ISSN:
1432-072X
Keywords:
Phormidium uncinatum
;
Hydrogen peroxide production
;
Nitrification
;
Ammonia oxidation
;
Hydroxylamine metabolism
;
Detoxification
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract On transition from nitrogen starvation to ammonia or ammonia/glutamine sufficiency Phormidium uncinatum produces high amounts of H2O2, which is consumed by several oxidative reactions catalyzed by thylakoid membrane bound enzymes. These include: oxidation of glutamine to free hydroxylamine, of ammonia to nitrite, of bound hydroxylamine to nitrite, and dismutation of free hydroxylamine to ammonia and nitrite. A possible role of these transformations for detoxification is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00248712