RESUMEN
This study explored the use of silver nanoparticle as a bactericidal against the propagation of Clavibacter michiganensis onto tomatoes (Lycopersicon esculentum Mill). In Mexico, tomato production covers about 73% of the total vegetable production but it is affected by outbreak of bacteria canker caused by Clavibacter michiganensis subspecies michiganensis (Cmm). Silver ions possess inhibitor properties, bactericides and high specter antimicrobials. In this study, 6 groups of culture were prepared using 6 different petri dishes where silver nanoparticles of varying concentrations (120, 84, 48, 24, 12 and 0⯵g) were added. Furthermore, each group was observed for 20â¯min, 1, 2, 12 and 24â¯h. The optimum concentration is 84⯵g, which shows an average of 2 Cmm colonies after 20â¯min. Further increase to 120⯵g shows no significant change. However, the average colonies was observed for 48⯵g after 1, 2, 12, and 24â¯h. The obtained results indicate that silver nanoparticles are a promising inhibitor, bactericide and high a specter antimicrobial for treatment or prevention of Cmm.