<i>In vitro</i> Antibacterial Activity of <i>Moringa oleifera</i> Ethanolic Extract against Tomato Phytopathogenic Bacteria |
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Authors: | Roberto Arredondo-Valdés Francisco D Hernández-Castillo Mario Rocandio-Rodríguez Julia C Anguiano-Cabello Madai Rosas-Mejía Venancio Vanoye-Eligio Salvador Ordaz-Silva Imelda V López-Sánchez Laura D Carrazco-Peña Julio C Chacón-Hernández |
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Institution: | 1 Institute of Applied Ecology, Universidad Autónoma de Tamaulipas, Ciudad Victoria, Tamaulipas, 87019, México2 Parasitology Department, Universidad Autónoma Agraria Antonio Narro, Saltillo, 25315, México3 Health Area, Universidad La Salle Saltillo, Saltillo, 25298, México4 Faculty of Engineering and Business San Quintin, Universidad Autónoma de Baja California, San Quintín, 22930, México |
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Abstract: | The tomato (Solanum lycopersicum L.) is one of the world’s most important vegetable crops. Still, phytopathogenic bacteria affect the yield and quality of tomato cultivation, like Agrobacterium tumefeciens (At), Clavibacter
michiganensis subsp. michiganensis (Cmm), Pseudomonas syringae pv. tomato (Pst), Ralstonia solanacearum (Rs),
and Xanthomonas axonopodis (Xa). Synthetic chemical products are used mostly on disease plant control, but
overuse generates resistance to bacterial control. This study aimed to evaluate the in vitro antibacterial activity
of the ethanolic extract of Moringa oleifera Lam. leaves against At, Cmm, Pst, Rs, and Xa, as well as information
about this plant species’ chemical composition. Antibacterial activity against pathogens observed by microplate
technique, phytochemical screening, and FTIR analysis revealed different bio-active compounds on ethanolic
extracts with antibacterial activity. The growth inhibition rate ranged between 0.08% and 99.94%. The inhibitory
concentration, IC50, required to inhibit 50% of At, Cmm, Pst, Rs, and Xa bacterial growth, was 276.67, 350.48,
277.85, 351.49, and 283.22 mg/L, respectively. Inhibition of phytopathogen bacteria’s growth increased as the concentrations of the extract also increased. Moringa oleifera extract can be recommended as a potent bio-bactericide. |
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Keywords: | Biological control secondary metabolites tomato crop inhibitory concentration botanical extract |
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