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Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 1996;9(3): 303-307.
https://doi.org/10.5713/ajas.1996.303    Published online June 1, 1996.
Autolysis in the anaerobic fungus piromyces communis OTS1 : Presence of Chitinase and β-1,3-glucanase activities
M. Sakurada, D. P. Morgavi, T. Ohishi, R. Onodera
The degree of autolysis and presence of cell-wall degrading enzymes in an anaerobic ruminal fungus, Piromyces communis OTSI, grown in liquid medium, was monitored to evaluate the effect of self-digestion on fungal biomass. After a 30 days incubation period fungal dry weight decreased by 45% and the cell wall component chitin decreased by 22%. Chitinase activity detected in the supernatant was mainly of the endotype and peaked at day 6 of the incubation. 棺-1, 3-glucanase was detected from day 4 and increased throughout the incubation period. Autolysis was a slow process, and under natural conditions it is unlikely that it plays a significant role in the degradation of the spent fungal vestative stage in the rumen.
Keywords: Anaerobic Fungus; Autolysis; Chitinase Activity; 棺-1, 3-Glucanase Activity
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