The effect of heartwood fungi of Pinus contorta var. latifolia on pinosylvin, pinosylvinmonomethyl ether, pinobanksin, and pinocembrin

1970 ◽  
Vol 48 (4) ◽  
pp. 737-747 ◽  
Author(s):  
A. A. Loman
Keyword(s):  
Optical Density ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Brown Rot ◽  
Rapid Decrease ◽  
Maximum Absorption ◽  
Fungus Flora ◽  
Coniophora Puteana ◽  
Brown Rot Fungus

The heartwood of lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) contains considerable amounts of fungitoxic phenolics, but also possesses an extensive fungus flora. Two of the most frequently isolated fungi, Peniophora pseudo-pini Weres. & Gibson and Tympanis hypopodia Nyl., effected the most rapid decrease in concentration of pinosylvin, pinosylvinmonomethyl ether, pinocembrin, and pinobanksin in lodgepole pine heartwood meal. Three mechanisms for the removal of pinosylvin were observed. The laccase-producing ascomycetes, Coryne sarcoides (Dicks. ex Fr.) Bon. and T. hypopodia, caused a decrease in optical density as well as a maximum absorption shift of pinosylvin from 310 mμ to 300 mμ. This shift could be related to the appearance of a new compound which absorbed at 300 mμ. Three laccase-producing basidiomycetes, P. pseudo-pini, Stereum sanguinolentum Alb. & Schw. ex Fr., and Fomes pini (Thore ex Fr.) Lloyd, caused decreases in the concentration of pinosylvin that were concurrent with red stain formation in infected heartwood meal, but were not associated with maximum absorption shifts. The non-laccase-producing brown rot fungus, Coniophora puteana Schum. ex Fr., caused a maximum absorption shift of pinosylvin from 310 to 320 mμ. However, the concentration of altered pinosylvin did not decrease below that of pinosylvin in the control. All fungi were living at the conclusion of the experiment.

Micromorphological characteristics of decayed wood and laccase produced by the brown-rot fungus Coniophora puteana

2004 ◽  
Vol 50 (3) ◽  
pp. 281-284 ◽  
Author(s):  
Kwang Ho Lee ◽  
Seung Gon Wi ◽  
Adya P. Singh ◽  
Yoon Soo Kim
Keyword(s):  
Brown Rot ◽  
Decayed Wood ◽  
Coniophora Puteana ◽  
Brown Rot Fungus

Characterisation of a Soft Rot-Like Decay Pattern Caused by Coniophora puteana (Schum.) Karst. in Sapelli Wood (Entandrophragma cylindricum Sprague)

Holzforschung ◽  
2001 ◽  
Vol 55 (6) ◽  
pp. 573-578 ◽  
Author(s):  
G. Kleist ◽  
U. Schmitt
Keyword(s):  
Lignin Degradation ◽  
Uv Spectroscopy ◽  
Brown Rot ◽  
Soft Rot ◽  
High Moisture ◽  
Coniophora Puteana ◽  
Transmission Electron ◽  
Brown Rot Fungus ◽  
Decay Pattern ◽  
Microfibrillar Angle

Summary The decay patterns of brown and soft rot fungi in Sapelli wood (Entandrophragma cylindricum Sprague), with respect to natural durability, were examined by light and transmission electron microscopy as well as UV spectroscopy. Analyses revealed that the typical brown rot fungus Coniophora puteana can cause a soft rot-like decay in the sapwood of Sapelli at high moisture contents of approx. 100%. In accordance with the decay pattern of the typical soft rot fungus Chaetomium globosum, the hyphae of C. puteana penetrated the S2 wall of fibres and formed characteristic rhomboidal cavities orientated parallel to the microfibrillar angle. However, these cavities were larger in diameter (3.9 μm ± 0.9) than those formed by C. globosum (2.1 μm ± 0.5) and with a distinct interspace between the hyphae and surrounding walls. Hyphae of C. globosum were directly attached to the undecayed secondary wall. No lignin degradation for both fungi in close vicinity to the cavities was observed, as evidenced by UV spectroscopy. The inclusion of microscopy for definitive decay type identification is recommended.

scholarly journals Deterioration effects of wet environments and brown rot fungus Coniophora puteana on pine wood in the archaeological site of Biskupin (Poland)

2018 ◽  
Vol 138 ◽  
pp. 132-146 ◽  
Author(s):  
Jeannette Jacqueline Łucejko ◽  
Marco Mattonai ◽  
Magdalena Zborowska ◽  
Diego Tamburini ◽  
Grzegorz Cofta ◽  
...  
Keyword(s):  
Brown Rot ◽  
Archaeological Site ◽  
Pine Wood ◽  
Coniophora Puteana ◽  
Brown Rot Fungus

Characterisation of the initial degradation stage of Scots pine (Pinus sylvestris L.) sapwood after attack by brown-rot fungus Coniophora puteana

2011 ◽  
Vol 22 (4) ◽  
pp. 719-728 ◽  
Author(s):  
Ilze Irbe ◽  
Ingeborga Andersone ◽  
Bruno Andersons ◽  
Guna Noldt ◽  
Tatiana Dizhbite ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Brown Rot ◽  
Coniophora Puteana ◽  
Brown Rot Fungus

scholarly journals DECAY OF LODGEPOLE PINE IN TWO FOOTHILLS SECTIONS OF THE BOREAL FOREST IN ALBERTA

1963 ◽  
Vol 39 (4) ◽  
pp. 422-435 ◽  
Author(s):  
A. A. Loman ◽  
G. D. Paul
Keyword(s):  
Boreal Forest ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
The Other ◽  
Decay Fungi ◽  
Coniophora Puteana ◽  
Considerable Loss

Cull in lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) is highly variable in the B19a and B19c Sections of the Boreal Forest in Alberta, depending upon whether the wood is used for pulp or sawed products. Sixty-nine per cent of 2,436 sample trees were suspected of containing volumes of red heartwood stain and advanced decay on the basis of the presence of external defects. Fifty-three per cent of the suspects were sound, 36 per cent had red heartwood stain and 11 per cent were partly or entirely decayed. Sixty per cent of the trees without external defects were sound, and 40 per cent had red heartwood stain. In cubic-foot measure decay was unimportant in stands less than 100 years old. In older stands a few infested trees accounted for most of the decay. In foot-board measure 62 of 2,746 sample trees were totally culled and 122 were partially culled. Considerable loss occured in 90-year old and older stands near Whitecourt and in 170-year old stands in the other sample areas. Fomes pini (Thore) Lloyd and Polyporus tomentosus Fr. were the principal fungi isolated from white pitted trunk rots. P. tomentosus and Flammula alnicola (Fr.) Kummer were isolated most frequently from white pitted root and butt rots, and Coniophora puteana (Schum. ex Fr.) Karst. from brown cubical root and butt rots. Peniophora pseudo-pini Weres. and Gibson was the most frequently isolated fungus but was always associated with red heartwood stain. Scars of all kinds were the most important points of entry for decay fungi.

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