scholarly journals Effects of copper and silver nanoparticles on growth of selected species of pathogenic and wood-decay fungi in vitro

2018 ◽  
Vol 94 (02) ◽  
pp. 109-116 ◽  
Author(s):  
Marta Aleksandrowicz-Trzcińska ◽  
Adam Szaniawski ◽  
Jacek Olchowik ◽  
Stanisław Drozdowski
Keyword(s):  
Silver Nanoparticles ◽  
Wood Decay ◽  
Decay Fungi ◽  
Wood Decay Fungi

Aliphatic acids as spore germination inhibitors of wood-decay fungi in vitro

1985 ◽  
Vol 63 (2) ◽  
pp. 337-339 ◽  
Author(s):  
Elmer L. Schmidt
Keyword(s):  
Spore Germination ◽  
Germ Tube ◽  
White Rot Fungi ◽  
Wood Decay ◽  
White Rot ◽  
Malt Extract ◽  
Decay Fungi ◽  
Aliphatic Acids ◽  
Wood Decay Fungi

Influences of eight saturated aliphatic acids (C5–C10, C12, and C16) on basidiospores of four isolates of wood-decay fungi (Poria tenuis and Trametes hispida, white rot fungi, and two isolates of the brown rot fungus Gloeophyllum trabeum) were observed in vitro. Spore responses after 24 h on malt extract agar containing 10, 102 or 103 ppm of each acid included normal germination, delay of germ tube emergence, vacuolation and degeneration of spore cytoplasm, and prevention of germ tube development without spore destruction. Acids of chain length C5–C10 prevented spore germination and killed spores of all fungi at concentrations of 20–50 ppm in media, whereas other acids tested were less active. Spore germination assay of decay fungi may prove useful as a screening tool to compare potency of wood preservatives.

scholarly journals The Composition, Anti-mildew and Anti-wood-decay Fungal Activities of the Leaf and Fruit Oils of Juniperus Formosana from Taiwan

2013 ◽  
Vol 8 (9) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Yu-Chang Su ◽  
Kuan-Ping Hsu ◽  
Eugene I-Chen Wang ◽  
Chen-Lung Ho
Keyword(s):  
Essential Oil ◽  
Wood Decay ◽  
Decay Fungi ◽  
Active Source ◽  
Wood Decay Fungi ◽  
Leaf Oil ◽  
Fruit Oil ◽  
Type Apparatus

In this study, anti-mildew and anti-wood-decay fungal activities of the leaf and fruits essential oil and its constituents from Juniperus formosana were evaluated in vitro against seven mildew fungi and four wood decay fungi, respectively. The main compounds responsible for the anti-mildew and anti-wood-decay fungal activities were also identified. The essential oil from the fresh leaves and fruits of J. formosana were isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS, respectively. The leaf oil mainly consisted of α-pinene (41.0%), limonene (11.5%), α-cadinol (11.0%), elemol (6.3%), and β-myrcene (5.8%); the fruit oil was mostly α-pinene (40.9%), β-myrcene (32.4%), α-thujene (5.9%) and limonene (5.9%). Comparing the anti-mildew and anti-wood-decay fungal activities of the oils suggested that the leaf oil was the most effective. For the anti-mildew and anti-wood-decay fungal activities of the leaf oil, the active source compounds were determined to be α-cadinol and elemol.

scholarly journals Relative In Vitro Wood Decay Resistance of Sapwood from Landscape Trees of Southern Temperate Regions

HortScience ◽  
2010 ◽  
Vol 45 (3) ◽  
pp. 401-408 ◽  
Author(s):  
Manuela Baietto ◽  
A. Dan Wilson
Keyword(s):  
Weight Loss ◽  
Wood Decay ◽  
Dry Weight ◽  
Decay Resistance ◽  
Decay Rates ◽  
Heterobasidion Annosum ◽  
Decay Fungi ◽  
Wood Decay Fungi ◽  
Landscape Trees

