Nematicidal activity of some essential plant oils from tropical West Africa |
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Authors: | Kodjo Eloh Kafui Kpegba Nicola Sasanelli Honoré Kossi Koumaglo Pierluigi Caboni |
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Institution: | 1. Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy;2. k.eloh@studenti.unica.it;4. Department of Chemistry, University of Lomé, Lomé, Togo;5. Institute for Plant Protection, National Research Council, Via G. Amendola, Bari, Italy |
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Abstract: | AbstractPlant parasitic nematodes are among the most destructive plant pathogens worldwide and their control is very challenging. Plant essential oils (EOs) have showed a great potential in nematode control. In this work, EOs from 10 aromatic plants acclimatized in Togo were assessed in vitro for their nematicidal activity on the root-knot nematode Meloidogyne incognita. EOs were subsequently analyzed by GC-MS and compounds were tested individually on nematodes. The most potent EOs were: Ocimum sanctum L., Cymbopogon schoenanthus (L.) Spreng and Cinnamomum zeylanicum Blume with EC50/72h values of 282?±?53, 288?±?30 and 355?±?126?mg/L, respectively. The EC50/48h values of tested compounds were 81?±?14, 117?±?33, 128?±?42, 141?±?47, 168?±?40, 216?±?86 and 235?±?43?mg/L for cinnamyl acetate, methyl eugenol, cinnamyl alcohol, acetyl eugenol, isoeugenol, eugenol and benzyl benzoate, respectively. Furthermore, we found a synergistic nematicidal activity when we combined phenylpropanoids compounds with carvone. EOs and their constituents described herein merit further studies, especially in pot experiments before serving as nematicides. |
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Keywords: | essential oils nematicidal compounds cinnamon ginger holy basil |
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