December 3, 2022

ambiguity in the multicellular behavior of bacteria; You understand

In the latest research, Japanese scientists have found a bacterium, discovered in a limestone wall of a cave, that has a behavior multicellulari.e. one life cycle has two phases (one liquid and one solid).

HS-3’s call bacteria It has been isolated and its colony matures into a semi-closed ball containing clusters of cocobacillus, which are released upon contact with water. Learn more about it in this article.

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There is still much to be discovered about the emergence of multicellularity.

Darwinian theories still hold strong importance when it comes to single-celled organisms.

Researchers found HS-3 in dripping water from a cave located on the island of Kyushu, Japan, in 2008. In this research, they were initially looking for bacteria that accumulated lipids, but the colony highlighted on the agar plates was that of HS-3 . To analyze the growth of the colony, microscopy was used, hence the proliferation and formation of a single layer, oriented like a liquid crystal, was remarkable.

The buildup at the edge of the colony gives HS-3 the unique ability to maintain this two-dimensional liquid arrangement for a longer period of time due to the lower pressure. Scientists believe that this is one of the properties that allows multicellularity. The transparency of the colonies can be explained by their formation, in which the filamentous cells form a spiral.

After 2 days, the colony began to swell three-dimensionally, forming a semi-enclosed sphere with cocobacillus internally. After the fifth day, these endophytes proliferated, resulting in a multicellular takeover.

By putting water into the balls, the scientists observed the release kokobaseli internal organs and rupture of the filamentous cell part. By coating the edited cells onto another agar plate, they found that they were able to reproduce the original filamentous structure. In other words, there were two distinct stages of the life cycle.

Now, 10 years later, it was possible to confirm these observations of morphological changes in cells and colonies that occurred in a controlled and reversible manner, thus confirming multicellularity.

The discovery surprised the researchers with several properties that HS-3 encompasses, such as multicellular behavior that had not been documented until then.