Keywords:Amino acid, light environment, Nostoc sp. HK-01, Space Agriculture
Habitation in extraterrestrial environments such as on Mars is one of our challenges. We have been studying future space agriculture to provide food and oxygen for habitated areas in extraterrestrial environments. A cyanobacterrium, Nostoc sp. HK-01, is highly tolerant to extraterrestrial environments. We have already confirmed that Nostoc sp. HK-01 was able to grow for long time on Martian regolith simulant in a laboratory experiment. We have already reported that Nostoc sp. HK-01 produces a high level of amino acids but the amount of each amino acid has not yet been analyzed under harsh environments. Here, we investigated the relationship between the amount of amino acid and the intensity of light in Nostoc sp. HK-01 for future extraterrestrial agricultural purposes.