Effect of Dim Light on the y-1 Mutant of Chlamydomonas reinhardtii.
The y-1 mutant of Chlamydomonas reinhardtii tends to die or revert to wild type when grown in the dark for a long period of time. A small amount of white light (0.5 lux) enables the y-1 mutant to grow indefinitely in a "near dark" condition. Under this condition, the y-1 mutant is physiologically and ultrastructurally similar to the dark-grown y-1 yet remains genetically stable.
Wang
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Department of Botany, University of Iowa, Iowa City, Iowa 52242.