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Chloroplast-Retention in Ciliated Protozoa

  • Diane K. Stoecker

Abstract

Plastid-retention differs in important respects from algal endosymbiosis. Unlike endosymbionts, plastids lack the genes that code for the polymerases necessary to replicate their own DNA. Thus, unless suitable nuclear gene products are present in the host cell and transferred to the plastids, the plastids cannot replicate and are evolutionarily dead. However, many protozoans have evolved mechanisms to “enslave” plastids. These adaptations range from perhaps fortuitous to apparently highly evolved. They present us with the opportunity to study organelle-cell interactions and mixotrophy (use of alternative modes of nutrition; e.g., photosynthesis and phagocytosis) from a unique perspective.

Keywords

Algal Cell Benthic Foraminifera Thin Arrow Digestive Vacuole Planktonic Ciliate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1992

Authors and Affiliations

  • Diane K. Stoecker
    • 1
  1. 1.Horn Point Environmental LaboratoryThe University of Maryland SystemCambridgeUSA

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