Phytopathogenic viruses

Abstract

Plant viruses are small sized plant pathogens. They are obligate parasites and among the major limiting factors to modern agriculture. The incidence of plant viruses has been shown in woody and herbaceous plants, soil and surface waters. Many of them have a wide host range and are characterized by efficient virus transmission. Since curative plant protection measures are lacking, it is important to focus on preventive measures according to phytosanitary practices, interruption of transmission pathways and vector control to combat plant viruses in practical crop production. Viral diseases require a constant vigil. The suitability and efficacy of different measures depend on the specific characteristics of the virus and the biology of the plants, potential vectors, and the environment.