Lichen-Mediated Self-Growing Construction Materials for Habitat Outfitting on Mars
As its next step in space exploration, the National Aeronautics and Space Administration (NASA) revealed plans to establish a permanent human presence on Mars. Habitat outfitting, i.e., the technology to provide the crew with the necessary equipment to perform mission tasks as well as a comfortable, safe, and livable habitable volume, has not been fully explored yet. This study proposes that, rather than shipping prefabricated outfitting elements to Mars, habitat outfitting can be realized by in-situ construction using cyanobacteria and fungi as building agents. A synthetic lichen system, composed of diazotrophic cyanobacteria and filamentous fungi, can be created to produce abundant biominerals (CaCO3) and biopolymers, which will glue Martian regolith into consolidated building blocks. These self-growing building blocks can be assembled into various structures, such as floors, walls, partitions, and furniture.
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