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Environmental adaptations: radiation tolerance
Kristianstad University, Faculty of Natural Science, Research environment Man & Biosphere Health (MABH). Kristianstad University, Faculty of Natural Science, Avdelningen för miljö- och biovetenskap.ORCID iD: 0000-0002-1732-0372
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Stockholm University.
Stockholm University & France.
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2019 (English)In: Water bears: the biology of tardigrades / [ed] Ralph O Schill, Springer, 2019, p. 311-330Chapter in book (Other academic)
Abstract [en]

Several studies in different species have documented that tardigrades are among the most radiation-tolerant animals on Earth, surviving doses of ionizing radiation on the order of kGy. Both low-LET and high-LET radiation have been used with no apparent differences in the tolerance of the animals. Tolerance to ionizing radiation in tardigrades also seems to be independent of whether the animal has entered a dry anhydrobiotic state or is hydrated with normal activity. However, when exposed to UV radiation, desiccated tardigrades show a higher tolerance than hydrated animals. Recent studies in several species have shown that tardigrade embryos have considerably lower tolerance to ionizing radiation compared to adults, and embryos in the early stage of development are clearly more sensitive to radiation than those in the late developmental stage. The molecular mechanisms behind radiation tolerance in tardigrades are still largely unclear, but available evidence suggests that mechanisms related to both the avoidance of DNA damage and the repair of damage are involved.

Place, publisher, year, edition, pages
Springer, 2019. p. 311-330
Keywords [en]
Tardigrada biodiversity anhydrobiosis cryobiosis cryptobiosis diapause dormancy dormant state eutardigrades heat tolerance heterotardigrades extreme environments parthenogentic
National Category
Zoology Biological Sciences
Identifiers
URN: urn:nbn:se:hkr:diva-19109DOI: 10.1007/978-3-319-95702-9ISBN: 978-3-319-95701-2 (print)ISBN: 978-3-319-95702-9 (electronic)OAI: oai:DiVA.org:hkr-19109DiVA, id: diva2:1292114
Available from: 2019-02-27 Created: 2019-02-27 Last updated: 2019-02-27Bibliographically approved

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Jönsson, K. Ingemar
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CiteExportLink to record
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Citation style
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