Your search resulted in 841 documents. Displaying 25 entries per page.
Soft rot fungi found in copper/chrome/arsenic treated hardwood power transmission poles in Queensland
1978 - IRG/WP 185
In Queensland the effective service life of copper/chrome/arsenic (CCA) treated hardwood telegraph and power transmission poles is being dramatically shortened due to attack by soft rot decay fungi. The Australian Wood Preservation and Pole Industries are funding research into this serious soft rot problem involving C.S.I.R.O. and the University of Queensland. The C.S.I.R.O. is actively engaged wi...
L E Leightley
The evaluation of a survey of dry rot damages in Japan
1983 - IRG/WP 1179
The damage of wooden houses from Serpula lacrymans has increased in Japan, particularly in the northern area, Hokkaido Prefecture (See Figure 1). The weather conditions in Asahikawa have been recorded. The data obtained from the survey carried out over the five years from 1975 to 1980 were previously reported to the 5th International Biodeterioration Symposium which was held in Aberdeen, Scotland ...
S Doi
Inhibitory effects of leachates from Scots pine wood on germination of some wood rotting fungi
1986 - IRG/WP 1282
Leachates from sapwood of Pinus sylvestris inhibited or reduced the germination of basidiospores of the wood decay fungi tested. The fungi were selected among those preferentially colonizing hardwood or softwood, representatives for brown rot and white rot fungi, early basidiomycete colonizers and late basidiomycete colonizers in above-ground parts of pine as well as fungi found in high frequencie...
J Bjurman
Appendage-mediated attachment in spores of lignicolous marine fungi
1982 - IRG/WP 487
The role of appendages in aiding attachment and entrapment of marine fungal spores to wood substrata is described in this paper. Scanning electron microscope (S.E.M.) observations indicated five different classes of attachment or entrapment response in the sixteen species examined. These responses varied -hith the degree to which appendages attached or entrapped spores to wood surfaces. In additio...
G Rees
Penetration as Key Factor for Determining the Performance of Wood Preservatives
2004 - IRG/WP 04-20293
Stakes of Scots pine sapwood with a dimension of 4 x 4 x 75 cm³ were impregnated with preservatives containing 2 % of propiconazole which had passed the EN 113 test criteria without any problems. The
penetration of the colourless preservative was determined successfully by a fungal screening test described by Sutter (1978). The test revealed the insufficient penetration behaviour within the gi...
H Leithoff, I Stephan, R-D Peek
A possible role of unique TCA cycles in wood-rotting basidiomycetes
2003 - IRG/WP 03-10461
The copper tolerant brown-rot fungus, Fomitopsis palustris, acquires metabolic energy by use of the constitutively-occurring Kornberg’s glyoxylate cycle coordinating with oxalate biosynthesis and glucose oxidation (Erman Munir et al. Proc. Natl. Acad. Sci. USA, (2001) 98, 11126-11130). Furthermore, this fungus does not have the normal TCA cycle, lacking 2-oxoglutarate dehydrogenase which is a ke...
E Munir, T Hattori, M Shimada
Field studies investigating the efficacy of biological treatments in preventing decay of freshly-felled pine
1993 - IRG/WP 93-10022
Four species of fungi (Trichoderma viride, Ascocoryne sarcoides, Potebniamyces conifererum and Cryptosporiopsis terraconensis) and sterile distilled water were applied separately to unpeeled, freshly-felled pine billets. The fungi were all in the form of concentrated aqueous spore suspensions, and were spread onto the end-grains of the logs by brush. Destructive sampling of the billets was carried...
M W Schoeman, D J Dickinson
The use of selective media for studying the colonization of wood in ground contact by microorganisms
1978 - IRG/WP 186
In October1976 a field trial was set up in order to monitor the progressive colonisation of wood in ground contact using orientated small stakes of Scots pine (Pinus sylvestris) and birch (Betula sp.) (30 x 45 x 250 mm³). Half the number of each species were treated with a 1% solution of CCA by a vacuum impregnation process. All the stakes were coated on three sides with an epoxy-resin sealant to...
