[Endosymbiotic bacteria and their relationship with chlorella in the ciliate Climacostomum virens].

Tsitologiia

Institute of Cytology RAS, Biological Research Institute, St. Petersburg State University, St. Petersburg.

Published: August 2003

Structure of cytoplasmic bacterial symbionts of chlorella-free ciliate Climacostomum virens has been investigated. It is shown that ciliates are not able to support simultaneously growth and duplication of two different symbionts--bacteria and chlorella. Cells of C. virens lost bacterial symbionts after an artificial infection with chlorella by microinjection. Competitive relationships between two endopionts are discussed.

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