Factors involved in the regulation of a ligninase activity in Phanerochaete chrysosporium

Journal Article · Fri Feb 01 00:00:00 EST 1985 · Appl. Environ. Microbiol.; (United States)

OSTI ID:5676264

Faison, B D; Kikr, T K

The regulation of an H/sub 2/O/sub 2/-dependent ligninolytic activity was examined in the wood decay fungus Phanerochaete chrysosporium. The ligninase appears in cultures upon limitation of nitrogen or carbohydrate and is suppressed by excess nutrients, by cycloheximide, or by culture agitation. Activity is increased by idiophasic exposure of cultures to 100% O/sub 2/. Elevated levels of ligninase and in some cases, of extracellular H/sub 2/O/sub 2/ production are detected after brief incubation of cultures with lignins or lignin substructure models, with the secondary metabolite veratryl alcohol, or with other related compounds. It is concluded that lignin degradation (lignin to CO/sub 2/) by this organism is regulated in part at the level of the ligninase, which is apparently inducible by its substrates or their degradation products. 29 references.

• Research Organization: Dept. of Agriculture Forest Service, Madison, WI
• OSTI ID: 5676264
• Journal Information: Appl. Environ. Microbiol.; (United States), Vol. 49:2
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
LIGNIN
BIODEGRADATION
PHANEROCHAETE
ENZYME ACTIVITY
CULTURE MEDIA
ENZYMES
HYDROGEN PEROXIDE
NITROGEN
NUTRIENTS
CARBOHYDRATES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
FUNGI
HYDROGEN COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
PLANTS
POLYSACCHARIDES
SACCHARIDES
550700* - Microbiology