Metabolomic and transcriptomic analyses reveal the reasons why Hordeum marinum has higher salt tolerance than Hordeum vulgare

Sea barley (Hordeum marinum) is a wild species belonging to halophytes, while other Hordeum species are glycophytes. In this study, we aimed to understand molecular differences of transcriptomic and metabolomic responses and uncover complex mechanisms underlying salt tolerance between H. marinum and H. vulgare. Physiological studies revealed that sea barley accession H559 had less growth inhibition, higher root K+ concentration, lower shoot Na+...