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:
Marie-Anne Libert
She was one of the first to identify the organism responsible for the "late blight" disease of the potato, which she named "Botrytis vastatrix" Lib. and of which she gave a detailed description in a report written in August 1845. The German mycologist Anton de Bary built on this discovery, among other work, when he showed in 1876 that the oomycete, "Phytophthora infestans" as he renamed it, was the cause of late blight, and not the consequence as was still believed at the time.