CONICET | Buscador de Institutos y Recursos Humanos

Nacobbus aberrans is a plant parasitic nematode that causes significant economic losses in the American Continent and isconsidered a quarantine pest in many countries. Some arbuscular mycorrhizal fungi have shown the ability to reduce thepopulation of this pathogen; however, most studies do not consider other relevant aspects that have to do with the crop orthe fungus. The purpose of this work was to select an isolated mycorrhizal fungus based on a comprehensive analysis ofthe Nematode?Plant?Mycorrhizal Fungus system. The test was conducted on Solanum lycopersicum L. grown in pots. Theevaluated isolates were Funneliformis mosseae, Rhizoglomus intraradices A2, and Rhizoglomus intraradices B1. All theisolates reduced the nematode population significantly; however, differences in the content of photosynthetic pigments,soluble proteins, and osmoregulatory metabolites were identified. All of these impacted on the photosynthetic rates of thedifferent treatments. There were also differences in the growth of the fungi within the roots, and in the viability of the fungalstructures. The comprehensive analysis of the plant?nematode?fungus group allows us to conclude that the isolate with thegreatest capacity to compensate for the negative effect of parasitism, and with the greatest possibility of lasting as a biocontrolagent is Funneliformis mosseae.