Does shoot water status limit leaf expansion of nitrogen-deprived barley?

Dodd, IC, Munns, R and Passioura, JB (2002) Does shoot water status limit leaf expansion of nitrogen-deprived barley?. Journal of Experimental Botany, 53 375: 1765-1770. doi:10.1093/jxb/erf030

Author Dodd, IC
Munns, R
Passioura, JB
Title Does shoot water status limit leaf expansion of nitrogen-deprived barley?
Journal name Journal of Experimental Botany   Check publisher's open access policy
ISSN 0022-0957
Publication date 2002-01-01
Sub-type Article (original research)
DOI 10.1093/jxb/erf030
Open Access Status Not Open Access
Volume 53
Issue 375
Start page 1765
End page 1770
Total pages 6
Place of publication Oxford, England
Publisher Oxford Univ Press
Language eng
Subject C1
270402 Plant Physiology
620102 Barley
Abstract The role of shoot water status in mediating the decline in leaf elongation rate of nitrogen (N)-deprived barley plants was assessed. Plants were grown at two levels of N supply, with or without the application of pneumatic pressure to the roots. Applying enough pressure (balancing pressure) to keep xylem sap continuously bleeding from the cut surface of a leaf allowed the plants to remain at full turgor throughout the experiments. Plants from which N was withheld required a greater balancing pressure during both day and night. This difference in balancing pressure was greater at high (2.0 kPa) than low (1.2 kPa) atmospheric vapour pressure deficit (VPD). Pressurizing the roots did not prevent the decline in leaf elongation rate induced by withholding N at either high or low VPD. Thus low shoot water status did not limit leaf growth of N-deprived plants.
Keyword Plant Sciences
Evaporative Demand
Leaf Expansion
Water Status
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 14 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 15 times in Scopus Article | Citations
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Created: Wed, 15 Aug 2007, 03:15:34 EST