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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Morgan M A, Jackson W A and Volk R J 1985 J. Exp. Bot. 36, 859–869.
Morgan M A, Volk R J and Jackson W A 1985 Plant Physiol. 77, 718–721.
Morgan M A, Jackson W A and Volk R J 1985 Plant Sc. 38, 185–191.
Pace G M, MacKown C T and Volk R J 1982 Plant Physiol. 69, 32–36.
Pan W L, Jackson W A and Moll R H 1985 Plant Physiol. 77, 560–566.
Author information
Authors and Affiliations
Additional information
Paper No. 9764 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh, NC, 27695-7619, USA. This research was supported by Grant No. PCM-8118661 from the National Science Foundation.
Use of trade names in this publication does not imply endorsement by the North Carolina Agricultural Research Service of the product's name or criticisms of similar ones not mentioned.
Rights and permissions
About this article
Cite this article
Morgan, M.A., Jackson, W.A., Pan, W.L. et al. Partitioning of reduced nitrogen derived from exogenous nitrate in maize roots: Initial priority for protein synthesis. Plant Soil 91, 343–347 (1986). https://doi.org/10.1007/BF02198120
Issue Date:
DOI: https://doi.org/10.1007/BF02198120