habit of the softwood disfiguring fungus Ophiostoma piceae by monoterpene vapors. / Payne, C ; Woodward, S ; Petty, J A .
In: Forest Products Journal, Vol. 51, 2001, p. 89-92.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Modification of the growth habit of the softwood disfiguring fungus Ophiostoma piceae by monoterpene vapors
AU - Payne, C
AU - Woodward, S
AU - Petty, J A
PY - 2001
Y1 - 2001
N2 - Monoterpenes form part of the natural defenses against pathogenic fungi in conifers. As a result of exposure to kiln-drying, up to 50 percent of the monoterpene content of softwood timber can be lost. This paper reports an in vitro investigation of the effect of high monoterpene vapor concentration on the formation of pigmented mycelium and coremia/perithecia by Ophiostoma piceae, a common cause of stain in timber. Of five commonly occurring monoterpenes tested, alpha -pinene, beta -pinene, A3-carene, and myrcene caused relatively small radial growth rate reductions but had considerable inhibitory effects on mycelial pigmentation and coremia/perithecia formation. These monoterpenes were also associated with thickening of mycelia and secretion of slime onto the colony surface. In contrast, limonene failed to induce these effects, instead stimulating formation of coremia/perithecia. In combination with the many other changes in wood caused by kiln-drying, the reduction in monoterpene content may contribute to a modified susceptibility to disfiguration by stain fungi.
AB - Monoterpenes form part of the natural defenses against pathogenic fungi in conifers. As a result of exposure to kiln-drying, up to 50 percent of the monoterpene content of softwood timber can be lost. This paper reports an in vitro investigation of the effect of high monoterpene vapor concentration on the formation of pigmented mycelium and coremia/perithecia by Ophiostoma piceae, a common cause of stain in timber. Of five commonly occurring monoterpenes tested, alpha -pinene, beta -pinene, A3-carene, and myrcene caused relatively small radial growth rate reductions but had considerable inhibitory effects on mycelial pigmentation and coremia/perithecia formation. These monoterpenes were also associated with thickening of mycelia and secretion of slime onto the colony surface. In contrast, limonene failed to induce these effects, instead stimulating formation of coremia/perithecia. In combination with the many other changes in wood caused by kiln-drying, the reduction in monoterpene content may contribute to a modified susceptibility to disfiguration by stain fungi.
KW - BLUE-STAIN FUNGI
KW - PINE
KW - KILN
KW - EMISSIONS
KW - SPRUCE
KW - LUMBER
KW - WOOD
M3 - Article
VL - 51
SP - 89
EP - 92
JO - Forest Products Journal
JF - Forest Products Journal
SN - 0015-7473
ER -