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Bacteria manipulate salt to build shelters to hibernate
Date:7/25/2014

front cover of this month's 'Astrobiology' edition.

"The most interesting result is that the bacteria enter a state of hibernation inside these desiccated patterns, but they can later be 'revived' simply by rehydration," said Gmez, who highlighted a very important result from an astrobiological point of view: "Given the richness and complexity of these formations, they may be used as biosignatures in the search for life in extremely dry environments outside our own planet, such as the surface of Mars or that of Jupiter's satellite, Europa".

In fact, the LBMARS laboratory participates in the development of the Raman RLS instrument of the ExoMars rover, the mission that the European Space Agency (ESA) will send to the red planet in 2018, and this new finding may help them search for possible biological signs. According to the researcher, "the patterns observed will help calibrate the instrument and test its detection of signs of hibernation or traces of Martian life".

"The challenge we now face is to understand how the bacteria control the crystallisation of NaCl to create these incredible 3D structures and vice-versa, how salt influences this action, as well as studying the structure of these microorganisms that withstand desiccation," said Gmez, who reminds us that a simple curiosity and excitement about science, although it may be with simple means, still allows us to make some interesting discoveries: "This is a tribute to scientists such as the Spaniard Santiago Ramn y Cajal and the Dutch scientist Anton van Leeuwenhoek, who also worked from home with their own microscopes".


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Source:Eurekalert  

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