Some of the mental illnesses that can be associated with the existence of synthetic marijuana abuse can include: 1  Bipolar disorder. 2  Schizophrenia. 3  Posttraumatic stress disorder. 4  Attention-deficit/hyperactivity disorder. 5  Anxiety disorders. 6  Depressive disorders. 7  Oppositional defiant disorder. 8  Conduct disorder.
Corn smut, also known as common smut, is a common disease of sweet corn caused by the fungus Ustilago maydis.This disease rarely kills corn plants, but usually causes the production of smaller ears. Corn smut commonly develops on the tassels, ears, leaves, and shoots of corn as a gall.rystal Floyd. Photo by M. Grabowski. Corn smut, also known as common smut, is a common disease of sweet corn caused by the fungus Ustilago maydis. This disease rarely kills corn plants, but usually causes the production of smaller ears.
Ustilago maydis infects two hosts: maize (Zea mays) and teosinte (Zea mexicana). Like other smut diseases, common smut of corn derives its name from the sooty masses of teliospores found on infected host plants (Figure 2). The most obvious symptoms are tumor-like galls that vary in size from less than 1 cm to more than 30 cm (0.4-12 inch) in diameter.