Resumen

CAMBERO AYON, Carlos Bryan et al. In vitro suppression of fungal root pathogens in Annona muricata L. by Trichoderma strains and conventional fungicides. Revista bio ciencias [online]. 2023, vol.10, e1497.  Epub 23-Feb-2024. ISSN 2007-3380.  https://doi.org/10.15741/revbio.10.e1497.

Fusarium falciforme and Lasiodiplodia theobromae are the main root and stem fungal pathogens in soursop trees (Annona muricata L.) in Nayarit, Mexico. Regional fruit producers do not have effective strategies to control this pathology. Therefore, the main objective of the research was to evaluate the in vitro biocontrol potential of strains of Trichoderma antagonists and the efficacy of conventional fungicides. Twelve Trichoderma strains were evaluated in vitro against F. falciforme and L. theobromae. Also, the in vitro sensitivity of both fungal pathogens to eight commercial fungicides was evaluated. The strains of T. hamatum and T. asperellum inhibited the in vitro mycelial growth of F. falciforme up to 75.31%. On the other hand, Mancozeb was the only fungicide that completely inhibited the in vitro mycelial growth of both phytopathogens. Obtained data suggest the potential use of both control strategies for the suppression of root and stem diseases in soursop. It is recommended to conduct additional studies on the possible synergistic effects of the combination of both strategies in preventing and controlling this fungal disease in A. muricata.

Palabras llave : Antagonism; inhibition; molecules; soursop; Trichoderma.