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Título: | Synergism of citral from Cymbopogon citratus essential oil and undecan-2-one against Meloidogyne incognita |
Palavras-chave: | Natural nematicide Root-knot nematodes Synergistic effect Óleos essenciais Nematicida natural Nematoide das galhas Efeito sinérgico |
Data do documento: | Mai-2020 |
Editor: | Brill |
Citação: | BARROS, A. F. et al. Synergism of citral from Cymbopogon citratus essential oil and undecan-2-one against Meloidogyne incognita. Nematology, [S.I.], May 2020. DOI: https://doi.org/10.1163/15685411-bja10014. |
Resumo: | The nematicidal activity of the essential oil of Cymbopogon citratus and its main components were studied. During in vitro assays with Meloidogyne incognita second-stage juveniles (J2), the oil showed an LC50 of 166 μg ml−1. In vivo assays that exposed J2 to the LC50 oil concentration significantly reduced galls and eggs on tomato roots. According to gas chromatography-mass spectrometry analyses, the main components of the essential oil were geranial (42.7%) and neral (33.0%). The combination of these two isomers, known as citral, had an enhanced nematicidal activity at low concentrations as shown by in vitro tests through a synergistic interaction with undecan-2-one. In assays with tomato plants inoculated with M. incognita J2, the combination of citral (600 μg ml−1) and undecan-2-one (300 μg ml−1) showed a high reduction in the number of galls (63.4%) and eggs (56.3%) in relation to Tween 80® control. The citral/undecan-2-one combination showed a synergistic nematicidal activity against M. incognita during in vitro and in vivo assays. |
URI: | https://doi.org/10.1163/15685411-bja10014 http://repositorio.ufla.br/jspui/handle/1/43365 |
Aparece nas coleções: | DFP - Artigos publicados em periódicos |
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