1. Lytic enzymes in the autolysis of filamentous fungi.
- Author
-
Lahoz R, Reyes F, and Perez Leblic MI
- Subjects
- Aspergillus niger enzymology, Basidiomycota enzymology, Cell Wall metabolism, Fungi metabolism, Hydrogen-Ion Concentration, Hypocreales enzymology, Neurospora crassa enzymology, Penicillium enzymology, Species Specificity, Acetylglucosaminidase metabolism, Acid Phosphatase metabolism, Chitinases metabolism, Fungi enzymology, Glucan Endo-1,3-beta-D-Glucosidase metabolism, Glycoside Hydrolases metabolism, Hexosaminidases metabolism, Sucrase metabolism
- Abstract
The degrees of autolysis attained by five different genera of filamentous fungi during an incubation period of 60 days, under the same culture conditions were: 87.3% for Penicillium oxalicum; 65.9% for Neurospora crassa; 62.7% for Polystictus versicolor; 51.7% for Aspergillus niger and 23.5% for Nectria galligena. N. crassa, A. niger and P. versicolor reached the end of the autolysis during this incubation period (60 days), whereas P. oxalicum and N. galligena did not. The excretion of the lytic enzymes beta-N-acetylglucosaminidase, beta -1-3 glucanase, chitinase, invertase and acid phosphatase into the culture medium during growth and autolysis was investigated. The excretion of these enzymes was consistent with the degree of autolysis reached, the maximum excretion belonging to P. oxalicum and the minimum to N. galligena. The N. crassa invertase was excreted into the culture liquid at levels very much higher than the other enzymes studied, and at levels very much higher than the invertases excreted by the other fungi.
- Published
- 1976
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