The present investigation tarts on the study of Bacillus subtilis as a plant growth promoter bacteria in horticultural crops in Los Ríos. Among the growth-promoting bacteria is Bacillus, which is a genus used to control phytopathogens, and even pests, from which different commercial products have been formulated based on these bacteria. Due to the conclusions raised, it is determined that Bacteria promote plant growth through different direct and indirect mechanisms that induce systemic resistance of plants, both to biotic stress (attack by pathogens) or to abiotic stress (periods of drought, temperature, contaminants); Bacillus subtilis is a bacterium considered as an ecological alternative to improve fruit growth and increase the yield of horticultural crops, especially in the province of Los Ríos, since it produces natural antibiotics that weaken the cell wall and inhibit the growth of pathogens through production of substances such as Bacilomycin, Fengimycin and Micoceryn, which are considered antibiotics against fungi and genetic engineering is the science that allows obtaining genetically modified microorganisms that allows expanding capacities of growth-promoting bacteriaThe present investigation tarts on the study of Bacillus subtilis as a plant growth promoter bacteria in horticultural crops in Los Ríos. Among the growth-promoting bacteria is Bacillus, which is a genus used to control phytopathogens, and even pests, from which different commercial products have been formulated based on these bacteria. Due to the conclusions raised, it is determined that Bacteria promote plant growth through different direct and indirect mechanisms that induce systemic resistance of plants, both to biotic stress (attack by pathogens) or to abiotic stress (periods of drought, temperature, contaminants); Bacillus subtilis is a bacterium considered as an ecological alternative to improve fruit growth and increase the yield of horticultural crops, especially in the province of Los Ríos, since it produces natural antibiotics that weaken the cell wall and inhibit the growth of pathogens through production of substances such as Bacilomycin, Fengimycin and Micoceryn, which are considered antibiotics against fungi and genetic engineering is the science that allows obtaining genetically modified microorganisms that allows expanding capacities of growth-promoting bacteriaLa presente investigación trata sobre el estudio de Bacillus subtilis como bacteria promotora de crecimiento vegetal en cultivos hortícolas en Los Ríos. Esta bacteria ha sido descubierta dentro del grupo de antagónicos de otros patógenos y sirve para controlar fitopatógenos, e incluso plagas, del cual se han formulado diferentes productos comerciales a base de estas bacterias. Por las conclusiones planteadas, se determina que Las bacterias promueven el crecimiento de los vegetales mediante diferentes mecanismos directos e indirectos que inducen a la resistencia sistémica de las plantas, tanto al estrés biótico (ataque de patógenos) o al estrés abiótico (periodos de sequía, temperatura, contaminantes); Bacillus subtilis es una bacteria considerada como alternativa ecológica para mejorar el crecimiento del fruto y aumento del rendimiento de los cultivos hortícolas, especialmente en la provincia de Los Ríos, ya que produce antibióticos naturales que debilitan la pared celular e inhiben el crecimiento de patógenos mediante la producción de sustancias como Bacilomycin, Fengimycin y Micoceryn, las cuales son consideradas antibióticos contra hongos y la ingeniería genética es la ciencia que permite obtener microorganismos modificados genéticamente que permite ampliar capacidades de las bacterias promotoras de crecimiento.