ISSN:
1432-2048
Keywords:
Diamine oxidase
;
H2O2 synthesis (cell wall)
;
Lens (polyamine levels)
;
Pisum (polyamine levels)
;
Polyamine
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Diamine-oxidase (DAO; EC 1.4.3.6) activity and di-and polyamine levels were estimated along the epicotyl and root of light-grown and etiolated lentil (Lens culinaris Medicus) and pea (Pisum sativum L.) seedlings. The activity of DAO was higher in etiolated epicotyls than in lightgrown ones. In both species there was a positive correlation between DAO activity and the diamine (putrescine and cadaverine) levels along the whole epicotyl and root. Polyamine (spermine and spermidine) distribution seemed to be associated with the meristematic and elongating zone of the epicotyl and root. The physiological function of DAO is discussed in relation to its possible role in providing hydrogen peroxide to peroxidase-dependent reactions occurring in the cell wall.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00401018
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