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Science 1 December 1978:
Vol. 202. no. 4371, pp. 975 - 977
DOI: 10.1126/science.202.4371.975
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Articles

Calcium-Induced Contraction of the Rhizoplast of a Quadriflagellate Green Alga

J. L. SALISBURY 1 and G. L. FLOYD 1

1 Botany Department, Ohio State University, Columbus 43210

The rhizoplast of Platymonas subcordiformis is a contractile organelle. Cyclic contraction and extension are induced by incubating the organism in solutions containing calcium and adenosine triphosphate. Rhizoplast contraction is functionally linked to flagellar activity.

Submitted on April 27, 1978
Revised on June 14, 1978


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