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Cover Figure


COVER Normal and mutant strains of Neurospora crassa, a fungus that normally produces orange carotenoids (thought to provide protection from ultraviolet rays) in response to light. Deletion of the photoreceptor White Collar-1 blinds the fungus so that it fails to produce carotenoids, resulting in a white appearance. Loss of Vivid protein, a repressor of light-regulated processes, results in carotenoid overproduction and intense orange coloration. 815 [Image: C. Heintzen and A. Froehlich]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)