@ Eetala, under exposure to salinity, the barley plants adjusts its water potential by losing water, which causes a decrease in osmotic potential and turgor. This induces a signal that triggers adaptive responses to salinity. Therefore, barley is a salt tolerant crop.
The mechanisms which contribute to high salt tolerance in barley are
1. It's capacity to balance high cytosolic potassium and sodium ratio
2. Extrusion of sodium into vacuole across tonoplast membrane
3. Extrusion of sodium into the external medium across plasma membrane
In addition to this increased sodium/hydrogen antiporter activity upon addition of sodium in roots of barley. In total multiple mechanisms involved in adaptation of barley to saline condition.
I agree with @Trarafdar's and @Bhargavi's answers … Read more
it has better osmatic adjustment capacity and homeostasis through several mechanisms
Main things is to maintain, Na to K ratio in plant, and it has better ability to with better functioning of genes related with K and Na
under exposure to salinity, the barley plants adjusts its water potential by losing water, which causes a decrease in osmotic potential and turgor. This induces a signal that triggers adaptive responses to salinity. Therefore, barley is a salt tolerant crop.
Barley plants regulate its water potential by losing water, which alters a decrease in osmotic potential and turgor.
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