The microbes found in the ocean's crust rely on recycling to survive


According to a new study, extreme and remote conditions are not a hindrance to the microbial community, as some of them live on the seabed in the seabed and rely on processing for survival.

Detailed look at the rocks. Credit Woods Oceanographic Institute

Researchers have found bacteria, fungi and archaea (single-celled organisms) in the rocks about 700 meters below the Indian Ocean. This discovery was made possible by exploring the Atlantic Bank, part of the seabed, rock samples.

Researchers at the Wood Hall Oceanographic Institute said microbial communities lived in rock crevices and crevices. The rock samples had biosynthetic information such as DNA and lipid biomarkers, and messenger RNA extracts showed that some cells were still active.

The fact that sea life is not new to seabirds, but only one study in 2010, found the oceanic crust of the Atlantic Ocean, showing signs of life. The oceanic crust comprises almost 70% of the Earth's surface and consists mainly of a gabbroic layer. Gabro is an intrusive flammable rock.

"this [communities] It could be hanging in a very quiet state for millions of years, ”said study author and associate scientist Virginia Edgomb. "I'm sure that even the active microbes run at a much slower rate than near the surface, but they nevertheless interfere."

The study said that the survival of bacteria, fungi and archaea relied on underground fluid drainage. Sea water travels through rocky crevices and carries organic matter from the ocean. Researchers have found signs of life in these currents of seawater.

At the same time, research has found a number of survival strategies used by microorganisms. Some showed carbon dioxide to be stored in cells, some were able to process nitrogen and sulfur to generate energy, process amino acids and produce vitamins.

Steven D'Hondt, a professor at the University of Rhode Island who was not involved in the study, told EOS that it "contradicts standard assumptions about the subterranean bark life" and that "this community's readiness to consume organic matter." It is metabolically linked to the wider world. ”

Whether the results can be applied to other areas of the lower crust of the ocean is still an open question. The study focused on Atlantis Bank, where the lower crust is exposed to the seabed, an unusual phenomenon. Future research should confirm whether life in the upper crust and lower sediments is still intact.

The study was published in the journal Nature.