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Publication Type J
Authors Freitas, H. and S. W. Breckle
Title IMPORTANCE OF BLADDER HAIRS FOR SALT TOLERANCE OF FIELD-GROWN ATRIPLEX SPECIES FROM A PORTUGUESE SALT-MARSH
Source Flora
Author Keywords atriplex chenopodiaceae field plants bladder hairs salt recretion ionic relations land plants nitrate nitrogen leaves compartments assimilation physiology halophytes salinity
Abstract Plants of Atriplex prostata, Halimione portulacoides and Atriplex halimus were harvested several times from field populations of the portuguese coast. Concentrations of Na+, K+, Cl- and NO3- were analyzed in plants and bladder hairs. Sodium and chloride accumulation in leaves and stems of the three species was evident. Sodium was especially accumulated in A. prostrata and chloride in A. halimus and H. portulacoides. The contents showed a clear increment during the summer months. Accumulation of nitrate was not observed and its assimilation seemed similar within the three species. For the three species bladder hairs are an important complement for osmotic adjustment and salt tolerance. However. bladders of A. halimus and H. portulacoides exhibited much higher ion contents than bladders of A. prostrata, indicating a higher activity mainly for sodium and chloride recretion.
Author Address UNIV BIELEFELD,FAC BIOL,DEPT ECOL,POB 100131,W-4800 BIELEFELD,GERMANY. UNIV COIMBRA,FAC SCI,DEPT BOT,P-3400 COIMBRA,PORTUGAL.
ISSN 0367-2530
ISBN 0367-2530
29-Character Source Abbreviation Flora
Publication Date Dec
Year Published 1992
Volume 187
Issue 3-4
Beginning Page 283-297
Unique Article Identifier WOS:A1992KD38600006
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