ISSN:
1573-5036
Keywords:
Zea mays L.
;
Nitrogen
;
Protein
;
Roots
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary When roots of five day-old maize seedlings were exposed to15N-nitrate, a constant (25–29%) proportion of the reduced15N derived from the entering15N-nitrate accumulated as insoluble15N nitrogen. Constancy was established by two hours and lasted through 12 hours at ambient15N-nitrate concentrations of 0.05 mM to 20.0 mM. Even when little15N nitrate had been reduced (〈2 μmoles), there was a linear relationship between accumulation of insoluble15N (but not accumulation or translocation of soluble reduced15N) and total reduced15N. It is proposed that protein synthesis from the entering nitrate occurs in close association with nitrate reduction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02198120
