Investigating The Microorganisms Which Were Isolated From The Samples From Mars

963 Words Oct 8th, 2016 4 Pages
A total of four microorganisms were isolated from the sample brought back from Mars. To identify the microorganisms which were isolated from the sample brought back from Mars, an rDNA sequence analysis was required. Every sequence had an S_ab score of 1.000 meaning the sequence is identical to the microorganism that it was matched to. Before gathering phenotypic results, we gathered phylogenetic data for the four microorganisms which includes Micrococcus luteus, Citrobacter freundii, Hafnia alvei, and Staphylococcus epidermidis. Micrococcus luteus is a gram positive, coccus shaped microorganism that is nonmotile and unable to grow on glucose minimal media or simmons citrate agar (Kocur, 1972;). Citrobacter freundii is a gram negative, bacillus shaped microorganism that is motile and able to grow on both glucose minimal media and simmons citrate agar (Dworkin, 2006; Lodish et al., 2000). Hania alvei is a gram negative, bacillus shaped microorganism that is motile and able to grow on both glucose minimal media and simmons citrate agar (Brenner, 2005; Janda & Sharon, 2006). Lastly, Staphylococcus epidermidis is a gram positive, coccus shaped microorganism that is nonmotile and able to grow on glucose minimal media but not simmons citrate agar (NIH, 2014; Vos et al. 2011).

After collecting the phylogenetic data, we began collecting phenotypic data in lab to determine if the isolated microorganisms are a match to already known terrestrial microorganisms. The first phenotypic…

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