Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Diversity of Archaea III01:27

Diversity of Archaea III

82
Crenarchaeota, a prominent phylum of Archaea, is remarkable for its ability to thrive in extreme environments characterized by high temperatures and acidity. These microorganisms inhabit sulfuric hot springs, volcanic systems, and submarine hydrothermal vents, where temperatures often exceed 100°C. The unique adaptations of Crenarchaeota not only allow survival under such extreme conditions but also provide insights into the mechanisms of life in primordial Earth-like...
82
Green Algae01:21

Green Algae

229
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
229
Diversity of Archaea IV01:29

Diversity of Archaea IV

115
Hyperthermophilic archaea are a group of extremophiles thriving at temperatures above 80°C, often in hydrothermal vents and volcanic soils where conditions surpass the boiling point of water. At such temperatures, proteins, membranes, and DNA in most organisms degrade, but hyperthermophiles have evolved remarkable adaptations to maintain stability and function.Unique Cellular FeaturesHyperthermophilic membranes are composed of a monolayer of biphytanyl tetraether lipids, which resist...
115
Conditions on Early Earth02:06

Conditions on Early Earth

97.0K
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
97.0K
Diversity of Archaea II01:24

Diversity of Archaea II

105
Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
105
Environmental Applications of Microorganisms01:30

Environmental Applications of Microorganisms

302
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
302

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Smart sensing the spectrum: cutting-edge biosensor and biomarker approaches for early autism detection.

Metabolic brain disease·2026
Same author

Pick Your Poison: Tetrodotoxin Variants Give Pacific Newts a Potential Leg Up in the Coevolutionary Arms Race with Resistant Garter Snake Predators.

bioRxiv : the preprint server for biology·2026
Same author

Impact of a Single Hemodialysis Session on Oxidative Stress-Inducing and Oxidative Damage Biomarkers in End-Stage Kidney Disease Patients.

Current issues in molecular biology·2026
Same author

Cutaneous tuberculosis with features suggestive of scrofuloderma masquerading as hidradenitis suppurativa: a case report.

Therapeutic advances in infectious disease·2026
Same author

Haematohidrosis in a Young Boy Temporally Associated With Psychological Stress: A Case Report.

Clinical medicine insights. Case reports·2026
Same author

Handing Over the Wheel to the Residents: Navigating Autonomy and Patient Safety.

Indian pediatrics·2026

Related Experiment Video

Updated: Sep 19, 2025

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

3.7K

UVC-Intense Exoplanets May Not Be Uninhabitable: Evidence from a Desert Lichen.

Tejinder Singh1, Christos D Georgiou2, Christopher S Jeffrey3

  • 1Desert Research Institute, Las Vegas, Nevada, USA.

Astrobiology
|June 16, 2025
PubMed
Summary

Desert lichens show remarkable resilience to intense ultraviolet C (UVC) radiation, suggesting exoplanets orbiting M and F stars may still support life. This study demonstrates the protective role of lichen cortex against UVC, challenging assumptions about habitability.

Keywords:
ExoplanetLichenUVC tolerance

More Related Videos

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.1K
Simulation of Early Earth Hydrothermal Chimneys in a Thermal Gradient Environment
06:29

Simulation of Early Earth Hydrothermal Chimneys in a Thermal Gradient Environment

Published on: February 27, 2021

3.6K

Related Experiment Videos

Last Updated: Sep 19, 2025

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

3.7K
Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
13:38

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

8.1K
Simulation of Early Earth Hydrothermal Chimneys in a Thermal Gradient Environment
06:29

Simulation of Early Earth Hydrothermal Chimneys in a Thermal Gradient Environment

Published on: February 27, 2021

3.6K

Area of Science:

  • Astrobiology
  • Plant Science
  • Radiation Biology

Background:

  • Earth-like exoplanets are often found orbiting M and F stars.
  • These stars emit intense ultraviolet C (UVC) radiation, particularly during flares.
  • The habitability of exoplanets under such conditions is a significant question.

Purpose of the Study:

  • To investigate the UVC tolerance of the desert lichen *Clavascidium lacinulatum*.
  • To assess the potential habitability of UVC-intense exoplanets for photosynthetic organisms.
  • To understand the protective mechanisms employed by lichens against high UVC levels.

Main Methods:

  • Irradiating *Clavascidium lacinulatum* with 254-nm UVC (55 W/m²) continuously for 3 months.
  • Comparing the UVC resistance of lichen photobiont cells with those in pure culture and *Deinococcus radiodurans*.
  • Analyzing the lichen cortex for protective compounds and mechanisms.

Main Results:

  • Only 50% of the lichen's algal photobiont cells were inactivated after 3 months of UVC exposure.
  • Photobiont cells in pure culture and *Deinococcus radiodurans* were inactivated within 60 seconds under identical conditions.
  • Phenolic secondary metabolites in the lichen cortex rendered it UVC-opaque, providing significant protection.

Conclusions:

  • Lichens possess robust protective mechanisms against intense UVC radiation.
  • The cortex of *Clavascidium lacinulatum* effectively shields its internal cells from UVC damage.
  • Photosynthetic organisms could potentially inhabit exoplanets with high UVC levels, contrary to previous assumptions.