Resting Cyst Formation as a Strategy for Environmental Adaptation in Colpodid Ciliates

Yoichiro Sogame; Ryota Saito; Shuntaro Hakozaki

doi:10.2108/zs240058

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Yoichiro Sogame,^* Ryota Saito,^** Shuntaro Hakozaki^***

^*Corresponding author. E-mail: sogame@fukushima-nct.ac.jp
^**Present address: Department of Chemistry and Biotechnology, Kochi University, Kochi, Kochi 780-8520, Japan
^***Present address: Faculty of Symbiotic Systems Science, Fukushima University, 1, Kanayagawa, Fukushima, Fukushima 960-1296, Japan

Abstract

Resting cyst formation is a strategic aspect of the life cycle of some eukaryotes such as protists, and particularly ciliates, that enables adaptation to unfavorable environmental conditions. The formation of resting cysts involves large scale morphological and physiological changes that provide tolerance of extreme environmental stresses. The resting cyst shows suppression of normal features of life such as eating, moving, proliferation, and even mitochondrial metabolic activity, and appears lifeless. This review discusses resting cyst formation in the ciliates Colpoda as a representative model of cyst-forming organisms, and focusses on morphogenesis, molecular events, tolerances, and metabolic activities in resting cysts.

Citation Download Citation

Yoichiro Sogame, Ryota Saito, and Shuntaro Hakozaki "Resting Cyst Formation as a Strategy for Environmental Adaptation in Colpodid Ciliates," Zoological Science 42(1), 96-106, (30 January 2025). https://doi.org/10.2108/zs240058

Received: 28 June 2024; Accepted: 4 December 2024; Published: 30 January 2025

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