Insights into the Survival Capabilities of Cryomyces antarcticus Hydrated Colonies after Exposure to Fe Particle Radiation

The modern concept of the evolution Mars assumes that life could potentially have originated on planet Mars, possibly during end late heavy bombardment, and then be transferred to other planets. Since then, physical chemical conditions changed now strongly limit presence terrestrial-like forms. These adverse include scarcity liquid water (although brine solutions may exist), low temperature atmospheric pressure, cosmic radiation. Ionizing radiation is very important among these life-constraining factors because it damages DNA cellular components, particularly in where radiation-induced reactive oxidants diffuse freely. Here, we investigated impact high doses (up 2 kGy) densely-ionizing (197.6 keV/µm), space-relevant iron ions (corresponding irradiation reach uppermost layer subsurface) survival an extremophilic terrestrial organism—Cryomyces antarcticus—in medium under conditions, through different techniques. Results showed survived a metabolically active state when subjected Fe was able repair eventual damages. It implies some forms can withstand prolonged exposure ion