* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Sunday, June 29, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Susquehanna Raises Penn Entertainment Inc. (PENN) Price Target. – Yahoo Finance

    Susquehanna Raises Price Target for Penn Entertainment Inc. (PENN)

    George Lopez is coming to Spokane – KXLY.com

    George Lopez is coming to Spokane – KXLY.com

    Netflix unveils Dallas immersive venue for fans of hit shows like ‘Squid Game,’ ‘Stranger Things’ – Houston Chronicle

    Step Inside Netflix’s New Dallas Immersive Experience Featuring Hits Like ‘Squid Game’ and ‘Stranger Things

    ‘Puttin’ on the Ritz’: Civic Players bring ‘Young Frankenstein’ to life – Yahoo

    Civic Players Deliver a Hilarious and Unforgettable Performance of ‘Young Frankenstein

    ‘Wheel of Fortune’: Amputee Wins $60,000 After Breaking Incredible ‘Curse’ – Hastings Tribune

    Wheel of Fortune’ Amputee Breaks Incredible ‘Curse’ to Win $60,000!

    North Star Sports & Entertainment Network: Coming soon – KTTC News

    North Star Sports & Entertainment Network: Coming soon – KTTC News

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Emerging Memory and Storage Technology Market Analysis Report 2025-2034 | AI and HPC Boom Fuels Surging Demand for Fast, Low-Power Memory Devices – Yahoo Finance

    How AI and HPC Are Driving Explosive Growth in Fast, Low-Power Memory Technologies Through 2034

    Ostin Technology (OST): Volatility’s Warning or Contrarian Opportunity? – AInvest

    Ostin Technology (OST): Navigating Market Volatility – Red Flag or Hidden Opportunity?

    St. Francis Medical Center brings advanced robotic surgery technology to Northeast Louisiana – KNOE

    St. Francis Medical Center brings advanced robotic surgery technology to Northeast Louisiana – KNOE

    Wayve Expands Engineering Leadership to Power Next-Gen Autonomous Driving Technology – Silicon Canals

    Wayve Boosts Engineering Leadership to Accelerate Next-Gen Autonomous Driving Innovation

    Frontdoor Announces Tech Expert Dr. Bala Ganesh as Chief Technology Officer – Business Wire

    Frontdoor Appoints Tech Visionary Dr. Bala Ganesh as New Chief Technology Officer

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Susquehanna Raises Penn Entertainment Inc. (PENN) Price Target. – Yahoo Finance

    Susquehanna Raises Price Target for Penn Entertainment Inc. (PENN)

    George Lopez is coming to Spokane – KXLY.com

    George Lopez is coming to Spokane – KXLY.com

    Netflix unveils Dallas immersive venue for fans of hit shows like ‘Squid Game,’ ‘Stranger Things’ – Houston Chronicle

    Step Inside Netflix’s New Dallas Immersive Experience Featuring Hits Like ‘Squid Game’ and ‘Stranger Things

    ‘Puttin’ on the Ritz’: Civic Players bring ‘Young Frankenstein’ to life – Yahoo

    Civic Players Deliver a Hilarious and Unforgettable Performance of ‘Young Frankenstein

    ‘Wheel of Fortune’: Amputee Wins $60,000 After Breaking Incredible ‘Curse’ – Hastings Tribune

    Wheel of Fortune’ Amputee Breaks Incredible ‘Curse’ to Win $60,000!

    North Star Sports & Entertainment Network: Coming soon – KTTC News

    North Star Sports & Entertainment Network: Coming soon – KTTC News

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Emerging Memory and Storage Technology Market Analysis Report 2025-2034 | AI and HPC Boom Fuels Surging Demand for Fast, Low-Power Memory Devices – Yahoo Finance

    How AI and HPC Are Driving Explosive Growth in Fast, Low-Power Memory Technologies Through 2034

    Ostin Technology (OST): Volatility’s Warning or Contrarian Opportunity? – AInvest

    Ostin Technology (OST): Navigating Market Volatility – Red Flag or Hidden Opportunity?

    St. Francis Medical Center brings advanced robotic surgery technology to Northeast Louisiana – KNOE

    St. Francis Medical Center brings advanced robotic surgery technology to Northeast Louisiana – KNOE

    Wayve Expands Engineering Leadership to Power Next-Gen Autonomous Driving Technology – Silicon Canals

    Wayve Boosts Engineering Leadership to Accelerate Next-Gen Autonomous Driving Innovation

    Frontdoor Announces Tech Expert Dr. Bala Ganesh as Chief Technology Officer – Business Wire

    Frontdoor Appoints Tech Visionary Dr. Bala Ganesh as New Chief Technology Officer

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Unveiling Nature’s Ultimate Survivors: Tardigrade Genomes Reveal the Secrets of Extreme Survival

February 12, 2024
in Science
Unveiling Nature’s Ultimate Survivors: Tardigrade Genomes Reveal the Secrets of Extreme Survival
Share on FacebookShare on Twitter

Tardigrade in Space

Recent research on tardigrades uncovers a complex genetic basis for their extreme resilience, challenging previous assumptions about their ecological adaptations and pointing to independent evolutionary events in their anhydrobiosis capability.

