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The saprotrophic wood-degrading abilities of Rigidoporus microporus

Oghenekaro, A. O. and Daniel, Geoffrey and Asiegbu, Frederick O. (2015). The saprotrophic wood-degrading abilities of Rigidoporus microporus. Silva Fennica. 49:4, 1-10
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Official URL: http://www.silvafennica.fi/article/1320

Abstract

Saprotrophic wood-decaying abilities ofRigidoporus microporus (Polyporales, Basidiomycota) syn. Rigidoporus lignosus and the structural alterations induced in wood blocks of Hevea bra-siliensis Muell. Arg were studied. Mass loss of wood blocks was analyzed after 3 and 6 months respectively and the patterns of decay by pathogenic and endophytic isolates of this fungus were investigated using light microscopy. Effects of temperature on growth of the isolates on malt extract agar were also investigated. The R. microporus isolated from a non-H. brasiliensis host caused the highest percentage mass loss (27.2% after 6 months), followed by isolates ED310 (21.1%) and M13 (15.7%), both collected from diseased H. brasiliensis plantations. The isolate initially identified as an endophyte showed very low saprotrophic wood decay capability (4.3% after 6 months). The optimal temperature for growth of the isolates was 30 °C; except for the endophytic isolate which showed highest growth at 25 °C. Wood samples degraded by the R. microporus isolates showed simultaneous attack of wood cell walls, typical of white rot fungi. Results of the study indicate variability in the wood degrading abilities of the isolates and the potential differences in their physiology are discussed. Our findings further support the need for a taxonomical revision of the Rigidoporus genus.

Authors/Creators:Oghenekaro, A. O. and Daniel, Geoffrey and Asiegbu, Frederick O.
Title:The saprotrophic wood-degrading abilities of Rigidoporus microporus
Series/Journal:Silva Fennica (0037-5330)
Year of publishing :2015
Volume:49
Number:4
Page range:1-10
Number of Pages:10
Publisher:Finnish Society of Forest Science, Finnish Forest Research Institute (Metla)
ISSN:0037-5330
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Wood Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Agrovoc terms:delignification, wood decay
Keywords:simultaneous decay, wood degradation, white rot, delignification
URN:NBN:urn:nbn:se:slu:epsilon-e-3479
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3479
Additional ID:
Type of IDID
DOI10.14214/sf.1320
ID Code:13384
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Products
Deposited By: SLUpub Connector
Deposited On:10 Jun 2016 09:17
Metadata Last Modified:08 Sep 2017 11:34

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