C P Clubbe
Application of DNA fingerprinting methods to identify biocontrol strains of fungi imperfecti
1994 - IRG/WP 94-10068
We have analyzed a number of biocontrol strains of Trichoderma harzianum and other Trichoderma strains with the methods DNA fingerprinting and PCR fingerprinting to differentiate and identify these strain which is not possible with morphological or biochemical methods. We could differentiate even gamma-ray induced mutants from each other as well as different strains form the same and different spe...
A Schlick, K Kuhls, W Meyer, E Lieckfeld, T Börner, K Messner
Heat inactivation of mould fungi on wood
1993 - IRG/WP 93-40012
Heat treatments have been successfully used for eradication of dry rot. The effect of heat treatments at 40, 50 and 60°C for various time intervals on the inactivation of Penicillium brevicompactum was determined. The effect of heat on ungerminated spores and spores "pregerminated" for 24 hours was evaluated by plating on malt-extract agar. Although most ungerminated spores were inactivated after...
J Bjurman
Characteristics of the pigments produced by sap-staining fungi
1997 - IRG/WP 97-10223
The present study was conducted to characterize the pigments produced by sap-staining fungi, Aureobasidium pullulans (de Bary) Arnaud and Ceratocystis piceae (Münch) H. and P. Sydow. The pigments isolated from tested fungi were identified as melanins by spectroscopic methods (UV and infrared spectra). The UV and the infrared spectra of the fungal pigments were similar to those of the synthetic me...
M Mori, M Takahashi
Characterization of Poria indoor brown-rot fungi
1995 - IRG/WP 95-10094
The heterogeneous group of "Poria" fungi causing brown rot in buildings and also of wood in ground contact comprises Antrodia vaillantii, Antrodia serialis, Antrodia sinuosa, Antrodia xantha and Tyromyces placenta. These fungi have similar morphological appearance and biology. Their nomenclature has a confusing history and is still not uniform. As a consequence, misinterpretations may occur. SDS p...
O Schmidt
Effect of crude tall oil, linseed oil and rapeseed oil on the growth of the decay fungi
2002 - IRG/WP 02-30299
The influence of crude tall oil, linseed oil and rapeseed oil on the growth of Coniophora puteana, Poria placenta and Coriolus versicolor was studied. The selected test oils were observed to have different effects on the the fungal growth. Crude tall oil inhibited the radial growth of all fungi. Rapeseed oil either accelerated or inhibited the growth of fungi depending on the type of fungus involv...
L Paajanen, A-C Ritschkoff
Molecular phylogeny of Ophiostoma spp. related to blue-stain in pine
2002 - IRG/WP 02-10432
Blue-stain in coniferous woods is an economically important disease in many temperate countries, caused specially by genus Ophiostoma. Classical taxonomy of genus Ophiostoma is limited for the correct identification of many species, because of the similar macroscopic and microscopic characters, as well as the existence of some species complex. Molecular identification is a good complement to eluci...
M Villarreal, F Arenal, J Sánchez-Ballesteros, M T De Troya, F Llinares, V Rubio, A Navarrete
Natural Durability studies and Changes in wood chemistry of some Ghanaian hardwoods during decay by white- and brown-rot fungi
2004 - IRG/WP 04-10542
The natural decay resistance of Esa (Celtis mildbraedii), Wawabima (Sterculia rhinopetela) and Dahoma (Piptadeniastrum africanum) obtained from Ghana was determined according to BS EN 113 (1997). Esa was found not durable to the white-rot, but very durable to the brown-rot; Wawabima was very durable to both white- and brown-rots; and Dahoma was durable to the white-rot, and very durable to the bro...
Zeen Huang, K Maher, S A Amartey
Screening wood preservatives: Comparison of the soil block, agar block and agar plate tests
1993 - IRG/WP 93-20001
Several test procedures have been developed over the years to screen potential biocides for their value as wood preservatives. Each test has inherent advantages and disadvantages. In this paper the relative merits of the soil block, agar block and agar plate tests are compared. Eight commercially available biocides encompassing inorganic and organic systems were tested against four basidiomycete d...
K J Archer, D D Nicholas, T Schultz
Suitability of propiconazole (R 49362) as a new-generation fungicide
1989 - IRG/WP 3529
Propiconazole (R 49362), an anti-fungal triazole-compound of Janssen Pharmaceutica, has been extensively tested to determine its potential use as a wood preserving fungicide. Various tests in both private laboratories and official institutes indicate a good activity against Basidiomycetes (brown and white rot) and Ascomycetes (blue stain-in-service). The active ingredient seems very resistant to w...
