It is an event known today as “the blight.” This caused a variety of pollinators to become extinct and is a harrowing example of how unchecked human development can cause a catastrophe in the natural world. This tree-covered much of the island, but the forest was decimated first by settlers, and then later by an infestation of scale. "13 Different Types of Cedar Trees (All Cedar Tree Varieties)".
Archived from the original on 30 October 2014. Agricultural Research Center - Apopka, University of Florida. "Diseases of Foliage Plants - Revised List 1984". ^ South American Leaf Blight of rubber ( Microcyclus ulei),.^ Erasing the Past: A New Identity for the Damoclean Pathogen Causing South American Leaf Blight of Rubber.EPPO ( European and Mediterranean Plant Protection Organization). "A Review of a Century of Studies on South American Leaf Blight of the Rubber Tree". ^ a b Guyot, Jean Le Guen, Vincent (2018).^ "Alternaria triticina (leaf blight of wheat)".Annals of the Phytopathological Society of Japan (in Japanese). "Role of the rice seedlings and Kouyawarabi ( Onoclea sensibilis L.) infested with Burkholderia plantarii as the source of bacterial seedling blight of rice". " Phenazines as Disinfectants Against Bacterial Leaf Blight of the Rice Plant." Applied Microbiology 14(3):365-367. ^ Oda, M., Sekizawa, Y., and Watanabe, T."Plant Pathology 369 - Southern Corn Leaf Blight Key words: Plant Disease, Bipolaris maydis, Helminthosporium maydis, Cochliobolus heterostrophus,Corn, Sorghum, Teosinte". 5th ed, Burlington, MA: Elsevier Academic Press. When blights have been particularly vast and consequential in their effects, they have become named historical events, such as the 19th Century Potato Blight, also known locally from its primary consequence as the Great famine, the Great Famine of Ireland, and Highland Potato Famine, and the near extinction of the Bermuda cedar during the 1940s and 1950s in the event described as The Blight or The Cedar Blight. For example, Colletotrichum blight is named after the fungus Colletotrichum capsici, and Phytophthora blight is named after the water mold Phytophthora parasitica. However, leaf spots may, in advanced stages, expand to kill entire areas of leaf tissue and thus exhibit blight symptoms.īlights are often named after their causative agent. On leaf tissue, symptoms of blight are the initial appearance of lesions which rapidly engulf surrounding tissue. South American leaf blight, caused by the ascomycete Pseudocercospora ulei, also called Microcyclus ulei, ended the cultivation of the rubber tree ( Hevea brasiliensis) in South America.Bur oak blight, caused by the fungal pathogen Tubakia iowensis.Ascochyta species and Alternaria triticina that causes blight in wheat Early blight of potato and tomato, caused by species of the ubiquitous fungal genus Alternaria.Bacterial seedling blight of rice ( Oryza sativa), caused by pathogen Burkholderia plantarii.Bacterial leaf blight of rice, caused by the bacterium Xanthomonas oryzae (Uyeda & Ishiyama) Dowson.Fire blight of pome fruits, caused by the bacterium Erwinia amylovora (Burrill) Winslow et al., is the most severe disease of pear and also is found in apple and raspberry, among others.Citrus blight, caused by an unknown agent, infects all citrus scions.
Late blight of potato, caused by the water mold Phytophthora infestans (Mont.) de Bary, the disease which led to the Great Irish Famine.Accordingly, many diseases that primarily exhibit this symptom are called blights. Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs.
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