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Nematicidal effect of volatile organic compounds (VOCs) on the plant-parasitic nematode Meloidogyne javanica

Authors :
Fialho, Mauricio Batista
Bessi, Rosana
Inomoto, Mário Massayuki
Pascholati, Sérgio Florentino
Source :
Summa Phytopathologica, Volume: 38, Issue: 2, Pages: 152-154, Published: JUN 2012
Publication Year :
2012
Publisher :
Grupo Paulista de Fitopatologia, 2012.

Abstract

Previous studies have demonstrated that volatile organic compounds (VOCs), produced by the yeast Saccharomyces cerevisiae, were able to inhibit the development of phytopathogenic fungi. In this context, the nematicidal potential of the synthetic mixture of VOCs, constituted of alcohols and esters, was evaluated for the control of the root-knot nematode Meloidogyne javanica, which causes losses to crops of high economic value. The fumigation of substrate containing second-stage juveniles with VOCs exhibited nematicidal effect higher than 30% for the lowest concentration tested (33.3 µL g-1 substrate), whereas at 66.6 and 133.3 µL g-1 substrate, the nematode mortality was 100%. The present results stimulate other studies on VOCs for nematode management. Estudos anteriores demonstraram que compostos orgânicos voláteis (COVs), produzidos pela levedura Saccharomyces cerevisiae, são capazes de inibir o desenvolvimento de fungos fitopatogênicos. Neste contexto, foi avaliado o potencial nematicida da mistura sintética de COVs, constituída por alcoóis e ésteres, para o controle do nematóide das galhas Meloidogyne javanica, que causa perdas em culturas de alto valor econômico. A fumigação do substrato, contendo juvenis de segundo estádio, com COVs apresentou efeito nematicida superior a 30% na menor dosagem testada (33,3 µL g-1 de substrato), enquanto que nas dosagens de 66,6 e 133,3 µL g-1, a mortalidade atingiu 100%. Os resultados encorajam maiores estudos envolvendo COVs no manejo de nematóides.

Details

Language :
English
Database :
OpenAIRE
Journal :
Summa Phytopathologica, Volume: 38, Issue: 2, Pages: 152-154, Published: JUN 2012
Accession number :
edsair.od.......608..1866a82aa0be156de9bc0674e1455c8a