In vitro evaluation of the efficacy of 8-hydroxyquinoline derivatives for the control of Phaeomoniella chlamydospora, the causative agent of Petri disease in grapevines.

Aim: This study evaluates the in vitro efficacy of 8-hydroxyquinoline (8HQ) derivatives in controlling the phytopathogenic fungus Phaeomoniella chlamydospora.

Methods And Results: The in vitro tests assessed the susceptibility to the minimum inhibitory concentration (MIC), checkerboard assay, mycelial growth (MG) inhibition, and EC50 determination. Among the seven agricultural fungicides tested, tebuconazole (TEB) displayed the lowest MIC, 1.

Bacillus subtilis strain F62 against Fusarium oxysporum and promoting plant growth in the grapevine rootstock SO4.

Fusarium wilt is a fungal disease that causes economic losses to viticulture, whose causal agent Fusarium sp. has been associated with the decline and death of young vines. This work had the objective of evaluating the antagonistic potential of Bacillus subtilis F62 against F.