Microscopical Study of Internal Symptoms of Bean Yellow Mosaic Virus in Infected Faba Bean Plants

Amorphous granular inclusion bodies were detected in the epidermal cells of infected faba bean plants with BYMV. Electron microscopic examination of thin sections of infected faba bean leaves showed pinwheels , lamellae , crystals and different components in the cytoplasm of infected cells , as well as satellite bodies in the nucleoli .
Also , electron microscopic studies reveald the degradation of some plastids , hypertrophied and malformated mitochondria, and membranous protrusions in the internal membrane of the infected cells .