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Science 16 July 1971:
Vol. 173. no. 3993, pp. 252 - 254
DOI: 10.1126/science.173.3993.252
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Articles

Euglena gracilis: Formation of Giant Mitochondria

Regis Calvayrac 1, Fred Van Lente 1, and Ronald A. Butow 1

1 Department of Biochemical Sciences, Frick Chemical Laboratory, Princeton University, Princeton, New Jersey 08540

The addition of antimycin A (0.5 microgram per milliliter) to cultures of a bleached strain of Euglena gracilis in the logarithmic phase of growth on succinate as a carbon source results in (i) an interruption of growth for 24 hours and (ii) an increase in whole-cell respiration and the emergence of a novel succinoxidase activity within 2 to 4 hours. After 3 to 5 hours, the mitochondria enlarge, fuse, and form a sheathlike structure situated close to the periphery of the cell.

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