The development of wood decay caused by 12 major root-rot and trunk-rot fungi was investigated in vitro with sapwood extracted from nine ornamental and landscape hardwood and conifer species native to southern temperate regions of North America, Europe, and the lower Mississippi Delta. Wood decay rates based on dry weight loss for 108 host tree–wood decay fungi combinations were compared at 21 °C over 1-year and 2-year incubation periods in the absence of tree-resistance mechanisms. Strains of Armillaria mellea, Ganoderma lucidum, and Heterobasidion annosum exhibited the highest decay potential in most tree species tested. The order of fungi causing the greatest decay varied over time as a result of temporal changes in decay-rate curves. Relative wood durability or resistance to decay generally was greater in gymnosperm than in angiosperm wood types. Quercus nuttallii, Fraxinus pennsylvanica, and Quercus lyrata sustained the highest levels of decay by all fungi. Northern white cedar (Thuja occidentalis) sapwood was most resistant to decay by all rot-fungi tested, sustaining only limited weight loss after 1 and 2 years of decay, although sapwood of Pinus taeda, Liquidambar styraciflua, and Platanus occidentalis had relatively low levels of decay after 2 years. These results in combination with data from portable decay-detection devices provide useful information for the management of tree breakages or failures resulting from wood decay fungi in hazardous landscape trees. Some potential landscaping applications for tree evaluations, risk assessments, and selections for tree-replacement plantings are discussed.

scholarly journals Attempts at active protection of Inonotus obliquus by inoculating birches with its mycelium

2013 ◽  
Vol 41 (2) ◽  
pp. 305-312 ◽  
Author(s):  
Jacek Piętka ◽  
Andrzej Grzywacz
Keyword(s):  
Wood Decay ◽  
Fungal Mycelium ◽  
Inonotus Obliquus ◽  
Decay Fungi ◽  
Wood Decay Fungi ◽  
Birch Trees ◽  
Active Protection ◽  
Artificial Introduction ◽  
Forest District

Practical application of active protection methods of <em>Inonotus obliquus</em> (Fr.) Pilát. was examined. Thirty live birches and 15 birch stem sections were artificially inoculated with the fungal mycelium in the Mińsk Forest District (E Poland). The mycelium of <em>I. obliquus</em> was not recorded in the felled test trees and birch stem sections upon the completion of the experiment. Artificial introduction of <em>I. obliquus</em> in the natural environment faces significant problems caused by strong competition from other birch wood-decay fungi. As <em>in vitro</em> studies show (individual biotic effect determination), the fungi examined, occurring on birch trees in nature, are dominant species in relation to <em>I. obliquus</em>.

scholarly journals Structure-activity relationships of cadinane-type sesquiterpene derivatives against wood-decay fungi

Holzforschung ◽  
2005 ◽  
Vol 59 (6) ◽  
pp. 620-627 ◽  
Author(s):  
Chi-Lin Wu ◽  
Shih-Chang Chien ◽  
Sheng-Yang Wang ◽  
Yueh-Hsiung Kuo ◽  
Shang-Tzen Chang
Keyword(s):  
Antifungal Activity ◽  
Wide Spectrum ◽  
Wood Decay ◽  
Wood Preservatives ◽  
Decay Fungi ◽  
Structure Activity Relationships ◽  
Chemical Structures ◽  
Structure Activity ◽  
Wood Decay Fungi

Abstract Cadinane-type sesquiterpenes have a wide spectrum of biological activity, but their use as wood preservatives and the structure-activity relationships of their derivatives have not yet been reported. A total of 13 compounds were synthesized from T-cadinol, T-muurolol, and α-cadinol and their chemical structures were confirmed by IR, MS, and 1H and 13C NMR. The antifungal properties of 16 compounds against three wood-decay fungi were evaluated in vitro. α-Cadinol showed strong antifungal activity against Lenzites betulina, Trametes versicolor, and Laetiporus sulphureus (total mean IC50 0.10 mM). Among the derivatives synthesized, 3β-ethoxy-T-muurolol (0.24 mM), 4ξH-cadinan-10β-ol (0.25 mM), 4ξH-muurolan-10β-ol (0.29 mM), and 4ξH-cadinan-10α-ol (0.25 mM) showed good antifungal activity against all fungi tested. Correlation was observed between the antifungal activity of the compounds tested and log P. Furthermore, the presence of an unsaturated double bond and oxygen-containing functional groups in the compounds plays a key role in their antifungal activity. The stereo configuration of cadinane-type sesquiterpenes also influences their antifungal activity. Understanding how the structure of natural compounds relates to their antifungal function is important and may facilitate their application as novel wood preservatives.

scholarly journals Composition, in vitro Cytotoxicity, Anti-mildew and Anti-wood-decay Fungal Activities of the Bark Essential Oil of Cunninghamia lanceolata var. konishii from Taiwan

2018 ◽  
Vol 13 (6) ◽  
pp. 1934578X1801300
Author(s):  
Yu-Chang Su ◽  
Kuang-Ping Hsu ◽  
Chen-Lung Ho
Keyword(s):  
Essential Oil ◽  
Human Cancer ◽  
Wood Decay ◽  
In Vitro Cytotoxicity ◽  
Cunninghamia Lanceolata ◽  
Decay Fungi ◽  
Human Cancer Cell Lines ◽  
Wood Decay Fungi ◽  
Type Apparatus

