Tag

Extremophiles

All articles tagged with #extremophiles

science16 days ago•2 min saved

Fire Amoeba Shatters Heat Record for Complex Life in California Volcanic Springs

A newly identified amoeba, Incendimentoeba cascadensis, has broken the previous temperature limit for eukaryotic life by surviving and reproducing at 63°C (145°F). Discovered in geothermal streams at California’s Lassen Volcanic National Park, this organism challenges previous assumptions about the thermal stability of complex cell membranes and offers new insights into the potential for life in extreme environments.

via ScienceAlert|

#astrobiology #biology #climate-change

science17 days ago•4 min saved

Fire amoeba shatters heat limits, surviving at 63C

Researchers have identified Incendiamoeba cascadensis, a protein-armoured 'fire amoeba' from Lassen Volcanic National Park, that grows at 57C and duplicates at 63C—the highest temperature yet for a complex life form. It can endure brief 70C exposure by reshaping and forming a protective outer layer, then recover when cooled. The organism carries extra genes tied to protein maintenance and DNA repair, hinting at eukaryotic adaptations and opening possibilities for biotech applications, while reminding that climate change could threaten geothermal ecosystems.

via Financial Times|

#biotechnology #extremophiles #heat-tolerance

science23 days ago•12 min saved

Gaet’ale Pond: life persists in Earth’s hottest, saltiest pool

Gaet’ale Pond in Ethiopia’s Danakil Depression holds a record salinity of 433 g/kg (about 43% by weight) and sits at roughly 50–55 C, with a calcium- and magnesium-chloride brine and no inflow or outflow. The extreme conditions have made the site a key natural lab for habitability research, and while some nearby pools may be sterile, Gaet’ale hosts bacteria according to a 2021 metagenomic study, highlighting that life can endure in environments far harsher than the ocean—and informing astrobiology analogs for Mars and Titan.

via Space Daily|

#astrobiology #danakil-depression #extremophiles

science2 months ago•15 min saved

Sunless 5.5-Million-Year Lab: Movile Cave Hosts 48 Chemosynthetic Species

In Movile Cave near Mangalia, Romania, an 18‑metre‑deep, sunless chamber sealed for about 5.5 million years hosts 48 species—33 endemic—fed by chemosynthetic bacteria oxidising hydrogen sulfide; the largely eyeless, pigmentless community shows life can thrive on chemical energy without sunlight and informs astrobiology about potential life on other sunless worlds.

via Space Daily|

#chemosynthesis #endemic-species #extremophiles

science2 months ago•8 min saved

Hardiest Life: Microbes That Call Earth’s Most Extreme Places Home

Extremophiles—primarily bacteria and archaea—thrive in Earth’s hottest, coldest, saltiest, acidic, and high-pressure environments, from the Danakil Depression to deep-sea vents, offering insights into evolution, enabling industrial biotech and bioremediation, and guiding our search for life beyond Earth.

via Quanta Magazine|

#astrobiology #biotechnology #extremophiles

science3 months ago•13 min saved

Ancient Antarctic Lake Yields Hidden Life After 15 Million Years

In 2012, a Russian drill punched into Lake Vostok, a Lake Ontario-sized subglacial lake beneath East Antarctica sealed for about 15 million years. The refrozen borehole plug contained DNA from organisms that evolved in total darkness, including novel sequences, showing that life can persist without sunlight and providing a valuable analogue for icy worlds like Europa and Enceladus. Contamination concerns linger and future sterile robotic sampling has been discussed, but the lake remains isolated for now as scientists refine its hidden ecosystem and its implications for life beyond Earth.

via Space Daily|

#antarctica #astrobiology #extremophiles

science4 months ago•6 min saved

Tiny Nematode from Great Salt Lake Opens Window on Life in Extreme Salinity

Researchers from the University of Utah describe Diplolaimelloides woaabi, a tiny free-living nematode under 1.5 mm found in the Great Salt Lake’s microbialites, making it the lake’s third known metazoan and potentially a key indicator of ecosystem health in extreme salinity as researchers debate its origins—ancient seaway remnants or migratory birds—and study its unique anatomy and genetics through sequencing and microscopy.

