Salinity effects on physiological and phytochemical characteristics and gene expression of two Glycyrrhiza glabra L. populations

摘要: Abstract Glycyrrhiza glabra (licorice) is a medicinal plant with valuable specialised metabolites such as triterpene sweetener glycyrrhizin. Salinity stress the main environmental limiting growth and development. The effects of six levels NaCl (0, 100, 200, 400, 600, 800 mM) on growth, osmolyte content, oxidative markers, antioxidant enzyme activities, K+/Na+ ratio, glycyrrhizin gene expression biosynthesis (bAS, CYP88D6, CYP72A154) were investigated in licorice rhizomes two populations. results showed that salt progressively reduced parameters increased proline concentrations rhizomes. ratio significant decrease under salinity compared to controls. Salt resulted rhizomes, indicated by lipid peroxidation hydrogen peroxide elevated activities enzymes (i.e., ascorbate peroxidase superoxide dismutase). content only 100 200 mM treatments. same trend was observed bAS, CYP72A154 genes Fars population. population found have more than Khorasan But, reduction those indicate application 100 mM up-regulated key involved triterpenoid saponins directly enhanced production Accordingly, G. can be introduced halophyte plant.