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Influence of nitrogen nutrition and metabolism on ammonia volatilization in plants

Influence of nitrogen nutrition and metabolism on ammonia volatilization in plants Barley (Hordeum vulgare L. cv. Golf) was grown in solution culture with controlled nitrogen availability in order to study the influence of nitrogen nutrition on ammonia emission from the leaves. Ammonia emission measured in cuvettes connected to an automatic NH3 monitor was close to zero for nitrate grown plants but increased to 0.9–1.3 nmol NH3 m-2 leaf area s-1 after 3–5 days of ammonium nutrition. Increasing concentrations from 0.5 to 10 mM NH4 + in the root medium increased NH3 emission from the shoots, root glutamine synthetase activity and NH4 + concentrations in apoplast, xylem sap and bulk tissue, while apoplastic pH values decreased. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nutrient Cycling in Agroecosystems Springer Journals

Influence of nitrogen nutrition and metabolism on ammonia volatilization in plants

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References (33)

Publisher
Springer Journals
Copyright
Copyright © 1998 by Kluwer Academic Publishers
Subject
Environment; Soil Science & Conservation
ISSN
1385-1314
eISSN
1573-0867
DOI
10.1023/A:1009796610912
Publisher site
See Article on Publisher Site

Abstract

Barley (Hordeum vulgare L. cv. Golf) was grown in solution culture with controlled nitrogen availability in order to study the influence of nitrogen nutrition on ammonia emission from the leaves. Ammonia emission measured in cuvettes connected to an automatic NH3 monitor was close to zero for nitrate grown plants but increased to 0.9–1.3 nmol NH3 m-2 leaf area s-1 after 3–5 days of ammonium nutrition. Increasing concentrations from 0.5 to 10 mM NH4 + in the root medium increased NH3 emission from the shoots, root glutamine synthetase activity and NH4 + concentrations in apoplast, xylem sap and bulk tissue, while apoplastic pH values decreased.

Journal

Nutrient Cycling in AgroecosystemsSpringer Journals

Published: Oct 22, 2004

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