In this study, cytotoxicity, anti-mildew and anti-wood-decay fungal activities of the bark essential oil and its constituents from Cunninghamia lanceolata var. konishii were evaluated in vitro against three human cancer cell lines, seven mildew fungi, and four wood decay fungi, respectively. The main compounds responsible for the cytotoxicity, anti-mildew, and anti-wood decay fungal activities were also identified. The essential oil from the barks of C. lanceolata var. konishii was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS, respectively. The bark oil mainly consisted of ferruginol (15.1%), β-caryophyllene (11.2%), α-cadinol (10.9%) and cedrol (10.1%). The essential oil exhibited cytotoxic activity against human oral, liver, and lung cancer cells. The active source compounds were α-cadinol, cedrol, β-caryophyllene, and ferruginol. The bark oil was shown to have excellent anti-mildew and anti-wood-decay fungal activities, the active compounds being evaluated as α-cadinol, cedrol, and ferruginol.

scholarly journals In vitro evaluation of biocontrol agents and fungicides on wood decay fungiganoderma associated with mortality of tree legumes

2017 ◽  
Vol 6 (2) ◽  
pp. 31-35 ◽  
Author(s):  
M Bhadra ◽  
A Khair ◽  
MA Hossain ◽  
MM Sikder
Keyword(s):  
Growth Inhibition ◽  
Mycelial Growth ◽  
Biocontrol Agent ◽  
Wood Decay ◽  
Dual Culture ◽  
Trichoderma Spp ◽  
Decay Fungi ◽  
Trichoderma Species ◽  
Wood Decay Fungi

An experiment was conducted to isolate a number of biocontrol agent- Trichoderma spp. from infected spawn packets of oyster mushroom at National Mushroom Development and Extension Centre, Savar, Dhaka, Bangladesh. These bio-control agents were used as antagonist against four wild wood decay fungi of Ganoderma, viz., G. lucidum-1, G. lucidum-2, G. lucidum-3, G. applanatum and two cultivated G. lucidum-4, G.lucidum-6 under in vitro condition. An in vitro trial of Trichoderma spp. against Ganoderma were performed by dual culture, by treating with volatile, non-volatile and naturally untreated metabolites of bio-control agents. In dual culture, all the Trichoderma species showed 70- 100% mycelia inhibition of G. lucidum-1 and G. lucidum-2, 55.6-100% inhibition of G. lucidum-3, 20-66.7% of G. applanatum, 100% of G. lucidum-5, 75-100% of G. lucidum-6. Effects of heat killed extracts of Trichoderma spp. on growth of G. lucidum-2 (wild) and G. lucidum-6 (cultivated) were also evaluated. Fungicides Bavistin and Dithane M-45 were also used to investigate the mycelial growth inhibition of Ganoderma spp.Int. J. Agril. Res. Innov. & Tech. 6 (2): 31-35, December, 2016

Synthesis of N-(3-Rosin Acyloxy-2-Hydroxyl) Propyl-N,N Diethanolamine and its Anti-Fungal Activity

2011 ◽  
Vol 280 ◽  
pp. 124-127 ◽  
Author(s):  
Tao Liang ◽  
Shuang Yue Li ◽  
Shu Jun Li ◽  
Li Jun Zhang
Keyword(s):  
Chemical Structure ◽  
Wood Decay ◽  
Raw Material ◽  
Liquid Chromatography Mass Spectrometry ◽  
Decay Fungi ◽  
Fungal Activity ◽  
Amide Derivative ◽  
Wood Decay Fungi ◽  
Anti Fungal

Rosin was used as a raw material to prepare N-(3-rosin acyloxy-2-hydroxyl) propyl-N,N diethanolamine. First, rosin was modified with epoxy chloropropane. Then the modified rosin reacted with diethanolamine and N-(3-rosin acyloxy-2-hydroxyl) propyl-N, N diethanolamine was produced under the following conditions: modified rosin and diethanolamine mole ratio of 1:2, reaction temperature of 78°C, and reaction time of 2.5 h. The chemical structure of the product as a rosin amide derivative was identified by Fourier transform infrared spectroscopy (FTIR) and liquid chromatography-mass spectrometry (LC-MS) method. The anti-fungal activity of this rosinyl tertiary amine was determined in vitro against wood decay fungi, Trametes versicolor, Gloeophyllum trabeum and mould fungi, Aspergillus niger and Paecilomyces variot Bainier. The anti-fungal experiment results signified that N-(3-rosin acyloxy-2-hydroxyl) propyl-N,N diethanolamine was active to these fungi at a certain concentration.

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