Blight
Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs. Accordingly, many diseases that primarily exhibit this symptom are called blights. Several notable examples are:
Blight
Blights are often named after their causative agent, for example "Colletotrichum" blight is named after the fungi "Colletotrichum capsici", and "Phytophthora" blight is named after the water mold "Phytophthora parasitica".