It can explain the origin of life
Biologists first captured and raised elusive type of bacteria similar to the one that could create complex life on our planet, reports the Chronicle.info with reference to Wave.
These ancient microorganisms known as archaea, were initially considered part of the domain (the largest structure in the classification of living organisms) bacteria and were called archaebacteria.
However, these organisms were so different in its structure from all the others, that scientists have identified them in a separate domain. Until now, most of the archaea were identified only by analysis of the DNA samples and was never received in the laboratory.
To isolate these microorganisms are Japanese scientists who published a Preprint of his article on the website bioRxiv.org. It took them 12 years to do it. The researchers collected samples of mud from deep-sea hydrothermal field called the Castle of Loki, which is located in the North Atlantic. In the samples, scientists found fragments of genetic code from different bacteria.
Due to the long and hard work, researchers were able to isolate from this “hash” genes are one of the types of archaea, which the scientists call Lokiarchaeota — named places where they were discovered. Soon, other laboratories found other luciolinae archaea, and together they formed a line called “Asgardian Archean”, named after the mythological region inhabited by Norwegian gods. Now scientists in the world were able to bring ancient organisms in the laboratory to explore them in more detail.
For the cultivation of microbes from deep-sea sediments, the engineers built a bioreactor that simulates the conditions of deep-sea hydrothermal fields with high methane concentrations, and there they put collected as part of the archaea. Within five years the researchers waited until the slow-growing microbes multiply in the reactor. Then they took samples and placed them along with nutrients in glass vials that stood for another year before submitting signs of life. Genetic analysis revealed a barely noticeable population Lokiarchaeota. But it was a great success for the scientists, given the whimsical of these organisms.
Although the exact place of organisms in the Tree of Life remains controversial, many analyses combine archaea and eukaryotes together. This may mean that some distant ancestor of “asgarda” gave rise to all eukaryotes — everything from pandas to Portobello mushrooms.