phytoalexins


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phytoalexins (fā·tō··lekˑ·sēnz),

n.pl poisonous compounds that plants develop when they respond to attacks.

phytoalexins

substances in plants which destroy plant pathogens. They are released in response to a chemical substance released by the pathogen.
References in periodicals archive ?
leia-se: "explore the produced phytoalexins in various parts of plants"
Effect of soybean phytoalexins on the herbivorous insects Mexican bean beetle and soybean looper.
Photochemical dimerization of wasalexins in UV-irradiated Thellungiella halophila and in vitro generates unique cruciferous phytoalexins.
Sulfur compounds such as phytoalexins and glucosinolates, may be important enhancers of the protection of plants to adverse agents such as arthropods and plant pathogens (Dubuis 2004; Hell and Kruse 2007, Bohinc et al.
In the hypersensitive response (HR), plant produces antimicrobial agents, called phytoalexins, and PR proteins (pathogenesis related proteins) in the infected tissues through the usual response mechanism with an Avr-R interaction.
Andrew A, Oliva C, Distel S, Daleo G (2000) Production of phytoalexins, glycoalcaloids and phenolics in leaves and tubers of potato cultivars with different degrees of field resistance after infection with Phytophthora infestans.
At phytotoxic levels, protox inhibitors such as acifluorfen induce phenylalanine ammonia-lease, which increases phytoalexins and stress metabolites in plants (e.
Kauralexins and zealexins, members of a larger family of plant-defense compounds known as "terpenoid phytoalexins," are also partly triggered by insect chewing--with Ostrinia nubilalis, the European corn borer, among species that find them distasteful.
3] Barz W, Daniel S, Hinderer W, Jaques U, Kessmann H, Koster J & Tiemann K (1988) Elicitation and metabolism of phytoalexins in plant cell cultures.
Light and singlet oxygen in plant defense against pathogens:phototoxic phenalenone phytoalexins.
5,7-Dihydroxy-3 ethylchromone and its 7-O-methyl ether were reported as phytoalexins of Lathyrus odoratus (22) possessing fungitoxicity against Helminthosporium carbonum.