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Publication Type J
Authors Moseki, B. and J. C. Buru
Title Ionic and water relations of Sesuvium portulacastrum (L.)
Source Scientific Research and Essays
Author Keywords S. portulacastrum halophyte proline salinity maritima l dum salt tolerance free proline halophytes salinity stress growth
Abstract The aim of this study was to assess the growth response of Sesuvium portulacastrum (L.) (a halophyte) to various NaCl concentrations and hence determine how it is adapted to grow optimally under saline conditions. S. portulacastrum was grown hydroponically in various NaCl concentrations (that is, 0, 100, 200, 400 and 600 mol m(-3) NaCl). It was found to exhibit a growth pattern typical of dicotyledonous halophytes. It attained maximal growth at 200 mol m(-3) NaCl concentration in hydroponic cultures. It accumulated large concentrations of Na(+) and Cl-with the leaves having the highest ion content. These ions are believed to be sequestered in the vacuole. S. portulacastrum also accumulated proline in high concentrations and this proline appeared to adjust the cytoplasmic ion concentration to balance that of the vacuole.
Author Address [Moseki, B; Buru, JC] Univ Botswana, Dept Biol Sci, Gaborone, Botswana Moseki, B (reprint author), Univ Botswana, Dept Biol Sci, Private Bag UB 00704, Gaborone, Botswana, Botswana mosekib@mopipi.ub.bw
ISSN 1992-2248
ISBN 1992-2248
29-Character Source Abbreviation Sci. Res. Essays
Publication Date Jan
Year Published 2010
Volume 5
Issue 1
Beginning Page 35-40
Unique Article Identifier WOS:000275398500005
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