![\"Experimental](\"https:\/\/www.newsbeep.com\/il\/wp-content\/uploads\/2026\/02\/experimental-design-to-evaluate-microgravity-interactions-on-the-iss-1200x727.jpg\")
Experimental design to evaluate microgravity interactions on the ISS \u2013 \u00a9 PLOS One<\/p>\n
In microgravity, the infection process was notably slower. The phages took longer to bind and penetrate their bacterial targets, a delay not seen in terrestrial samples. Despite this, the viruses evolved new mutations that enhanced their ability to attach to receptors on the bacterial cell surface. <\/p>\n
Meanwhile, the bacteria didn\u2019t stand still: they developed specific mutations that offered protection against phages under space conditions. \u201cSpace fundamentally changes how phages and bacteria interact,\u201d the study authors noted<\/a>. \u201cInfection is slowed, and both organisms evolve along a different trajectory than they do on Earth.\u201d<\/p>\n Microgravity Accelerates Unique Mutations<\/p>\n To understand these shifts, the team used whole-genome sequencing and deep mutational scanning to track genetic changes in real time. The results showed clear evidence of distinct evolutionary pressures in space. The phages, while slower in attack, acquired advantageous mutations, particularly in the receptor-binding protein, a key component that determines how effectively a virus can latch onto a host cell.<\/p>\n The implications are significant. According to the study<\/a>, these receptor changes later proved effective against E. coli strains that cause urinary tract infections, suggesting that phages adapted in space could have real-world applications back on Earth. This idea builds on prior experiments involving mutation studies in space, such as when the International Atomic Energy Agency sent seeds to the ISS in 2022 to accelerate beneficial genetic variations for agriculture.<\/p>\n Phages as Future Frontline Defense<\/p>\n Bacteriophages have long been proposed as a potential answer to antimicrobial resistance<\/a>, but their interaction with bacteria in varied environments remains under-explored. The new findings from this ISS-based study could help fill that gap. As stated by the researchers, \u201cPhages act as major drivers of bacterial diversity and evolutionary change in their bacterial prey.\u201d While extensive research has focused on Earth-bound phage-bacteria dynamics, this study highlights the importance of testing those interactions in other environments.<\/p>\n![\"Bacteriophage](\"https:\/\/www.newsbeep.com\/il\/wp-content\/uploads\/2026\/02\/bacteriophage-t7-growth-is-inhibited-by-microgravity-1200x727.jpg\")
\u00a0Bacteriophage T7 growth is inhibited by microgravity \u2013 \u00a9 PLOS One<\/p>\n