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J Insect Physiol. 2011 May;57(5):577-83. doi: 10.1016/j.jinsphys.2011.03.019. Epub 2011 Apr 1.

Anhydrobiosis in tardigrades--the last decade.

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  • 1Molecular Biology and Functional Genome Analysis, University of Applied Sciences Wildau, Germany. wwelnicz@th-wildau.de

Abstract

The current state of knowledge about anhydrobiosis in tardigrades is presented. In response to adverse environmental conditions tardigrades arrest their metabolic activity and after complete dehydration enter the so-called "tun" state. In this ametabolic state they are able to tolerate exposure to various chemical and physical extremes. These micrometazoans have evolved various kinds of morphological, physiological and molecular adaptations to reduce the effects of desiccation. In this review we address behavioral adaptation, morphological features and molecules which determine the anhydrobiotic survival. The influence of the time spent in anhydrobiotic state on the lifespan and DNA and the role of the antioxidant defense system are also considered. Finally we summarize recent input from the "omics" sciences.

Copyright © 2011 Elsevier Ltd. All rights reserved.

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