1980 年 44 巻 4 号 p. 903-906
Guided by the bioassay with Bursaphelenchus lignicolus described in the preceding paper, two nematicidal substances were isolated from roots of Cirsium japonicum and identified with tridec-l-ene-3, 5, 7, 9, 11-pentayne and 9, 10-epoxy-heptadec-l6-ene-4, 6-diyn-8-ol. These two compounds completely inhibited propagation of the nematode at a dose of 16μg and 250μg, respectively. 1-Phenylhepta-1, 3, 5-triyne and 2-phenyl-5-(1'-propynyl)-thiophene (from Coreopsis lanceolata) and cis-dehydromatricaria ester (from Solidago altissima) also inhibited the propagation at a dose of 110μg.
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