The effect of water soluble Scots pine (Pinus sylvestris L.) and Sitka spruce [Picea sitchensis (Bong.) carr.] heartwood and sapwood extracts on the growth of selected Trichoderma species

Philp, R.W.; Bruce, Alan; Munro, A.G.

doi:10.1016/0964-8305(95)00053-9

Cited by 18 publications

(6 citation statements)

References 7 publications

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“…In general, faster and heavier mould growth is found on sapwood than on heartwood (Viitanen, 2001). This is probably caused by a higher availability of nutrients in the sapwood and/ or higher amounts of toxic extractives in the heartwood (Philp et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Image analysis study of mould susceptibility of spruce and larch wood dried or heat-treated at different temperatures

Frühwald

Wadsö

2008

Wood Material Science & Engineering

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In this study, mould growth on wood was investigated by image analysis. The studied parameters were drying and heattreatment temperatures (20Á2108C), original and resawn surface and different wood species (spruce and larch). Small specimens*some of which were inoculated with a spore suspension*were stored under humid conditions and photographed once a week. Mould growth was assessed by image analysis. In general, results found in earlier studies regarding the influence of several parameters could be confirmed. Image analysis was found to be a useful method to quantify mould growth in an objective and reproducible way.

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Section: Introductionmentioning

confidence: 99%

Image analysis study of mould susceptibility of spruce and larch wood dried or heat-treated at different temperatures

Frühwald

Wadsö

2008

Wood Material Science & Engineering

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“…A similar fungi response to metal-treated wood was found by Gadd [55]. The content of compounds such as tannins in wood was also related to the susceptibility to mould of different species [56][57][58][59][60][61]. This was best illustrated by the differences obtained in heartwood to sapwood, i.e., if the heartwood contained high levels of extractives and reduced nutrient levels, the susceptibility to biodegradation was directly affected [56,62,63].…”

Section: Discussionmentioning

confidence: 56%

“…The content of compounds such as tannins in wood was also related to the susceptibility to mould of different species [56][57][58][59][60][61]. This was best illustrated by the differences obtained in heartwood to sapwood, i.e., if the heartwood contained high levels of extractives and reduced nutrient levels, the susceptibility to biodegradation was directly affected [56,62,63]. In a broader perspective, heat treatment induces significant degradation of amorphous polysaccharides, which occurs at the cell membrane, and the hygroscopicity of the wood decreases [37].…”

Section: Discussionmentioning

confidence: 99%

Resistance of Wood Treated with Iron Compounds against Wood-Destroying Decay and Mould Fungi

Aleinikovas

Varnagirytė–Kabašinskiene

Povilaitienė

et al. 2021

Forests

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Treatment of wood with various physical and chemical factors can change the number of wood parameters, which can also lead to changes in resistance to wood-destroying fungi. This study evaluates the effects of hydrothermal treatments (additives Fe2O3 or FeCl3 with and without commercial tannins, also without additives and fresh wood) on decay and mould fungi resistance of modified wood of Scots pine (Pinus sylvestris), Norway spruce (Picea abies), Douglas fir (Pseudotsuga menziesii), walnut (Juglans regia), and Norway maple (Acer platanoides). For wood samples, the resistance against wood decay fungi Trametes versicolor (white rot) and Coniophora puteana (brown rot) and the resistance against mould fungi Aspergillus niger and Penicillium sp. were assessed. The study findings showed that wood modified with iron compounds could cause a higher resistance to wood-destroying fungi. The weight losses of the modified and control wood, caused by T. versicolor and C. puteana, differed for coniferous and deciduous: the average weight loss of treated pine, spruce, and fir wood caused by C. puteana was higher than that caused by T. versicolor, while these differences on maple and walnut wood were not significant. The wood hydrothermal treatment with Fe2Cl3 with and without tannins significantly reduced the weight loss caused by T. versicolor and C. puteana, and the treatment with Fe2O3 slightly improved the decay resistance. For the wood, hydrothermally modified with FeCl3 and FeCl3 + tannins, the mould area for both tested Aspergillus niger and Penicillium sp. was smallest for the wood of all tested tree species compared to other treatments. A different response was obtained for coniferous and deciduous tree species wood. The spruce wood, followed by fir wood, treated with FeCl3 with and without tannins, was the most resistant against the mould fungi. Relatively low resistance against the mould fungi was fixed for the maple wood treated by various iron compounds, except the treatment with Fe2O3 + tannins, which gave a very positive response against the Penicillium sp.

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“…Sapwood generally contains lesser amounts of extractives and is, therefore, often more susceptible to fungal attack (Deacon 1997). Sitka spruce water-soluble extracts from sapwood showed lesser inhibition against mold fungi than the extracts from heartwood (Philp et al 1995). In addition, sapwood contains more carbohydrates, as shown by Willfö r et al (2005), and the presence of such compounds is correlated to the growth of mold fungi (Theander et al 1993).…”

Section: Introductionmentioning

confidence: 87%

Some factors influencing susceptibility to discoloring fungi and water uptake of Scots pine (Pinus sylvestris), Norway spruce (Picea abies) and Oriental spruce (Picea orientalis)

Blom

Johansson

Sivrikaya

2013

Wood Material Science & Engineering

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The effect of water soluble Scots pine (Pinus sylvestris L.) and Sitka spruce [Picea sitchensis (Bong.) carr.] heartwood and sapwood extracts on the growth of selected Trichoderma species

Cited by 18 publications

References 7 publications

Image analysis study of mould susceptibility of spruce and larch wood dried or heat-treated at different temperatures

Image analysis study of mould susceptibility of spruce and larch wood dried or heat-treated at different temperatures

Resistance of Wood Treated with Iron Compounds against Wood-Destroying Decay and Mould Fungi

Some factors influencing susceptibility to discoloring fungi and water uptake of Scots pine (Pinus sylvestris), Norway spruce (Picea abies) and Oriental spruce (Picea orientalis)

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