via SciTechDaily|

#diplolaimelloides-woaabi #extremophiles #great-salt-lake

science5 months ago•3 min saved

Life Persists in 400°C Black Smokers at Beebe Vent Field, the Ocean’s Deepest Vents

A deep-sea ROV explored the Cayman Trough and found the Beebe Vent Field, the deepest hydrothermal vents at about 4,968 meters. The vents spew near-boiling fluids that remain liquid under high pressure; life thrives via chemosynthesis, with organisms like eelpout fish, anemones, squat lobsters, and shrimp with light-sensing organs inhabiting the black-smoker environment.

via BBC Wildlife Magazine|

#beebe-vent-field #chemosynthesis #deep-sea

science5 months ago•5 min saved

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

science5 months ago•36 min saved

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

science5 months ago•4 min saved

Tiny Yeast Fends Off Mars‑Like Shock With RNA‑Protein Shields

Researchers exposed Saccharomyces cerevisiae to Mars-like shock waves generated by the HISTA tube and 100 mM sodium perchlorate, finding that yeast survive (though slower) due to ribonucleoprotein (RNP) condensates—stress granules and P-bodies—that protect RNA and proteins; yeast unable to form these condensates showed sharply reduced survival, suggesting even simple life could endure extreme planetary conditions and informing future space exploration models.

via The Daily Galaxy|

#extremophiles #mars #perchlorate

science6 months ago•4 min saved

Desert Moss Could Kickstart Mars Habitats by Surviving Extreme Dehydration

Researchers spotlight Syntrichia caninervis, a desert moss from Earth, as a potential Mars pioneer: it can survive near-total dehydration (losing up to 98% of its water), endure temperatures as low as -196°C, and resist gamma radiation, suggesting it could gradually modify Martian soil and even produce oxygen, with scientists exploring whether such traits could eventually boost crops like wheat for long‑term space missions.

via The Daily Galaxy|

#dehydration-tolerance #extremophiles #mars

science7 months ago•6 min saved

Tiny Nematodes Discovered Living Deep in Great Salt Lake Sediments

University of Utah researchers report finding microscopic nematodes living in the sediment beneath Great Salt Lake, revealing a hidden layer of biodiversity in this hypersaline environment. Genetic analysis identified multiple nematode species that inhabit lakebed spaces, feeding on bacteria and organic matter to help recycle nutrients and potentially shaping the lake’s microbial ecosystem. The discovery, published in the Journal of Nematology, expands our understanding of life in extreme habitats.

via The Daily Galaxy|

#biodiversity #extremophiles #great-salt-lake

space-and-spaceflight7 months ago•16 min saved

Tiny Life Survives Asteroid-Scale Shock in Lithopanspermia Test

Johns Hopkins researchers simulated the harsh journey life might take on a rock traveling between planets, blasting Deinococcus radiodurans between metal plates at speeds up to 300 mph to mimic asteroid ejection from Mars. The microbes withstood 1–3 gigapascals of pressure, with only some internal damage, while the steel plates failed. The study lends support to the lithopanspermia idea that life could hitch rides on asteroids, but it remains unproven and limited in scope, and it underscores the need for planetary protection and further testing on other extremophiles.

via Gizmodo|

#asteroids #astrobiology #extremophiles

science7 months ago•5 min saved

Deep-Sea Archaea Survive Extreme Radiation: A Byproduct of Hydrothermal Vent Life

Scientists report Thermococcus gammatolerans, an archaeon living near Guaymas Basin vents, can endure gamma radiation up to 30,000 grays—far more than lethal human doses. Its radiation tolerance isn’t due to extra DNA repair genes but likely arises from the harsh vent environment, which reduces oxidative damage and enables rapid repair, suggesting the trait is a byproduct of hydrothermal-vent life rather than a specialized adaptation.

via ScienceAlert|

#dnarepair #extremophiles #hydrothermalvents