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Cryptobiosis

All articles tagged with #cryptobiosis

Moon Poles Could Shelter Earth Microbes, NASA Study Finds
space-and-spaceflight7 days ago

Moon Poles Could Shelter Earth Microbes, NASA Study Finds

NASA researchers tested five Earth microbes (including Deinococcus radiodurans and Aspergillus niger) in simulated lunar conditions and found that shadowed lunar polar pockets could preserve microbes in cryptobiosis, suggesting the Moon may be less inhospitable than thought and that astronauts could unintentionally contaminate it; the study in Science Advances used LRO data to map radiation and UV exposure and highlights cold traps at the poles as potential refuges for microbial life, raising planetary-protection considerations and opportunities for future sterile experiments.

via Gizmodo|
#astrobiology#cryptobiosis#lunar-poles
46,000-Year-Old Nematodes Come Back to Life From Siberian Permafrost
science22 days ago

46,000-Year-Old Nematodes Come Back to Life From Siberian Permafrost

Scientists revived Panagrolaimus kolymaensis, a 46,000-year-old nematode from Siberian permafrost; after thawing it briefly survived and then reproduced asexually for 100+ laboratory generations, with cryptobiosis and trehalose helping its cells endure freezing. The finding, reported in PLoS Genetics, offers new insights into evolutionary timelines, generation variability, and the potential to study resurrected ancient lineages for biodiversity and extinction-prevention research.

via Giant Freakin Robot|
#cryptobiosis#genetics#nematodes
Tardigrades Survive the Extreme by Turning into a Glassy, Time-Stopped State
science3 months ago

Tardigrades Survive the Extreme by Turning into a Glassy, Time-Stopped State

Tardigrades endure boiling, freezing, vacuum, and high radiation by drying into a glass-like tun that halts metabolism. This cryptobiosis is enabled by tardigrade-specific proteins (TDPs) that form a protective amorphous solid and the Dsup protein that shields DNA from radiation. They’ve been revived after years and even sent to space (ISS), with ongoing studies aiming to apply these mechanisms for radioprotection and dry, room-temperature biomedical storage, though translating to humans remains far off.

via Space Daily|
#cryptobiosis#dsup#radioprotection
Ancient rotifer revived from 24,000-year freeze and begins reproducing
science4 months ago

Ancient rotifer revived from 24,000-year freeze and begins reproducing

Scientists thawed a 24,000-year-old rotifer preserved in Siberian permafrost, revived it under strict lab conditions, and observed renewed metabolism and asexual reproduction, showing that multicellular life can endure cryptobiosis for millennia. The finding has implications for biotechnology and astrobiology, though researchers caution that revival of larger animals is unlikely.

via New York Post|
#asexual-reproduction#cryptobiosis#permafrost
24,000-Year-Old Rotifer Revived From Siberian Permafrost Demonstrates Cryptobiosis Longevity
science4 months ago

24,000-Year-Old Rotifer Revived From Siberian Permafrost Demonstrates Cryptobiosis Longevity

Scientists thawed a 24,000-year-old rotifer from Siberian permafrost, revived it under controlled conditions, and observed asexual reproduction, showing that multicellular life can endure cryptobiosis for tens of thousands of years; while promising for biology and astrobiology, experts caution that revival of larger organisms is unlikely and thawing permafrost raises environmental and health questions.

via Fox News|
#ancient-life#cryptobiosis#extremophiles
Ancient Arctic Rotifer Brought Back to Life and Reproduces, After 24,000 Years
science4 months ago

Ancient Arctic Rotifer Brought Back to Life and Reproduces, After 24,000 Years

Scientists thawed a 24,000-year-old rotifer from Siberian permafrost, observed it resume normal function, and even reproduce asexually, marking a milestone in showing multicellular life can survive cryptobiosis under extreme cold. The work suggests longevity of cellular structures in long-term frozen states and has implications for biology and astrobiology, though experts caution that revival of larger organisms is unlikely.

via Yahoo|
#cryptobiosis#extremophiles#permafrost
Tardigrades as Earth’s Enduring Survivors: Tiny Creatures, Big Implications
science4 months ago

Tardigrades as Earth’s Enduring Survivors: Tiny Creatures, Big Implications

Oxford and Harvard researchers find tardigrades—the water bears—are the most likely animals to outlive Earth’s final catastrophe, thanks to cryptobiosis and refuges in deep oceans; true planetary sterilization would require boiling the oceans, a feat only achievable by an extraordinarily massive asteroid or rare stellar explosions, while microbes would likely survive and ecological collapse could still wipe out all life even if some tardigrades endure.

via Indian Defence Review|
#astrobiology#cryptobiosis#extinction
Tardigrades: Earth's Last Survivors Even If Oceans Boil
science5 months ago

Tardigrades: Earth's Last Survivors Even If Oceans Boil

A Harvard–Oxford study models what energy would be needed to sterilize Earth and identifies tardigrades as the ultimate survivors, capable of cryptobiosis and thriving in deep-ocean refuges; while surface catastrophes like asteroid impacts or nearby supernovae could devastate ecosystems, boiling the oceans would be the threshold to erase resilient life, suggesting life could endure long after humans are gone.

via The Daily Galaxy|
#cryptobiosis#deep-ocean-refuges#extinction
"Unintended Moon Colonization: Tardigrades and the 2019 Space Crash"
science-and-technology2 years ago

"Unintended Moon Colonization: Tardigrades and the 2019 Space Crash"

The crash landing of the Beresheet probe on the moon in 2019 may have inadvertently brought microscopic tardigrades, known for their extreme resilience, to the lunar surface. While these lifeforms can survive in harsh conditions through cryptobiosis, the moon's inhospitable environment, lacking essential elements for life, makes it unlikely for them to thrive. This incident raises concerns about unintentional contamination of celestial bodies during space exploration.

via Giant Freakin Robot|
#beresheet-probe#cryptobiosis#moon
"Unveiling the Secret Weapon: How Tardigrades Achieve Near-Invincibility"
science2 years ago

"Unveiling the Secret Weapon: How Tardigrades Achieve Near-Invincibility"

Scientists have discovered a key mechanism that allows tardigrades to undergo cryptobiosis, a state of death-like dormancy that enables them to survive extreme conditions. The research suggests that reactive oxygen species (ROS) play a crucial role in mediating the process of cryptobiosis by signaling the oxidation of the amino acid cysteine. This finding opens up new avenues for investigating the survival strategies of these remarkable creatures.

via Gizmodo|
#cryptobiosis#research#ros
Resurrecting a 46,000-year-old Frozen Worm
science-and-technology3 years ago

Resurrecting a 46,000-year-old Frozen Worm

Researchers have successfully reanimated a soil nematode that had been dormant in Siberian permafrost for approximately 46,000 years. The nematode, identified as a new species called Panagrolaimus kolymaensis, shares genes related to survival with the model organism Caenorhabditis elegans. Exposure to mild desiccation before freezing improved the nematodes' survival capabilities, suggesting the potential for long-term dormant survival in extreme conditions. This study extends the known cryptobiosis period in nematodes by tens of thousands of years and highlights the role of environmental fluctuations in determining the duration of cryptobiotic states.

via SciTechDaily|
#cryptobiosis#genome-sequencing#nematode