phytoalexin
noun Etymology: International Scientific Vocabulary phyt- + alexin substance combating infection, from Greek alexein to ward off, protect; akin to Sanskrit rakṣati he protects Date: 1949 any of various antimicrobial chemical substances produced by plants to combat infection by a pathogen (as a fungus)

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • phytoalexin — [fīt΄ō ə lek′sin] n. [< PHYTO + Gr alexein, to defend] an antibiotic produced by a plant in response to the intrusion of a disease producing agent, esp. a fungus …   English World dictionary

  • Phytoalexin — Phytoalexine (gr. phytos = Pflanze, alekein = abwehren ) sind niedermolekulare, antimikrobielle chemische Verbindungen, die unmittelbar nach einer Infektion durch Mikroorganismen (wie Bakterien oder Pilzen), von der Pflanze produziert werden, um… …   Deutsch Wikipedia

  • Phytoalexin — Phytoalexins are antibiotics produced by plants that are under attack. Phytoalexins tend to fall into several classes including terpenoids, glycosteroids and alkaloids; however, researchers often find it convenient to extend the definition to… …   Wikipedia

  • phytoalexin — /fuy toh euh lek sin/, n. Biochem. any of a class of plant compounds that accumulate at the site of invading microorganisms and confer resistance to disease. [1945 50; PHYTO + ALEXIN] * * * …   Universalium

  • phytoalexin — noun any of several classes of antibiotics produced by plants in response to microorganisms …   Wiktionary

  • Phytoalexin — Phy|to|a|le|xin [↑ phyt u. ↑ Alexin], das; s, e: von Pflanzen aufgrund von Stresseinwirkungen oder Schadorganismenbefall (↑ Peptaibole) gebildete niedermol. Abwehrstoffe mit antimikrobiellen Eigenschaften. Vgl. Phytonzide …   Universal-Lexikon

  • phytoalexin — phy·to·a·lex·in (fi″to ə lekґsin) any of a group of compounds formed in plants in response to fungal infection, physical damage, chemical injury, or a pathogenic process. Phytoalexins inhibit or destroy the invading agent …   Medical dictionary

  • phytoalexin — [ˌfʌɪtəʊə lɛksɪn] noun Botany a substance that is produced by plant tissues in response to contact with a parasite and specifically inhibits the growth of that parasite. Origin 1940s: from phyto + alexin, a name for a class of substances found in …   English new terms dictionary

  • phytoalexin — phy·to·alexin …   English syllables

  • phytoalexin — phy•to•a•lex•in [[t]ˌfaɪ toʊ əˈlɛk sɪn[/t]] n. biochem. bot any of a class of plant compounds that accumulate at the site of invading microorganisms and confer resistance to disease • Etymology: 1945–50; phyto +alexin an immunological complement… …   From formal English to slang

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