A method for enhancing resistance to necrotrophic and/or hemibiotrophic pathogens by overexpressing glycerol-3-phosphate dehydrogenase using an expression vector in a plant species. For example, the present method can be used to enhance resistance to C. haggansianum by overexpressing glycerol-3-phosphate dehydrogenase in a plant such as Arabidopsis plant, using an expression vector in a plant.