Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 531551
Title Volatile organic molecules from Fusarium oxysporum strain 21 with nematicidal activity against Meloidogyne incognita
Author(s) Terra, Willian César; Campos, Vicente Paulo; Martins, Samuel Julio; Costa, Lilian Simara Abreu S.; Silva, Júlio Carlos Pereira da; Barros, Aline Ferreira; Lopez, Liliana Estupiñan; Santos, Thaisa Conrado Nunes; Smant, Geert; Oliveira, Denilson Ferreira
Source Crop Protection 106 (2018). - ISSN 0261-2194 - p. 125 - 131.
DOI http://dx.doi.org/10.1016/j.cropro.2017.12.022
Department(s) Laboratory of Nematology
EPS
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Bioprospecting - Fusarium oxysporum - Plant-parasitic nematodes - Volatiles
Abstract Volatile organic compounds (VOCs) produced by microorganisms are potential alternatives for the development of new nematicides. In a previous study, we identified VOCs produced by Fusarium oxysporum strain 21 (F.o–21). In this study, we tested the eight most abundant VOCs produced by F.o-21 against Meloidogyne incognita. Compounds 2-methylbutyl acetate (1), 3-methylbutyl acetate (2), ethyl acetate (7), and 2-methylpropyl acetate (8) led to in vitro mortality of 100%, 91%, 100%, and 82%, respectively, in second-stage juveniles (J2) of M. incognita at a concentration of 500 μg/mL. The lethal concentration (LC50) for compounds 1, 2, 7, and 8 in M. incognita J2, was 236, 198, 213, and 218 μg/mL, respectively. Under the same conditions, the commercial nematicide called carbofuran (2,3-dihydro-2,2-dimethyl-1-benzofuran-7-yl N-methyl carbamate) showed an LC50 of 191 μg/mL. Eggs exposed to compounds 2 and 7, for 72 h showed up to a 90% reduction in hatching, and the compounds 1, 2, 7, and 8 reduced M. incognita infectivity by 52%, 52%, 36% and 41%, respectively. When the compounds were applied in tomato seedlings infested by M. incognita, compound 1 reduced the number of galls per root gram by 22% when compared to the negative control (without the application of nematicide). The compound 2-methylbutyl acetate (1) showed potential to be used in the field after improvements in the application technology.
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