Tardigrades may be nature’s ultimate survivors. While these tiny, nearly translucent animals are easily overlooked, they represent a diverse group that has successfully colonized freshwater, marine, and terrestrial environments on every continent, including Antarctica.

Commonly known as “water bears”, these unusual creatures may be among the most resilient organisms on the planet thanks to their unparalleled ability to survive extreme conditions, with various species being resistant to drought, high doses of radiation, low oxygen environments, and both high and low temperatures and pressures.

While numerous genes have been suggested to contribute to this extremotolerance, a comprehensive understanding of the origins and history of these unique adaptations has remained elusive. In a new study published in Genome Biology and Evolution, scientists at Keio University Institute for Advanced Biosciences, the University of Oslo Natural History Museum, and the University of Bristol reveal a surprisingly intricate network of gene duplications and losses associated with tardigrade extremotolerance, highlighting the complex genetic landscape that drives modern tardigrade ecology.

Understanding Tardigrade Gene Families

As one form of extremotolerance, tardigrades can survive almost complete desiccation by entering a dormant state called anhydrobiosis (i.e., life without water), which allows them to reversibly halt their metabolism. Multiple tardigrade-specific gene families were previously found to be associated with anhydrobiosis.

Three of these gene families are referred to as cytosolic, mitochondrial, and secretory abundant heat soluble proteins (CAHS, MAHS, and SAHS, respectively) based on the cellular location in which the proteins are expressed. Some tardigrades appear to possess a variant pathway that involves two families of abundant heat-soluble proteins first identified in the tardigrade Echiniscus testudo and usually referred to as EtAHS alpha and beta.

Tardigrade and Phylogeny

A photograph of the tardigrade Ramazzottius varieornatus, in the center of a phylogeny of CAHS, the largest of the six desiccation-related protein families analyzed in this study. Credit: Kazuharu Arakawa, Keio Institute of Advanced Biosciences

Tardigrades also possess stress resistance genes that can be found in animals more broadly, such as the meiotic recombination 11 (MRE11) gene, which has been implicated in desiccation tolerance in other animals. Unfortunately, since the identification of these gene families, limited information has been available from most tardigrade lineages, making it difficult to draw conclusions on their origins, history, and ecological implications.

Investigating Tardigrade Evolution

To better shed light on the evolution of tardigrade extremotolerance, the authors of the new study—James Fleming, Davide Pisani, and Kazuharu Arakawa—identified sequences from these six gene families across 13 tardigrade genera, including representatives from both of the major tardigrade lineages, the Eutardigrades, and Heterotardigrades. Their analysis revealed 74 CAHS, 8 MAHS, 29 SAHS, 22 EtAHS alpha, 18 EtAHS beta, and 21 MRE11 sequences, allowing them to build the first tardigrade phylogenies for these gene families.

As resistance to desiccation is likely to have emerged as an adaptation to terrestrial environments, the authors assumed that they would find a link between gene duplications and losses in these gene families and habitat changes within tardigrades. “When we began the work, we expected to find that each clade would be clearly grouped around ancient duplications, with few independent losses. That would help us easily tie them to an understanding of modern habitats and ecology,” says the study’s lead author, James Fleming. “It’s an intuitive hypothesis,” he continues, “that the evolution of the duplications of these desiccation-related genes should, in theory, contain remnants of the ecological history of these organisms, although, in reality, this turned out to be overly simplistic.”

Instead, the authors were surprised by the sheer number of independent duplications of heat-soluble genes, which painted a much more complex picture of anhydrobiosis-related gene evolution. Notably, however, there was no clear link between strongly anhydrobiotic species and the number of anhydrobiosis-related genes a species possessed. “What we found was far more exciting,” says Fleming, “a complex network of independent gains and losses that does not necessarily correlate to modern terrestrial species ecologies.”

