In a recent study, Japanese scientists discovered a resilient type of moss, Physcomitrium patens, that exhibited remarkable survival capabilities in the harsh space environment. The moss was sent to the International Space Station (ISS) and exposed to the extreme conditions of space for nine months.
The researchers examined three different stages of the moss: juvenile moss, brood cells, and sporophytes. While not all stages survived, the sporophytes demonstrated the highest survival rate at 80%, with the brood cells also showing resilience to freezing temperatures for 30 days.
Lead researcher Tomomichi Fujita from Hokkaido University highlighted that the moss was able to endure a nine-month exposure in space without growth. Upon return to Earth, approximately 90% of the spores successfully germinated and grew in a laboratory setting.
The study contributes to ongoing research on plant survivability in space, especially concerning the potential for cultivating plants for sustenance during future space missions to the moon and Mars. Plants not only offer nutritional benefits but also play a crucial role in maintaining astronauts’ mental well-being in isolated space environments. This research paves the way for the development of ecosystems beyond Earth and underscores the importance of understanding plant adaptation in extreme conditions.