Pest Management Science (2011) 67, 341-351

Nikoletta G. Ntalli, Federico Ferrari, Ioannis Giannakou and Urania Menkissoglu-Spiroudi (2011)
Synergistic and antagonistic interactions of terpenes against Meloidogyne incognita and the nematicidal activity of essential oils from seven plants indigenous to Greece
Pest Management Science 67 (3), 341-351
Abstract: BACKGROUND: Biorational means for phytonematode control were studied within the context of an increasingly ecofriendly pest management global approach. The nematicidal activity and the chemical composition of essential oils (EOs) isolated from seven plants grown in Greece and ten selected compounds extracted from them against second-stage juveniles (J2) of Meloidogyne incognita (Kof. and White) Chitwood were evaluated using juvenile paralysis experiments. Additionally, synergistic and antagonistic interactions between nematicidal terpenes were studied using an effect addition model, with the comparison made at one concentration level.
RESULTS: The 96 h EC₅₀ values of Foeniculum vulgare Mill., Pimpinella anisum L., Eucalyptus meliodora A Cunn ex Schauer and Pistacia terebinthus L. were 231, 269, 807 and 1116 µg mL⁻¹, respectively, in an immersion bioassay. Benzaldehyde (9 µg mL⁻¹) was the most toxic compound, followed by gamma-eudesmol (50 µg mL⁻¹) and estragole (180 µg mL⁻¹), based on 96 h EC₅₀ values. The most potent terpene pairs between which synergistic actions were found, in decreasing order, were: trans-anethole/geraniol, trans-anethole/eugenol, carvacrol/eugenol and geraniol/carvacrol.
CONCLUSION: This is the first report on the activity of F. vulgare, P. anisum, E. meliodora and P. terebinthus, and additionally on synergistic/antagonistic nematicidal terpene interactions, against M. incognita, providing alternative methods for nematode control.
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Link to article at publishers website
Database assignments for author(s): Nikoletta G. Ntalli, Urania Menkissoglu-Spiroudi

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Meloidogyne incognita		Greece