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  • Title: PRESSURE-INDUCED COLOR MUTATION OF EUGLENA GRACILIS.
    Author: GROSS JA.
    Journal: Science; 1965 Feb 12; 147(3659):741-2. PubMed ID: 14242019.
    Abstract:
    Photosynthetic cultures of Euglena gracilis Z which were illuminated during growth were more resistant to the lethal effect of high hydrostatic pressures than nonphotosynthetic cultures grown in the dark. A high percentage of mutants permanently lacking chlorophyll and with altered carotenoids was obtained after subjecting cultures to high pressure. A minimum pressure of 500 atmospheres was critical for color mutation and morphological change. The highest effective pressure used was 1000 atmospheres.
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