Rice yields around the world are negatively
affected by salinisation resulting from over-irrigation.
Many locally important rice cultivars with valuable
fl avour characteristics are particularly susceptible to
salt-stress, which hinders their growth and development
by inhibiting various metabolic activities, by reducing
cell expansion, and in some cases by triggering
programmed cell death (1). By reducing the water uptake
of roots, salts cause ionic, osmotic and nutrient stresses.
Cellular responses to these stresses, and to subsequent
secondary stresses such as oxidative stress, add to
the complexity of the salt tolerance trait. Molecular
studies have revealed that salt tolerance is controlled by
interactions between several independently regulated
but temporally and spatially coordinated processes (2).
Rice yields around the world are negatively affected by salinisation resulting from over-irrigation. Many locally important rice cultivars with valuable fl avour characteristics are particularly susceptible to salt-stress, which hinders their growth and development by inhibiting various metabolic activities, by reducing cell expansion, and in some cases by triggering programmed cell death (1). By reducing the water uptake of roots, salts cause ionic, osmotic and nutrient stresses. Cellular responses to these stresses, and to subsequent secondary stresses such as oxidative stress, add to the complexity of the salt tolerance trait. Molecular studies have revealed that salt tolerance is controlled by interactions between several independently regulated but temporally and spatially coordinated processes (2).
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