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

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

Influence of wood durability on the suppressive effect of increased temperature on wood decay by the brown-rot fungus Postia placenta

Holzforschung ◽  
2014 ◽  
Vol 68 (1) ◽  
pp. 123-131 ◽  
Author(s):  
Ari M. Hietala ◽  
Emil Stefańczyk ◽  
Nina Elisabeth Nagy ◽  
Carl Gunnar Fossdal ◽  
Gry Alfredsen
Keyword(s):  
Scots Pine ◽  
Marker Gene ◽  
Wood Decay ◽  
Brown Rot ◽  
Transcript Level ◽  
Suppressive Effect ◽  
Major Influence ◽  
Gene Transcript ◽  
Postia Placenta ◽  
Brown Rot Fungus

Abstract Local climate conditions have a major influence on the biological decomposition of wood. To examine the influence of different temperature regimes on wood decay caused by the brown rot fungus Postia placenta in wood with differing natural durability, sapwood (sW) and heartwood (hW) of Scots pine, inoculated mini-blocks were incubated for up to 10 weeks at temperatures conducive or above optimal to wood decay. We profiled mass loss (ML) and wood composition, and accompanying changes in wood colonization and transcript level regulation of fungal candidate genes. The suppressive effect of suboptimal temperature on wood decay caused by P. placenta appeared more pronounced in Scots pine hW with increased durability than in sW with low decay resistance. The differences between sW and hW were particularly pronounced for cultures incubated at 30°C: unlike sW, hW showed no ML, poor substrate colonization and marker gene transcript level profiles indicating a starvation situation. As brown rot fungi show considerable species-specific variation in temperature optima and ability to mineralize components that contribute to wood durability, interactions between these factors will continue to shape the fungal communities associated to wood in service.

Sign in / Sign up

Export Citation Format

Share Document