Independent Adaptations in Tardigrade Lineages

Despite the lack of a relationship between gene duplications and tardigrade ecology, the study did provide crucial insight into the major transitions that led to the acquisition of anhydrobiosis. The distinct distributions of gene families across the two major groups of tardigrades—CAHS, MAHS, and SAHS in the Eutardigrades and EtAHS alpha and beta in the Heterotardigrades—suggest that two independent transitions from marine to limno-terrestrial environments occurred within tardigrades, once in the Eutardigrade ancestor and once within the Heterotardigrades.

This research marks a significant step forward in our understanding of the evolution of anhydrobiosis in tardigrades. It also provides a foundation for future studies into tardigrade extremotolerance, which will require the continued development of genomic resources from more diverse tardigrade lineages.

“We, unfortunately, have no representatives from several important families, such as the Isohypsibiidae, and this does limit how firmly we can stand by our conclusions,” notes Fleming. “With more freshwater and marine tardigrade samples, we will be better able to appreciate the adaptations of terrestrial members of the group.” Unfortunately, some tardigrades can be especially elusive, presenting a major obstacle to such studies. As an example, Tanarctus bubulubus, one of Fleming’s favorite tardigrades, is too small to see with the naked eye and is found only in sediment in the North Atlantic at depths of around 150 m. “Hopefully,” says Fleming, “large-scale sequencing initiatives through the Earth Biogenome Project will steadily bridge this gap in our understanding, and it’s an effort I’m excited to see continue.”

Reference: “The Evolution of Temperature and Desiccation-Related Protein Families in Tardigrada Reveals a Complex Acquisition of Extremotolerance” by James F Fleming, Davide Pisani and Kazuharu Arakawa, 29 November 2023, Genome Biology and Evolution.
DOI: 10.1093/gbe/evad217

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/unveiling-natures-ultimate-survivors-tardigrade-genomes-reveal-the-secrets-of-extreme-survival/

Tags: Nature'sscienceUnveiling
Previous Post

Contractor Fined After Worker Dies of Heat Illness in Alabama

Next Post

370 Million Tons – Landmark Study Uncovers New Source of Carbon Emissions

‘Half the tree of life’: ecologists’ horror as nature reserves are emptied of insects – The Guardian

Half the Tree of Life at Risk: Ecologists Warn as Insect Populations Plummet in Nature Reserves

June 29, 2025
Health, science cuts affect future jobs – The Acorn

Health, science cuts affect future jobs – The Acorn

June 29, 2025
Why Some People Have Absolutely No Sense Of Direction, According To Science – YourTango

Why Do Some People Struggle with Direction? The Surprising Science of Getting Lost

June 29, 2025
Cardiologist shares how stress and modern lifestyle are raising heart risks in 30s and 40s: ‘Don’t wait for chest pain’ | Health – Hindustan Times – Hindustan Times

Cardiologist shares how stress and modern lifestyle are raising heart risks in 30s and 40s: ‘Don’t wait for chest pain’ | Health – Hindustan Times – Hindustan Times

June 29, 2025
79-year old man competing in his 16th World Police and Fire Games – WVTM

79-year old man competing in his 16th World Police and Fire Games – WVTM

June 29, 2025
The Economy Is So Off the Rails That They’re Trying to Figure Out How to Make Ads Specifically Targeted at AI Bots – Futurism

The Economy Is So Off the Rails That They’re Trying to Figure Out How to Make Ads Specifically Targeted at AI Bots – Futurism

June 29, 2025

WATCH: Health Secretary RFK Jr. Faces Intense Questioning on Vaccine Policy and Transparency in House Hearing

June 29, 2025
Jimmy Patronis hails House passage of bill benefitting military, veterans – Florida Politics

Jimmy Patronis Cheers House Approval of Landmark Bill Backing Military and Veterans

June 29, 2025
Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

June 29, 2025
Fireworks sales support Folsom youth sports: ‘This is our biggest fundraiser’ – Sacramento Bee

Fireworks Sales Ignite Support for Folsom Youth Sports: “This Is Our Biggest Fundraiser

June 29, 2025

Categories

Archives

June 2025
MTWTFSS
 1
2345678
9101112131415
16171819202122
23242526272829
30 
« May    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (700)
  • Economy (723)
  • Entertainment (21,613)
  • General (15,619)
  • Health (9,762)
  • Lifestyle (728)
  • News (22,149)
  • People (724)
  • Politics (729)
  • Science (15,940)
  • Sports (21,219)
  • Technology (15,707)
  • World (703)

Recent News

‘Half the tree of life’: ecologists’ horror as nature reserves are emptied of insects – The Guardian

Half the Tree of Life at Risk: Ecologists Warn as Insect Populations Plummet in Nature Reserves

June 29, 2025
Health, science cuts affect future jobs – The Acorn

Health, science cuts affect future jobs – The Acorn

June 29, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version