Syntrichia caninervis, a desert moss found in the Mojave desert and Antarctica, has been identified as a potential pioneer plant for colonizing Mars due to its exceptional ability to withstand harsh conditions, according to a recently published study.
The study is the first to examine the survival of whole plants, rather than microorganisms or spores, in simulated Martian environments, focusing on growing plants directly on the planet's surface.
Researchers found that S. caninervis is more environmentally resilient than some highly stress-tolerant microorganisms and tardigrades, making it a potential pioneer plant for colonizing extraterrestrial environments and laying the foundation for biologically sustainable human habitats beyond Earth.
The moss regenerated and grew after being frozen, dehydrated, and exposed to gamma rays, demonstrating its resilience and potential as a pioneer plant for Mars colonization. It demonstrated the ability to survive and even show growth promotion after exposure to gamma radiation doses that would kill most plants, making it among the most radiation-tolerant organisms known.
Prior dehydration helps the plants cope with extreme conditions, and plants rebounded more quickly compared to non-dehydrated ones when stored at extremely low temperatures for several years and then defrosted.
Testing under simulated Martian conditions showed that dried S. caninervis plants achieved a 100% regeneration rate within 30 days, while hydrated plants also survived but regenerated more slowly, indicating the potential of this moss as a pioneer plant for growth on Mars.
Terrestrial plants like S. caninervis are vital for long-term space missions as they can convert carbon dioxide and water into oxygen and carbohydrates, potentially enriching the rocky material on Mars for other plants to grow and contributing to oxygen production and soil fertility.
Sources: The Guardian, Newsweek , Science Times, Conservative Angle, EurekAlert!, Mirage News, The National
This article was written in collaboration with Generative AI news company Alchemiq.
