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Physiology of halophytes
journal contribution
posted on 2023-06-08, 11:30 authored by Tim FlowersThe cellular basis of salt tolerance in halophytes depends upon the compartmentation of ions necessary for osmoregulation in vacuoles and upon osmotic adjustment of the cytoplasm by compatible solutes. The central role played by Na+ and Cl– in osmotic adjustment suggests that the transport of these ions and its regulation must be of primary importance in the physiology of the plant as a whole. There have been few investigations into the regulation of leaf ion concentrations, but such data as are in the literature suggest that limiting xylem Na+ (and Cl–) concentrations, together with continued leaf expansion, are particularly important. The role of phloem in retranslocation is uncertain due to lack of data. Decreases in transpiration rate per unit area of leaf help to lower the ion input into leaves. Any linked reductions in photosynthesis appear to be due to decreases in stomatal frequency.
History
Publication status
- Published
Journal
Plant and SoilISSN
0032-079XPublisher
Springer VerlagExternal DOI
Issue
1-3Volume
89Page range
41-56Department affiliated with
- Evolution, Behaviour and Environment Publications
Notes
Times Cited: 94 Flowers, tjFull text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-05-21Usage metrics
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