Nematicidal activity of methanolic extracts of Chelidonium majus var. asiaticum against Bursaphelenchus xylophilus.

An ethanol extract of I N. incisum i rhizomes showed LD SB 50 sb values at 0.045 mg ml SP -1 sp against PWN, and falcaridiol, falcarinol, isoimperatorin, and columbianetin were responsible for its nematicidal activity (Liu I et al. i , 2016). The biological activity of I C. majus i var. I asiaticum i on insects and fungi has been reported (Zou I et al. i , 2017; Wei I et al. i , 2020). Kim I et al. i (2011a) and Nguyen I et al. i (2009) reported that extracts of Korean domestic plants and medicinal plant extracts did not show >60% nematicidal activity at 2.5 mg ml SP -1 sp and 4.0 mg ml SP -1 sp concentrations, respectively. Keywords: botanical pesticide; pine wilt disease; pine wood nematode; Pinus EN botanical pesticide pine wilt disease pine wood nematode Pinus 837 840 4 09/30/22 20220701 NES 220701 The pine wood nematode (PWN), I Bursaphelenchus xylophilus i (Steiner & Buhrer), causes pine wilt disease (PWD), which is the most severe disease of pine forests worldwide (Mota & Vieira, 2008). [Extracted from the article]