Abstract
Seedings of Vicia faba were grown for four weeks at two different light intensities (55 and 105 watts per square meter) in a saline (50 millimolar NaCl) and nonsaline nutrient solution. NaCl salinity depressed growth and restricted protein formation, CO2 assimilation, and especially the incorporation of photosynthates into the lipid fraction. Conversion of photosynthates in leaves was much more affected by salinity than was photosynthate turnover in roots. The detrimental effect of NaCl salinity on growth, protein formation, and CO2 assimilation was greater under low than under high light conditions. Plants of the high light intensity treatment were more capable of excluding Na+ and Cl− and accumulating nutrient cation species (Ca2+, K+, Mg2+) than plants grown under low light intensity. It is suggested that the improved ionic status provided better conditions for protein synthesis, CO2 assimilation, and especially for the conversion of photosynthates into lipids.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Chimiklis P. E., Karlander E. P. Light and calcium interactions in chlorella inhibited by sodium chloride. Plant Physiol. 1973 Jan;51(1):48–56. doi: 10.1104/pp.51.1.48. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Livne A., Levin N. Tissue Respiration and Mitochondrial Oxidative Phosphorylation of NaCl-Treated Pea Seedlings. Plant Physiol. 1967 Mar;42(3):407–414. doi: 10.1104/pp.42.3.407. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Nieman R. H. Expansion of Bean Leaves and its Suppression by Salinity. Plant Physiol. 1965 Jan;40(1):156–161. doi: 10.1104/pp.40.1.156. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Weissman G. S. Glutamine synthetase regulation by energy charge in sunflower roots. Plant Physiol. 1976 Mar;57(3):339–343. doi: 10.1104/pp.57.3.339. [DOI] [PMC free article] [PubMed] [Google Scholar]