Effect of exogenous phytohormones treatment on glycyrrhizic acid accumulation and preliminary exploration of the chemical control network based on glycyrrhizic acid in root of Glycyrrhiza uralensis

ABSTRACT One-year-old Glycyrrhiza uralensis Fisch. ex DC, Fabaceae, was treated with three exogenous phytohormones in June and July, namely gibberellin, auxin (indole-3-acetic acid), methyl jasmonate at different concentrations. Control plants were treated with water. Roots of controls and hormones-treated G. uralensis plants were harvested at different times, and the contents of seven main chemical components were determined. Root glycyrrhizic acid content of plants treated in June increased significantly compared with controls, and the difference was significant. As for plants treated in Jul...