Abstract

CORREA-PACHECO, Zormy Nacary; BAUTISTA-BANOS, Silvia; HERNANDEZ-LOPEZ, Mónica  and  MARQUINA-VALLE, Miguel Ángel. Evaluation of nanoformulations on in vitro development of fungal phytopathogens. Rev. mex. fitopatol [online]. 2018, vol.36, n.3, pp.457-467. ISSN 2007-8080.  https://doi.org/10.18781/r.mex.fit.1803-2.

For controlling phytopathogenic microorganisms, there exist new proposals of nanomaterials including those from chitosan and essential oils, which may be applied alone or in coating nanoformulations. Six fungal isolates were subjected to different nanoparticles treatments in order to evaluate their effect on mycelial growth and spore germination. It was observed a total growth inhibition (100%) in most fungi when they were incubated on nutrient media amended with nanoparticles of chitosan loaded with thyme essential oil at 5%, applied either alone or in nanostructured coatings. As for the spore germination tests, a notable inhibition (50 % and 100%) was observed at 1% concentration of thyme essential oil depending on the isolate. When fungi were grown on individually treatments, germination was delayed by 6 h but completely stopped when incubated on coated nanoformulations. Compared to the lime essential oil, it was the thyme essential oil which provided a remarkable control of the tested fungi.

Keywords : nanomaterials; chitosan; essential oils.