Aspen Bibliography
Effects of nitrogen supplements on degradation of aspen wood lignin and carbohydrate components by Phanerochaete chrysosporium
Document Type
Article
Journal/Book Title/Conference
Applied and environmental microbiology
Volume
45
Issue
3
First Page
830
Last Page
837
Publication Date
1983
Abstract
A supplement of KH2PO4, MgSO4, CaCl2, trace elements, and thiamine accelerated the initial rate of aspen wood decay by Phanerochaete chrysosporium but did not increase the extent of lignin degradation. Asparagine, casein hydrolysate, and urea supplements (1% added N) strongly inhibited lignin degradation and weight loss. The complex nitrogen sources peptone and yeast extract stimulated lignin degradation and weight loss. Albumen and NH4Cl had intermediate effects. Conversion of [14C]lignin to 14CO2 and water-soluble materials underestimated lignin degradation in the presence of the complex N sources. The highest ratio of lignin degradation to total weight loss and the largest increase in cellulase digestibility occurred during the decay of unsupplemented wood. Rotting of aspen wood by P. chrysosporium gives smaller digestibility increases than have been found with some other white-rot fungi.
Recommended Citation
Reid, I.D., "Effects of nitrogen supplements on degradation of aspen wood lignin and carbohydrate components by Phanerochaete chrysosporium" (1983). Aspen Bibliography. Paper 4113.
https://digitalcommons.usu.edu/aspen_bib/4113