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Diversity of Endosymbiotic Bacteria inParamecium

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Book cover Endosymbionts in Paramecium

Part of the book series: Microbiology Monographs ((MICROMONO,volume 12))

Abstract

For about one and a half centuries now microbial symbioses in Paramecium have been observed and investigated. Meanwhile a great diversity of endosymbiotic bacteria is known in many of the different species of Paramecium. Paramecium is a unicellular but complete eukaryotic organism. For microbial symbionts, the large cells offer plenty of space and a variety of niches of different metabolic conditions. Bacteria living in the cytoplasm, in micronuclei or macronuclei, or even in the perinuclear space show quite different life strategies. Peculiar adaptations to the symbiotic mode of life have stimulated research in different fields, such as microbiology, cell biology, physiology, ecology, and ­phylogenetics. The symbionts of Paramecium not only turn out to belong to different taxa of Eubacteria, but some appear to be related to human pathogens. As a special highlight, an endonuclear symbiont of Paramecium, Holospora obtusa, may be the closest relative of mitochondria known to date.

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Authors and Affiliations

  1. Department of Zoology, Biologisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569, Stuttgart, Germany

    Hans-Dieter Görtz

  2. Department of Zoology Invertebrate, Biological and Soil Faculty, St. Petersburg State University, Universitetskaya emb. 7/9, 199034, St. Petersburg, Russia

    Sergei I. Fokin

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  1. Hans-Dieter Görtz
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Correspondence to Hans-Dieter Görtz .

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  1. Graduate School of Science and Eng., Dept. of Environmental Sci. and Eng., Yamaguchi University, Yoshida 1677-1, Yamaguchi, 753-8512, Japan

    Masahiro Fujishima

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Görtz, HD., Fokin, S.I. (2009). Diversity of Endosymbiotic Bacteria inParamecium . In: Fujishima, M. (eds) Endosymbionts in Paramecium. Microbiology Monographs, vol 12. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-92677-1_6

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