Claviceps purpurea

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er·got

(er'got),

The resistant, overwintering stage of the parasitic ascomycetous fungus Claviceps purpurea, a pathogen of cereal rye that transforms the seed of rye into a compact spurlike mass of fungal pseudotissue (the sclerotium) containing five or more optically isomeric pairs of alkaloids. The levorotary isomers induce uterine contractions, control bleeding, and alleviate certain localized vascular disorders (migraine headaches).
See also: ergotism.

Synonym(s): rye smut

[O. Fr. argot, cock's spur]

Farlex Partner Medical Dictionary © Farlex 2012

ergot

Herbal medicine
A fungus that infects rye, which is the primary source for ergonovine and ergotamine; its use in herbal medicine is confined to haemostasis and strengthening uterine contractions during childbirth.

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References in periodicals archive ?

Influence of certain factors on one in vitro production of ergot alkaloids by Claviceps purpurea. Canadian Journal of Microbiology, 4: 611-626.

Screening of Penicillium species and optimisation of culture conditions for the production of ergot alkaloids using surface culture fermentation process

Infection of barley by Claviceps purpurea. Canadian Journal of Botany 36:615-619.

Evolution and stasis in plant-pathogen associations

In 7 yr of commercial seed production, Freedom II has shown the potential for high yields of quality seed, with freedom from ergot [caused by Claviceps purpurea (Fr.) Tul.] honeydew and sclerotia.

Registration of 'Freedom II' Kentucky bluegrass

In 8 yr of commercial seed production, BlueChip has produced high yields of quality seed, with freedom from ergot honeydew and sclerotia [caused by Claviceps purpurea (Fr.) Tul.], and no adverse reactions to labeled Kentucky bluegrass pesticides.

Registration of 'BlueChip' Kentucky bluegrass

In 7 yr of commercial seed production, BlueMoon has demonstrated the potential for high yields of quality seed, relative freedom from ergot [caused by Claviceps purpurea (Fr.) Tul.], and no adverse reactions to labeled Kentucky bluegrass pesticides.

Registration of 'BlueMoon' Kentucky bluegrass

Ergot [caused by Claviceps purpurea (Fr:Fr) Tul.] has not been found in the cultivar when the disease was present in the other triticales under similar growing conditions.

Registration of `NE422T' winter triticale. (Registrations Of Cultivars)

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