Identification of autotoxic compounds in fibrous roots of Rehmannia (Rehmannia glutinosa Libosch.).

ABSTRACT: Rehmannia is a medicinal plant in China. Autotoxicity has been reported to be one of the major problems hindering the consecutive monoculture of Rehmannia. However, potential autotoxins produced by the fibrous roots are less known. In this study, the autotoxicity of these fibrous roots was investigated. Four groups of autotoxic compounds from the aqueous extracts of the fibrous roots were isolated and characterized. The ethyl acetate extracts of these water-soluble compounds were further analyzed and separated into five fractions. Among them, the most autotoxic fraction (Fr 3) was subjected to GC/MS analysis, resulting in 32 identified compounds. Based on literature, nine compounds were selected for testing their autotoxic effects on radicle growth. Seven out of the nine compounds were phe

SUBMITTER: Li ZF 

PROVIDER: S-EPMC3250401 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature