Abstract

A lot of agricultural crops are being endangered by a wide variety of biotic stresses reduced about 42% of the world’s total agricultural crop is destroyed yearly by diseases and pests. Crop losses due to diseases manifest in form of reduced yield, poor quality produce, and reduced post-harvest storage. Previous investigation has brought to the attention the continuous capacity of disease causing agents to revert to new strains and pathotypes, some that break resistant varieties or are less sensitive to chemical control products. Currently, farmers are advised to combine several plant disease management practices, a strategy known as integrated plant disease management. Such strategies include cultural methods, chemical methods as well as biological as well as use of genetically resistant varieties. The manipulation, genetic modification and multiplication of living organisms through novel technologies, such as genetic engineering and tissue culture resulting in the production of better-quality or new organisms and finally products that can be used as a variety of ways. The present chapter portrayed recent developments in the application of molecular techniques and biotechnology to manage plant diseases and conceivable for enhanced plant disease management.