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

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Science  01 Dec 1978:
Vol. 202, Issue 4371, pp. 975-977
DOI: 10.1126/science.202.4371.975


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.