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Removal of Salt from Xylem Sap by Leaves and Stems of Guttating Plants

Removal of Salt from Xylem Sap by Leaves and Stems of Guttating Plants Abstract Although root pressure and guttation presumably result from a high concentration of salt in the root xylem, the guttation fluid is very dilute. Measurements of the osmotic potential of the guttation liquid and of exudates at various levels in guttating plants indicate that salt is removed from the xylem in the upper part of plants, particularly in the leaves. The concentration of salt solutions forced through individual leaves by an artificial root pressure has no influence on the osmotic potential of the guttation fluid. This suggests that leaves play an important role in removing salt from the xylem of guttating plants. 2 Present address: C.S.I.R.O., Irrigation Research Laboratory, Griffith, N.S.W., Australia. 1 This work was supported by NSF Grant No. GB-3934. This content is only available as a PDF. © 1966 American Society of Plant Biologists This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Physiology Oxford University Press

Removal of Salt from Xylem Sap by Leaves and Stems of Guttating Plants

Klepper, Betty; Kaufmann, Merrill R.
Plant Physiology , Volume 41 (10) – Dec 1, 1966
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References (11)

Publisher
Oxford University Press
Copyright
Copyright © 2021 American Society of Plant Biologists
ISSN
0032-0889
eISSN
1532-2548
DOI
10.1104/pp.41.10.1743
Publisher site
See Article on Publisher Site

Abstract

Abstract Although root pressure and guttation presumably result from a high concentration of salt in the root xylem, the guttation fluid is very dilute. Measurements of the osmotic potential of the guttation liquid and of exudates at various levels in guttating plants indicate that salt is removed from the xylem in the upper part of plants, particularly in the leaves. The concentration of salt solutions forced through individual leaves by an artificial root pressure has no influence on the osmotic potential of the guttation fluid. This suggests that leaves play an important role in removing salt from the xylem of guttating plants. 2 Present address: C.S.I.R.O., Irrigation Research Laboratory, Griffith, N.S.W., Australia. 1 This work was supported by NSF Grant No. GB-3934. This content is only available as a PDF. © 1966 American Society of Plant Biologists This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)

Journal

Plant Physiology – Oxford University Press

Published: Dec 1, 1966

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