Blight

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Specific symptom affecting plants in response to infection by a pathogenic organism

title: "Blight" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["mycology", "plant-pathogens-and-diseases"] description: "Specific symptom affecting plants in response to infection by a pathogenic organism" topic_path: "general/mycology" source: "https://en.wikipedia.org/wiki/Blight" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Specific symptom affecting plants in response to infection by a pathogenic organism ::

Blight is a specific symptom affecting plants in response to infection by a pathogenic organism.

Description

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:

On leaf tissue, symptoms of blight are the initial appearance of lesions which rapidly engulf surrounding tissue. However, leaf spots may, in advanced stages, expand to kill entire areas of leaf tissue and thus exhibit blight symptoms.

Blights are often named after their causative agent. For example, Colletotrichum blight is named after the fungus Colletotrichum capsici, and Phytophthora blight is named after the water mold Phytophthora parasitica.

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.

Gallery

File:Chestnut blight.jpg|Chestnut blight File:Brown Felt Blight.jpg|Brown felt blight File:Late blight on potato leaf 2.jpg|Potato late blight File:Fire blight appletree fruit closeup.JPG|Fire blight appletree fruit File:Three dead Bermuda cedars (Juniperus bermudiana) at Prospect Camp, Bermuda in 2019.jpg|Three dead Bermuda cedars in 2019

References

References

  1. Agrios, George N. 2005. ''Plant Pathology''. 5th ed, Burlington, MA: Elsevier Academic Press.
  2. "Plant Pathology 369 - Southern Corn Leaf Blight Key words: Plant Disease, Bipolaris maydis, Helminthosporium maydis, Cochliobolus heterostrophus, Corn, Sorghum, Teosinte".
  3. Oda, M., Sekizawa, Y., and Watanabe, T. 1966. "[[Phenazine]]s as Disinfectants Against Bacterial Leaf Blight of the Rice Plant." ''Applied Microbiology'' 14(3):365-367.
  4. (2002). "Role of the rice seedlings [''Oryza sativa''] and Kouyawarabi (''Onoclea sensibilis L.'') infested with ''Burkholderia plantarii'' as the source of bacterial seedling blight of rice". Annals of the Phytopathological Society of Japan.
  5. "Ascochyta Leaf Blight of Turf".
  6. (27 September 2018). "Alternaria triticina (leaf blight of wheat)".
  7. (2018). "A Review of a Century of Studies on South American Leaf Blight of the Rubber Tree". [[American Phytopathological Society]].
  8. (2002-04-09). "''Pseudocercospora ulei'' (MICCUL){{bracket". EPPO ([[European and Mediterranean Plant Protection Organization]]).
  9. [https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0104750#pone-0104750-g006 Erasing the Past: A New Identity for the Damoclean Pathogen Causing South American Leaf Blight of Rubber]
  10. [http://www.plantwise.org/knowledgebank/datasheet.aspx?dsid=33893 South American Leaf Blight of rubber (''Microcyclus ulei'')], plantwise.org
  11. Chase, A. R.. (1984). "Diseases of Foliage Plants - Revised List 1984". Agricultural Research Center - Apopka, University of Florida.
  12. Undlin, Siri. (2020-12-23). "13 Different Types of Cedar Trees (All Cedar Tree Varieties)". PlantSnap Inc..
  13. . (). ["Speciation at Spittal Pond"](https://evolvingshores.weebly.com/speciation-at-spittal-pond.html). *Explorations in Biology, Bermuda College*.
  14. Mastny, Lisa. "Bermuda".
  15. . (). ["Bermuda: The Best Places to Get Away from It All in Bermuda"](https://www.frommers.com/destinations/bermuda/introduction/the-best-places-to-get-away-from-it-all). *FrommerMedia LLC*.
  16. . (2011-02-10). ["Leader of fight against tree blight dies"](https://www.royalgazette.com/international-business/article/20110210/leader-of-fight-against-tree-blight-dies). *The Royal Gazette*.
  17. Calnan, Patricia. (2011-02-10). "Learning about the cedar tree". The Royal Gazette.
  18. Hardy, Jessie Moniz. (2020-10-14). "Dark Bottom, a 1950s haven and horror". The Royal Gazette.

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mycologyplant-pathogens-and-diseases