IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
FUNGICIDE EFFECT OF VOLATILE ORGANIC COMPOUNDS ON IN VITRO FUSARIUM VERTICILLIOIDES GROWTH
Autor/es:
PIZZOLITTO R.P.; ZYGADLO, J.A.; JACQUAT A.G.; BRITO V.D.; ACHIMÓN, F.
Lugar:
La Falda, Córdoba
Reunión:
Jornada; XXI Jornadas Científicas de la Sociedad Biológica de Córdoba; 2017
Resumen:
While new technologies have led to a significant increase in grain production, pests attack reduces the production, leading to food and economic losses. Nowadays, the emphasis is on studying alternatives to grain conservation, such as the use of biopesticides, organic compounds derived from natural sources, considered as a green technology of minimum risk. The aim of this study was toevaluate the antifungal capacity of volatile organic compounds (VOCs) against a corn grain pest fungus: Fusarium verticillioides.For this purpose, fumigant toxicity tests were carried out in vitro employing: isovaleraldehyde, isobutyraldehyde, cis-2-hexenol, cis-3-hexenol and nerol. Eight concentrations were tested between 4.24 and 0.033 μM. Although, all the compounds used showed an effect on F. verticillioides growth, at the tested doses the nerol and isovaleraldehyde were the most active compounds, resulting in a total inhibition of mycelial growth at a minimum concentration of 0.27 μM and 0.31 μM, respectively. The minimum inhibitory concentration for the other compounds was found to be higher than for nerol and isovaleraldehyde, thus, 1.42 μM for cis-2- hexenol, 4.66 μM for isobutyraldehyde and 16.27 μM for cis-3-hexenol. The use of biocompounds has advantages over other pesticides, because they present a reduced toxicity in mammals and restricted persistence in the environment. Thus, nerol and isovaleraldehyde could constitute an alternative tool for the protection of the stored corn kernels.