Preserving tardigrades under pressure

  title={Preserving tardigrades under pressure},
  author={Kunihiro Seki and Masato Toyoshima},
When an animal is exposed to high hydrostatic pressure, its cellular membranes,, proteins and DNA are damaged. At pressures of around 30 megapascals (MPa), proliferation and metabolism in micro-organisms stops; at 300 MPa, most bacteria and multicellular organisms die. But here we show that, in perfluorocarbon at pressures as high as 600 MPa, small terrestrial animals known as tardigrades can survive in a dehydrated state. 

High Hydrostatic Pressure Tolerance of Tardigrades

It is found that all of anhydrobiotic tardigrades survived after exposure to 1.

High Hydrostatic Pressure Tolerance of Four Different Anhydrobiotic Animal Species

Results indicated that the hydrated anhydrobiotes were vulnerable to HHP, but that HHP of 1.2 GPa was not sufficient to kill them in anhyrdobiosis.

Search for Lives under Very High Pressure and Extraordinary Strong Pressure-Tolerance of Animals and Plants

A cubic anvil press is applied to a biologi-cal study of search for lives under very high pressure of several GPa order or more and all the animals and plants tested were found alive after exposure to the hydrostatic pressure of 7.5 GPa.

Adaptations to environmental extremes by multicellular organisms

Some of the cryptobiotic strategies and adaptations exhibited in multicellular organisms are reviewed, and their relevance to astrobiology is pointed out.

High Hydrostatic Pressure Effects in the Biosphere: from Molecules to Microbiology

This chapter aims to give an outline of the effect of high hydrostatic pressure on proteins, lipids, nucleic acids, and their interactions and provide a thermodynamic and kinetic framework to

Effeets of High Pressure on Lipids and Biomembranes High-Pressure-Induced Biological Phenomena

It is concluded that high pressure induces decreases in biomembrane fluidity and phase transitions that result in breakage of the membrane, and leads to the destruction of bilayer membrane accompanied by denaturation of membrane-associated proteins.

Effect of very high pressure on life of plants and animals

It turned out that most of the high pressure exposed seeds of white clover were alive and these samples can survive after exposure to 7.5 GPa.