PIGMENTS OF ELSINOË SPECIES: I. PIGMENT PRODUCTION BY ELSINOË SPECIES; ISOLATION OF PURE ELSINOCHROMES A, B, AND C

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Abstract
The production of pigments by fungi of the genus Elsinoë (Ascomycetes) and the corresponding imperfect stage, Sphaceloma, has been studied. Three closely related pigments, the elsinochromes A, B, and C, are formed by most of them in varying proportions. These pigments have been isolated in pure form and have been shown to be derivatives of 4,9-dihydroxyperylene-3,10-quinone. The same pigments are also formed by an imperfect fungus designated as "Phyllosticta caryae Pk." However, this fungus had been identified earlier as a conidial stage of E. randii Jenkins and Bitancourt, an interpretation which is supported by the present findings concerning pigment production.

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