A R Valcke
Biological control of wood decay fungi. - Part II. Effects of exogenous nitrogen on effectiveness
2000 - IRG/WP 00-10360
The effects of nitrogen (urea and ammonium nitrate) on the ability of Trichoderma harzianum to inhibit the enzyme capabilities and decay capacities of Trametes versicolor and Gloeophyllum trabeum were investigated using a small wood sandwich decay test. The biocontrol fungus generally had a greater effect on the brown rot fungus, confirming previous reports. Nitrogen produced inconsistent effects ...
E A Canessa, J J Morrell
Detection of dry rot by air analysis
1992 - IRG/WP 92-2399
Detection of dry rot (Serpula lacrymans) at an early stage appears to be very difficult in practice. Also control inspections in buildings, after remedial treatment of dry rot, have a limited accuracy. The use of trained dogs in Denmark initiated the idea for this research on the possible use of air analysis as a detection method. The Centre for Timber Research-TNO (TNO-CHT) and the Institute for ...
P Esser, A C Tas
Gaseous treatment of timber with allyl isothiocyanate. Fungicidal and insecticidal effects
1996 - IRG/WP 96-30108
Gaseous treatment with allyl isothiocyanate (AIT) was tested for its effects on the growth of microorganisms on the wood substrate and the mortality of subterranean termites and powder-post beetles. Toxic limits of AIT were determined as concentrations in the air when an AIT-treated filter paper was placed in a sealed container with fungus-inoculated wood specimens. Those were <3.8 ppm for Aure...
K Tsunoda, T Yoshimura
The colonisation and succession of fungi in wood
1980 - IRG/WP 1107
A study of the microbial ecology of small stakes of Pinus sylvestris and Betula pendula, both untreated, and treated with a 1% solution of CCA is in progress. Results are presented for the early stages, up to 18 months.Two new techniques were developed linked by the philosophy of objective assessment. Isolations were made from the wood in a pre-determined pattern and transferred to four selective ...
C P Clubbe
Biosorption of metals for wood waste effluent clean up
1997 - IRG/WP 97-50090
The common filamentous fungi can sorb metal ions from aqueous solutions. The biosorption of metal ions like copper Cu2+, chromium Cr6+ and arsenic As5+ by dead fungal mycelia was investigated. Two industrial fermentation byproducts are tested: Mucor miehei and Aspergillus oryzae. The adsorption of metal ions depends on parameters such as chemical treatment of fungi before biosorption (acid or basi...
S Legay, G Labat
rDNA-ITS sequence of Serpula lacrymans and other important indoor rot fungi and taxon-specific priming PCR for their detection
1999 - IRG/WP 99-10298
Taxon-specific priming polymerase chain reaction (TSPP) is a powerful molecular tool for fungal diagnosis. For its application to indoor rot fungi, the internal transcribed spacer (ITS) of the ribosomal DNA (rDNA) of the main fungal species causing wood rot in European buildings was amplified with the polymerase chain reaction (PCR). The ITS region was sequenced. The complete sequences are present...
O Schmidt, U Moreth
Isolation and identification of non-decay fungi affecting the performance of alkylammonium compounds
1993 - IRG/WP 93-10020
The isolation of DDAC tolerant fungi was carried out on lumber treated with a range of antisapstain chemicals containing DDAC as one of their active ingredients. The tolerant fungi were selected by using malt media spiked with DDAC (100 and 2500 ppm). Isolations were tentatively identified into a range of fungi commonly found associated with wood deterioration (i.e. Penicillium sp. and Trichoderma...
A K Doyle, J N R Ruddick
Colonization of treated and untreated ponderosa pine exposed in Hilo, Hawaii
1995 - IRG/WP 95-20068
The rate of decay in above ground exposures is largely controlled by rainfall and temperature, factors which can be used to construct a climate index of decay hazard in above ground exposures. Developers of new biocide formulations have utilized this knowledge by establishing test sites in sub-tropical regions such as the Gulf Coast of the United States. More recently, field sites have been locate...
C M Freitag, J J Morrell, K J Archer