Growth, ionic responses, and expression of candidate genes to salinity stress were examined in two perennial ryegrass accessions differing in salinity tolerance. The salinity tolerant (PI265349) and sensitive accessions (PI231595) were subjected to 75-mM NaCl for 14 days in a growth chamber. Across two accessions, salinity stress increased shoot dry weight and concentrations of malondialdehyde (MDA) and Na+ in the shoots and roots, but decreased shoot Ca2+ and root K+ concentrations. Salinity stress also increased root expressions of SOS1, PIP1, and TIP1. Plant height and chlorophyll content w...
