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  • Open Access


    In vitro Antibacterial Activity of Moringa oleifera Ethanolic Extract against Tomato Phytopathogenic Bacteria

    Roberto Arredondo-Valdés1, Francisco D. Hernández-Castillo2, Mario Rocandio-Rodríguez1, Julia C. Anguiano-Cabello3, Madai Rosas-Mejía1, Venancio Vanoye-Eligio1, Salvador Ordaz-Silva4, Imelda V. López-Sánchez4, Laura D. Carrazco-Peña4, Julio C. Chacón-Hernández1,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 895-906, 2021, DOI:10.32604/phyton.2021.014301

    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… More >

  • Open Access


    Spatial Distribution of Nymphs Populations Bactericera cockerelli Sulc in Tomato Crops (Physalis ixocarpa Brot)

    Roberto Rivera-Martínez1, Agustín David Acosta-Guadarrama1, José Francisco Ramírez-Dávila2,*, Fidel Lara Vazquez1, Dulce Karen Figueroa Figueroa1

    Phyton-International Journal of Experimental Botany, Vol.88, No.4, pp. 449-458, 2019, DOI:10.32604/phyton.2019.06350

    Abstract Tomato crops (Physalis ixocarpa Brot.) are produced in almost all Mexico, part of the United States and Central America. Recently the tomato production has suffered economic losses of 70% to 80% due the presence of yellowing and floral abortion, whose causal agent has been attributed to the presence of phytoplasma; an insect vector of these phytoplasma is Bactericera cockerrelli Sulc. Alternative control of this psyllid has lacked effectiveness because their spatial distribution is unknown within tomato plots. This study aimed to determine the spatial distribution of populations of nymphs of B. cockerelli in four tomato plots, the determination of the… More >

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