Variations in Leaf Soluble Amino Acids and Ammonium Content in Subtropical Seagrasses Related to Salinity Stress
- 1 January 1986
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 80 (1) , 283-286
- https://doi.org/10.1104/pp.80.1.283
Abstract
A survey of leaf soluble amino acids was conducted for four subtropical seagrasses grown at several salinities. Proline functioned as an organic osmoticum in Halodule wrightii Aschers., Thalassia testudinum Banks ex Koenig, and Ruppis maritima L., while alanine functioned in an osmoregulatory capacity in Halophila engelmanni Aschers. When light- and salinity-induced variations in leaf NH4 and amide-N levels were compared in Halodule, Thalassia, and Halophila, ability to regulate leaf NH4 levels was correlated with osmoregulatory capacity and maintenance of selected amino acid contents.Keywords
This publication has 5 references indexed in Scilit:
- Inositol and Sugars in Adaptation of Tomato to SaltPlant Physiology, 1985
- Effect of Methionine Sulfoximine on the Accumulation of Ammonia in C3 and C4 LeavesPlant Physiology, 1983
- Living with Water Stress: Evolution of Osmolyte SystemsScience, 1982
- Nitrogen Nutrition and Xylem Transport of Nitrogen in Ureide-producing Grain LegumesPlant Physiology, 1980
- Sodium Chloride Effect on Dark Fixation of CO2 by Marine & Terrestrial PlantsPlant Physiology, 1962