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  • Journal Of Nematology

 

Research Article

Nematotoxic coumarins from Angelica pubescens Maxim. f. biserrata Shan et Yuan roots and their physiological effects on Bursaphelenchus xylophilus

The ethanol extracts from the roots of Angelica pubescens Maxim. f. biserrata Shan et Yuan was toxic against the pine wood nematode Bursaphelenchus xylophilus. The ethyl acetate-soluble fraction derived from this extract increased its potency with a mortality of 95.25% in 72 hr at 1.0 mg/mL. Four nematotoxic coumarins were obtained from the ethyl acetate extract by bioassay-guided isolation. These were identified as osthole 1, columbianadin 2, bergapten 3 and xanthotoxin 4 by mass and nuclear

Qun-Qun Guo, Gui-Cai Du, Yong-Xing Li, Chen-Yan Liang, Chao Wang, Ya-Nan Zhang, Rong-Gui Li

Journal of Nematology , ISSUE 4, 559–568

research-article

Transcriptomic analysis of Bursaphelenchus xylophilus treated by a potential phytonematicide, punicalagin

(Wang et al., 2012; Guo et al., 2016, 2017, 2018). Consequently, we identified punicalagin from pomegranate (Punica granatum L.) rind extract as an active compound against B. xylophilus. This compound inhibited the activities of acetylcholinesterase, amylase and cellulase in B. xylophilus and caused morphological alterations in the nematodes (Guo et al., 2017). Because punicalagin has the potential to be a low-cost, water-soluble natural nematicide against B. xylophilus, its nematotoxic mechanism

Qun-Qun Guo, Gui-Cai Du, Ting-Ting Zhang, Mei-Juan Wang, Chao Wang, Hong-Tao Qi, Rong-Gui Li

Journal of Nematology , 1–14

Research Article

Activity of Vetiver Extracts and Essential Oil against Meloidogyne incognita

Vetiver, a nonhost grass for certain nematodes, was studied for the production of compounds active against the southern root-knot nematode, Meloidogyne incognita. In laboratory assays studying the effects on second-stage juvenile (J2) activity and viability, crude vetiver root and shoot extracts were nematotoxic, resulting in 40% to 70% J2 mortality, and were also repellent to J2. Vetiver oil did not exhibit activity against J2 in these assays. Gas chromatography-mass spectrometry analyses of

Kansiree Jindapunnapat, Nathan D. Reetz, Margaret H. MacDonald, Ganga Bhagavathy, Buncha Chinnasri, Noppamas Soonthornchareonnon, Anongnuch Sasnarukkit, Kamlesh R. Chauhan, David J. Chitwood, Susan L.F. Meyer

Journal of Nematology , ISSUE 2, 147–162

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