The plasma membrane has very important functions, it is composed of a phospholipid bilayer having a non-uniform and fluid structure that controls input and output of nutrients into the cell and is a way of water transport, whose excess or deficiency affects the plant development cycle. Depending on the degree of water stress, it can also affect the plant resistance against the incidence of pathogens that cause great economic losses. Fungi and viruses mostly take advantage o f this deficiency, eliminating the plant defense response producing molecules for this purpose; however, the plants employ proteins produced by resistance genes.