SUMMARY: The activity of the NADP-linked glutamate dehydrogenase (GDH) increased in the pileus during sporophore development but remained at a low level in the parent mycelium and in the sporophore stipe. In contrast, the NAD-linked enzyme (GDH) increased in mycelium, stipe and pileus. It is suggested that the increase in GDH activity is a developmental phenomenon. In vegetative mycelia the two GDH enzymes appeared to be regulated reciprocally; GDH was subject to catabolite repression and urea derepression, while GDH was catabolite derepressed and repressed by urea. It is suggested that GDH may be the enzyme normally involved in ammonia assimilation, GDH being reserved for specific functions associated with developmental alterations in metabolism.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error