Environmental adaptations: radiation tolerance

K. Ingemar Jönsson, Eliana B Levin, Andrzej Wojcik, Siamak Haghdoost, Mats Harms-Ringdahl

Forskningsoutput: Kapitel i bok/rapport/konferenshandlingKapitel i bok

Sammanfattning

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.

OriginalspråkEngelska
Titel på gästpublikationWater bears
Undertitel på gästpublikationthe biology of tardigrades
RedaktörerRalph O
UtgivningsortLund
FörlagSpringer
Sidor311-330
Antal sidor19
ISBN (elektroniskt)978-3-319-95702-9
ISBN (tryckt)978-3-319-95701-2
DOI
StatusPublicerad - 2019

Nationell ämneskategori

  • Zoologi (10608)

Fingeravtryck

Fördjupa i forskningsämnen för ”Environmental adaptations: radiation tolerance”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här