Nematicidal Activity of Plant Essential Oils against Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae)

The nematicidal activity and poisoning symptoms of 88 plant essential oils against Bursaphelenchus xylophilus were examined by an immersion bioassay. Results were compared with those of three trunk-injection nematicides: fenitrithion, levamisol hydrochloride, and morantel tartrate. As judged by 24 h...

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Bibliographic Details
Published in:Journal of Asia-Pacific entomology 2006-06, Vol.9 (2), p.173-178
Main Authors: Kong, Jung-Ok, Lee, Sang-Myung, Moon, Yil-Seong, Lee, Sang-Gil, Ahn, Young-Joon
Format: Article
Language:English
Subjects:
ACEITES ESENCIALES
Aphelenchoididae
botanical nematicide
BURSAPHELENCHUS XYLOPHILUS
essential oil
ESSENTIAL OILS
Eugenia
HUILE ESSENTIELLE
Nematoda
Origanum
pine wilt disease
pine wood nematode
Thymus
trunk-injection nematicide
Xylophilus
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Summary:The nematicidal activity and poisoning symptoms of 88 plant essential oils against Bursaphelenchus xylophilus were examined by an immersion bioassay. Results were compared with those of three trunk-injection nematicides: fenitrithion, levamisol hydrochloride, and morantel tartrate. As judged by 24 h LC 50 values, cinnamon bark oil (0.12 mg/ml) was the most effective nematicide, followed by coriander herb oil (0.14 mg/ml). Potent nematicidal activity was also observed with lemongrass, oregano, thyme red, and clove bud oils (LC 50, 0.57-0.88 mg/ml). Fenitrothion was ineffective (LC 50, > 10 mg/ml). In typical poisoning symptoms in B. xylophilus, these essential oils exerted rapid nematicidal action and the nematodes killed usually showed an extended shape, whereas levamisole hydrochloride and morantel tartrate usually exhibited semicircular and coiling shapes, respectively. The essential oils described merit further study as botanical nematicides for the control of pine wilt disease caused by B. xylophilus.
ISSN:1226-8615
1876-7990
DOI:10.1016/S1226-8615(08)60289-7