blight
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(blīt) 
n.
v., blight·ed, blight·ing, blights. v.tr.
To suffer blight.
n.
- Any of numerous plant diseases resulting in sudden conspicuous wilting and dying of affected parts, especially young, growing tissues.
- The condition or causative agent, such as a bacterium, fungus, or virus, that results in blight.
- An extremely adverse environmental condition, such as air pollution.
- Something that impairs growth, withers hopes and ambitions, or impedes progress and prosperity.
v., blight·ed, blight·ing, blights. v.tr.
- To cause (a plant, for example) to undergo blight.
- To have a deleterious effect on; ruin. See synonyms at blast.
To suffer blight.
[Origin unknown.]
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Any of various plant diseases whose symptoms include sudden and severe yellowing, browning, spotting, withering, or dying of leaves, flowers, fruit, stems, or the entire plant. Usually the shoots and other young, rapidly growing tissues of a plant are attacked. Most blights are caused by bacteria or fungi ( fungus); some result from drought. Fungal and bacterial blights are most likely under cool, moist conditions. Most economically important plants are susceptible to one or more blights. Measures taken to fight blight include destroying the infected plant parts; using disease-free seed or stock and resistant varieties; rotating crops ( crop rotation); pruning and spacing plants for better air circulation; controlling pests that carry the fungus from plant to plant; avoiding overhead watering and working among wet plants; and, where needed, applying fungicides or antibiotics. Maintaining sanitary conditions is the most important measure for stopping the spread of the infestation. chestnut blight.
For more information on blight, visit Britannica.com.
Antonyms by Answers.com:
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blight
n
Definition: disease; plague
Antonyms: blessing, boon, bounty, health, prosperity
v
Definition: ruin, destroy
Antonyms: aid, bless, guard, help, prosper, protect
In plants, a fungus disease causing them to wither.
Columbia Encyclopedia:
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blight
blight, general term for any sudden and severe plant disease or for the agent that causes it. The term is now applied chiefly to diseases caused by bacteria (e.g., bean blights and fire blight of fruit trees), viruses (e.g., soybean bud blight), fungi (e.g., chestnut blight), and protists (e.g., potato blight). Other plant afflictions (caused by insects or unfavorable climatic conditions) that display similar symptoms are also called blights. See diseases of plants.
Word Tutor:
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blight
IN BRIEF: Something that spoils the look or health of something.
There is a sort of jealousy which needs very little fire; it is hardly a passion, but a blight bred in the cloudy, damp despondency of uneasy egoism.
— George Eliot (1819-1880), English novelist, pen name of Mary Ann Evans, from Middlemarch, bk. 2, ch. 21 (1871-72)
Tutor's tip: The "blight" (plant disease) affected the "blite" (weedy plant).
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categories related to 'blight'
- Violent Actions - blight: ruin; cause to wither or decay
See crossword solutions for the clue Wikipedia on Answers.com:
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Blight
This article is about plant diseases. For other senses of this word, see blight (disambiguation).
Blight refers to a specific symptom affecting plants in response to infection by a pathogenic organism. It is simply a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs.[1] Accordingly, many diseases that primarily exhibit this symptom are called blights. Several notable examples are:
- Late blight of potato, caused by the water mold Phytophthora infestans (Mont.) de Bary, the disease which led to the Great Irish Famine
- Southern corn leaf blight, caused by the fungus Cochliobolus heterostrophus (Drechs.) Drechs, anamorph Bipolaris maydis (Nisikado & Miyake) Shoemaker, incited a severe loss of corn in the United States in 1970.[2]
- Chestnut blight, caused by the fungus Cryphonectria parasitica (Murrill) Barr, has nearly completely eradicated mature American chestnuts in North America.
- 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.
