This is a known phenomenon, from many years ago, between the microbiologists of fermentative processes. When the volume of inocule is not adequate for the culture medium, bacteria don’t reproduce. Although bacteria don’t need other bacteria for reproduction the phenomenon is known by microbiologist who say in humorous tone that bacteria die of loneliness.

This pragmatic knowledge has been baptized recently as "Quorum sensing" and is based on the discovery of the use of biochemical mechanisms of communication between close bacteria with the use of biosignaling. These substances inform the close (not together) bacteria about the options of actuation of the bacterial population, so it is no an order of one single bacteria but the consents of the whole population.

Currently there are two known structures for biosignaling: the peptidic structures and the acilhomoserine lactone (AHL).

It is sensed that this biosignaling are able to transport informations of different types, but the following had been defined:

1) use of biosignaling to start with an infection.

2) use of biosignaling to start secretion of biocines (bacterial antibiotic against bacteria)

3) use of biosignaling for liberation of CO2 in oceans.

4) use of biosignaling for emission of luminic signals (blue is the most usual) by bacteria.

This leads us to the communication between cells, that are not physically joined, not only the communication between bacteria. The door to the study is also opened for the communication between cells of different species if the same kingdom (vegetal-vegetal, animal-animal) or the communication between cells of different kingdoms (vegetal-animal)

The implications of these works are incalculable, because can help to clarify mechanisms related to infection pathogen, synthesis of substances of biotechnological use,

and since we are highlighting in other blogs of disclosure, there is the possibility of a folded genetic code waiting to be unfolded after an auto message, there is also the possibility that this skill of modern evoluted cells as neurones, enterocytes, lymphocytes and epithelial cells to communicate with other was an heritage. All them have the ability to relate with the outer, learn and react.