Activation of ergot alkaloid biosynthesis in prototrophic isolates by Claviceps purpurea protoplast fusion. 1991

M Didek-Brumec, and V Gaberc-Porekar, and M Alacević, and S Milicić, and H Socic
LEK, Pharmaceutical and Chemical Works, Ljubljana, Yugoslavia.

Intraspecific protoplast fusions were carried out with active ergocornine-ergokryptine and inactive ergocristine Claviceps purpurea strains and vice versa. The isolated prototrophic strains from both types of crossings produced all three alkaloid types, showing that biosynthesis of distinct alkaloid was activated in an inactive partner strain. The prototrophic isolates were stable on minimal medium but they segregated by subculturing on complete medium. In comparison with the original partner strains, differences in morphological and cytological characteristics were also established.

UI MeSH Term Description Entries
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D011523 Protoplasts The protoplasm and plasma membrane of plant, fungal, bacterial or archaeon cells without the CELL WALL. Protoplast
D002967 Claviceps A genus of ascomycetous fungi, family Clavicipitaceae, order Hypocreales, parasitic on various grasses (POACEAE). The sclerotia contain several toxic alkaloids. Claviceps purpurea on rye causes ERGOTISM. Ergot Fungus,Claviceps purpurea,Sphacelia segetum,Fungus, Ergot
D003470 Culture Media Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN. Media, Culture
D004876 Ergot Alkaloids Alkaloids originally isolated from the ergot fungus Claviceps purpurea (Hypocreaceae). They include compounds that are structurally related to ergoline (ERGOLINES) and ergotamine (ERGOTAMINES). Many of the ergot alkaloids act as alpha-adrenergic antagonists. Clavine Alkaloids,Alkaloids, Clavine,Alkaloids, Ergot

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