Du shushan¹; Zhang Haiming¹; Bai Chunqi ²; Wang Chengfang ¹; Liu Qizhi ²; Liu Zhilong ²; Wang Yongyan ¹; Deng Zhiwei ³

1. Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China

2. China Agr Univ, Dept Entomol, Beijing 100094, Peoples R China

3. Beijing Normal Univ, Analyt & Testing Ctr, Beijing 100875, Peoples R China

Abstract: A screening of several Chinese medicinal herbs for nematicidal properties showed that Arisaema erubescens (Wall.) Schott tubers possessed significant nematicidal activity against the root-knot nematode (Meloidogyne incognita). From the ethanol extract, two nematicidal flavone-C-glycosides were isolated by bioassay-guided fractionation. The compounds were identified as schaftoside and isoschaftoside on the basis of their phytochemical and spectral data. Schaftoside and isoschaftoside possessed strong nematicidal activity against M. incognita (LC₅₀ = 114.66 mu g/mL and 323.09 mu g/mL, respectively) while the crude extract of A. erubescens exhibited nematicidal activity against the root-knot nematode with a LC₅₀ value of 258.11 mu g/mL.

Keywords: nematicidal activity; Arisaema erubescens; Meloidogyne incognita; schaftoside; isoschaftoside