Abstract

Cultures of Curvularia pallescens growing in a modified Czapek-Dox medium produce no lipophilic pigments under conditions of constant illumination or constant darkness; however, cultures grown in an alternating 12-h light-12-h dark cycle produce a red pigment, which is identified as cynodontin on the basis of physicochemical data, together with trace amounts of other pigments presumed also to be hydroxyanthraquinones. It is further suggested that a pigment previously identified as 1,4,5,8-tetrahydroxy-2,6-dimethylanthraquinone is also cynodontin.

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