- Bacterial leaf blight of rice, caused by the bacterium Xanthomonas oryzae (Uyeda & Ishiyama) Dowson.[3]
- Early blight of potato and tomato, caused by species of the ubiquitous fungal genus Alternaria
- Leaf blight of the grasses
On leaf tissue, symptoms of blight are the initial appearance of lesions which rapidly engulf surrounding tissue. However, leaf spot may, in advanced stages, expand to kill entire areas of leaf tissue and thus exhibit blight symptoms.
Gallery
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Chestnut blight
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Brown Felt Blight
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potato late blight
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Fire blight appletree fruit
References
- ^ Agrios, George N. Plant Pathology. 5th ed. Burlington, MA: Elsevier Academic Press, 2005.
- ^ Partridge, J.E. "Southern Corn Leaf Blight." 2003. 8 August 2006. http://nu-distance.unl.edu/homer/disease/agron/corn/CoSCLB.html
- ^ Oda, M., Sekizawa, Y., and Watanabe, T. 1966. "Phenazines as Disinfectants Against Bacterial Leaf Blight of the Rice Plant." Applied Microbiology 14(3):365-367.
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Look up blight in Wiktionary, the free dictionary. |
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
Translations:
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Blight
Dansk (Danish)
n. - plantesygdom
v. tr. - ramme med plantesygdom, ødelægge
v. intr. - blive ødelagt
Nederlands (Dutch)
bederven, vergallen, verpesten, afzichtelijkheid, aantasten, verzengen, vernietigen, bederf, ziekte, vloek
Français (French)
n. - rouille, nielle, mildiou, cloque (des arbres fruitiers)
v. tr. - nieller (du blé, etc), saccager, (fig) anéantir, détruire, ruiner (des espoirs), gâcher, briser (une carrière)
v. intr. - être attaqué (une récolte), (fig) être brisé (un mariage), être compromis (des chances), s'envoler (des espoirs), se gâcher (une enfance)
Deutsch (German)
n. - Fäule, Laus, etwas Zerstörendes, Schandfleck
v. - verderben, trüben, befallen
Ελληνική (Greek)
v. - κατακαίω, ξεραίνω, ματαιώνω
n. - φυτασθένεια (καπνιά, ερυσίβη, στάχτη), (εντομ.) αφίδα, (μτφ.) συμφορά, δεινό, πληγή
Português (Portuguese)
v. - fazer secar (planta), arruinar
n. - ferrugem (f) (Bot.), inseto (m) que causa a doença da ferrugem (Bot.) (Zool.)
Русский (Russian)
погубить, испортить, болезнь растений, деградация района
Español (Spanish)
n. - plaga, infortunio
v. tr. - estropear, arruinar, malograr
v. intr. - estropearse, arruinarse, malograrse
Svenska (Swedish)
v. - skada, fördärva
n. - brand, rost, sot, pest, fördärv
中文（简体）(Chinese (Simplified))
枯萎病, 打击, 不良影响, 使枯萎, 破坏, 摧残, 使颓丧, 患枯萎病, 颓丧, 枯萎
中文（繁體）(Chinese (Traditional))
n. - 枯萎病, 打擊, 不良影響
v. tr. - 使枯萎, 破壞, 摧殘, 使頹喪
v. intr. - 患枯萎病, 頹喪, 枯萎
한국어 (Korean)
n. - 충해, 오염된 대기, 파멸의 원인
v. tr. - ~을 말라 죽게 하다, ~을 망쳐 놓다
v. intr. - 말라죽다, 시들다
日本語 (Japanese)
n. - 胴枯れ病, その病因, 傷付けるもの, くじくもの, 荒廃, 虫害
v. - 枯らす, くじく, 枯れる, だめにする
العربيه (Arabic)
(فعل) أفسد, ابتلى, نكب (الاسم) آفه, عاهه
עברית (Hebrew)
n. - שידפון, מחלת דגנים, חרק או צמח טפילי הגורם לשידפון, איזור עירוני מוזנח, כוח לא-מוכר מזיק או הרסני
v. tr. - שדף, הרס, פגע, קילקל
v. intr. - לקה, כמש
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