Salt Tolerance

Salt Tolerance


(also salt resistance), in plants, the ability to grow on saline soils. The most salt-tolerant plants are halo-phytes; however, even these plants are very sensitive to sudden increases in salinity. Any plant can adapt to high salt content in the process of ontogeny. Adaptation depends on the type of salts. With chloride salinity, plants become fleshy, or succulent; with sulfate salinity, they usually acquire a xeromorphic structure (seeXEROMORPHISM).

The principal cause of damage to plants on saline soils is the toxicity of salts—not the high osmotic pressure, as was believed before the 20th century. When cultivating plants on soils with an increased content of chlorides, sulfates, or carbonates, the seeds should first be soaked in appropriate salt solutions to increase salt tolerance. With this kind of hardening, the protoplasm’s permeability to salts is lowered, its threshhold of coagulation by salts is raised, and its metabolism is changed. Plants growing on saline soils have demonstrated changes in nucleic-acid, protein, carbohydrate, and phosphorus metabolism.


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References in periodicals archive ?
Changes in water deficit saturation and photosynthetic pigments of Alfafa populations under salinity and assessment of proline role in salt tolerance. Agricultural Science Research Journals, v.3, n.1, p.29-35, 2013.
The salt tolerant plants (halophytes), physiology, biochemistry and ecophysiology; cash-crop halophytes was his research interest topics and through his research, he was engaged in development of varieties of halophytes for special uses, salt tolerance mechanisms, seed biology of halophytes.
This two-day event would bring together national and international researchers, academicians, administrators, students and farmers involved in salt tolerance related research giving the opportunity to discuss and share expertise relevant to social and economic impacts of salinization.
It is also reported that lower Na, higher K and K/Na ratio provides salt tolerance in rice (Tatar and Gevrek, 2007; Tatar et al., 2010; Hussain et al., 2013; Zafar et al., 2015).
Agriculture and soil scientists, biochemists, and other contributors deal with management issues of water logging and soil salinity, often twinned problems, covering the management of saline/sodic stress: field practices, physiological and molecular innovations to enhance salt tolerance, adaptations and screening of plants under water logging and salinity stresses, and non-conventional and high-value crops for salt-affected lands.
This warrants the need for developing and using more drought and salt-tolerant cultivars and species by implementing an effective, large-scale crop improvement programme for adaptation and salt tolerance, they said.
The Nexgen technology can also be used to introduce other economically important traits into crops around the world including drought and salt tolerance, pest and disease resistance, and improve productivity.
The bile salt tolerance was done according to method described by Walker and Gilliland 9.
If not, which high value crops can be safely irrigated using saline water?Beets, bell pepper, broccoli, cabbage, sukuma wiki, loquats, spinach and tomatoes have high salt tolerance and can be grown with saline water.
Biotechnology for salt tolerance and/or enhanced water use in plants-interesting science or a pathway to the future?
Proline and glycine betaine can be used to check the salt tolerance ability of different plant species (Ahmad et al., 2009).