This 10-page paper discusses about plant defense mechanisms. It consists of an abstract, introduction, mechanisms of defense against insects and pathogens, disease resistance genes, biotechnologies, case studies and future research and practical applications. Review of Plant Defense Mechanisms Abstract An imperiled plant is somewhat like a person. It has to depend on the defense mechanisms, both structural and metabolic to prevent harmful effects of the pathogens. It includes preexisting defense structures surface waxes, structure of …showed first 75 words of 2771 total…

…showed last 75 words of 2771 total…the host plant. That is, resistance in plants that evolved with an insect could be susceptible to being overcome by genetic changes in the insect pest. Also, it is clear that gene transfer using rDNA techniques is substantially different from the processes that govern gene transfer in traditional breeding. The extent to which these processes differ will become increasingly clear as we gain a better understanding of the processes governing gene movement, expression and regulation.