7. Deinococcus radiodurans (Conan the Bacterium)
Deinococcus radiodurans, often referred to as “Conan the Bacterium,” is renowned for its extraordinary resistance to ionizing radiation, capable of surviving doses up to 5,000 grays (Gy) with minimal loss of viability. (en.wikipedia.org) This remarkable resilience is attributed to its efficient DNA repair mechanisms, which enable it to mend extensive DNA damage, including double-strand breaks, within 12-24 hours without introducing mutations. (pubmed.ncbi.nlm.nih.gov) Additionally, the bacterium’s genome is organized into tightly packed structures, facilitating the repair process. (en.wikipedia.org) For more detailed information, refer to the article “The World’s Toughest Bacterium” in Scientific American. (nature.com)