INDUCCIÓN DE RESISTENCIA A Fusarium oxysporum Y ESTIMULACIÓN DEL DESARROLLO VEGETAL EN JITOMATE (Solanum lycopersicum) EMPLEANDO Methylobacterium spp

Abstract

The tomato has become one of the most economically important crops worldwide and national. However, the plant health problems it faces, as the incidence of pests and root diseases has led to the excessive use of various synthetic fungicides which is not economically or environmentally viable. It is currently looking for alternatives as the use of growth-promoting bacteria that contribute to the various factors in plant development, production and reducing damage by pathogens. This study evaluated the tomato crop at laboratory and greenhouse using the bacterium Methylobacterium sp., as a factor to induce the development of the crop plant and the effect of resistance to Fusarium oxysporum. In the treatments used the bacteria was placed in direct contact with the seeds and then sprayed tomato plants. The experiments were performed in two stages: seed germination and root length in vitro and in seedling and second, plants development was evaluated with parameters such as height, leaf number, amplitude, and dry weight production at greenhouse. Just as the use of Plants inoculated with Fusarium oxysporum to were used to assess the biocontrol degree. The treatments in parameters evaluated for plant development and degree of illness indicated that significant differences exist between plants positively treated with Methylobacterium sp. and the control group. Further experiments were conducted to evaluate the expression of genes related to the induction of resistance in plants inoculated with Methylobacterium spp. In the latter case, the expression of these genes was not differential between the different treatments.