The expression profiles of genes encoding the potassium TPK channels and NHX Na+/H+ exchanger in barley under salinity and water stress conditions
DOI:
https://doi.org/10.15407/dopovidi2015.03.152Keywords:
gene expression, potassium channels, salinity stress, water stressAbstract
The influences of high salinity and water stresses on the gene expression profiles of genes encoding two-pore potassium TPK channels and NHX Na+/H+ exchanger through the time course are investigated. The constitutive gene expression levels of these genes were very low. After 8 hours of the barley shots cultivation on a medium with 10% PEG 400 (water stress), the induction of HvTPKb gene expression is observed. In comparison with HvTPKb, the expression level of HvTPKc was extremely low. The induction of HvNHX4 expression occurred after 24 hours of cultivation on 500 mM NaCl. Thus, it is shown that the salinity and water stresses can differently regulate the expression profiles of genes encoding these transporters.
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