Scenedesmus obliquus Sexuality

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Science  21 May 1965:
Vol. 148, Issue 3673, pp. 1094-1095
DOI: 10.1126/science.148.3673.1094


The flagellated cells of two mixed strains of Scenedesmus obliquus can initiate a sexual cycle when grown at 15°C in a defined medium lacking a nitrogen source. Clumps of five to ten cells, paired gametes, plasmogamy, and quadriflagellated zygotes were observed.