Unexpected bacterial cell activity provides insights about life in extreme states on Earth and maybe on other worlds. Some bacteria go into a dormant state where their life processes cease when they face starvation and stressful conditions. These cells, known as spores, can resist punishing extreme
The study revealed how bacteria calculate their return back to life.
When the right circumstances arise, spores that may have been dormant for years may eventually awaken and spring back to life within minutes. . Researchers from the School of Biological Sciences revealed that spores had an extraordinary ability to evaluate their surroundings despite remaining physiologically dead. They discovered that spores employ stored electrochemical energy to detect if conditions are suitable for a return to normal functioning life, much like a capacitor.
Many bacterial species form spores—partially dehydrated cells surrounded by a resilient protective coat—as a survival strategy that allows them to remain dormant for thousands of years. Such a remarkable capability makes them a threat in the form of bacterialSüel and his colleagues tested whether dormantspores could sense short-lived environmental signals that were not strong enough to trigger a return to life.
Custom artwork illustrates an abacus made from bacterial cells known as spores used to count stimuli. Credit: Anne Hashimoto
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