Microbial intelligencedefine intelligence, microbial intelligence
Microbial intelligence popularly known as bacterial intelligence is the intelligence shown by microorganisms The concept encompasses complex adaptive behaviour shown by single cells, and altruistic and/or cooperative behavior in populations of like or unlike cells mediated by chemical signalling that induces physiological or behavioral changes in cells and influences colony structures
Complex cells, like protozoa or algae, show remarkable abilities to organise themselves in changing circumstances Shell-building by amoebae reveals complex discrimination and manipulative skills that are ordinarily thought to occur only in multicellular organisms
Even bacteria, which show primitive behavior as isolated cells, can display more sophisticated behavior as a population These behaviors occur in single species populations, or mixed species populations Examples are colonies of myxobacteria, quorum sensing, and biofilms
It has been suggested that a bacterial colony loosely mimics a biological neural network The bacteria can take inputs in form of chemical signals, process them and then produce output chemicals to signal other bacteria in the colony
The mechanisms that enable single celled organisms to coordinate in populations presumably carried over in those lines that evolved multicellularity, and were co-opted as mechanisms to coordinate multicellular organisms
Bacteria communication and self-organization in the context of network theory has been investigated by Eshel Ben-Jacob research group at Tel Aviv University which developed a fractal model of bacterial colony and identified linguistic and social patterns in colony lifecycle also see Ben-Jacob's bacteria
- 1 Examples of microbial intelligence
- 11 Bacterial colony optimization
- 2 See also
- 3 References
- 4 Further reading
- 5 External links
Examples of microbial intelligence
- The formation of biofilms requires joint decision by the whole colony
- Under nutritional stress bacterial colonies can organise themselves in such a way so as to maximise nutrient availability
- Bacteria reorganise themselves under antibiotic stress
- Bacteria can swap genes such as genes coding antibiotic resistance between members of mixed species colonies
- Individual cells of myxobacteria and cellular slime moulds coordinate to produce complex structures or move as multicellular entities
- Populations of bacteria use quorum sensing to judge their own densities and change their behaviors accordingly This occurs in the formation of biofilms, infectious disease processes, and the light organs of bobtail squid
- For any bacterium to enter a host's cell, the cell must display receptors to which bacteria can adhere and be able to enter the cell Some strains of E coli are able to internalize themselves into a host's cell even without the presence of specific receptors as they bring their own receptor to which they then attach and enter the cell
- Under rough circumstances, some bacteria transform into endospores to resist heat and dehydration
- A huge array of microorganisms have the ability to overcome being recognized by the immune system as they change their surface antigens so that any defense mechanisms directed against previously present antigens are now useless with the newly expressed ones
Bacterial colony optimization
The algorithm is based on a lifecycle model that simulates some typical behaviors of E coli bacteria during their whole lifecycle, including chemotaxis, communication, elimination, reproduction, and migration
- Collective intelligence
- Genetic engineering
- Microbial cooperation
- Swarm intelligence
- Synthetic biology
- Social IQ score of bacteria
- Multi-agent system
- ^ Ford, Brian J 2004 "Are Cells Ingenious" PDF Microscope 52 3/4: 135–144
- ^ Cohen, Inon; et al 1999 "Continuous and discrete models of cooperation in complex bacterial colonies" PDF Fractals 703 1999:: 235–247
- ^ Niu, Ben 2012 "Bacterial colony optimization" Discrete Dynamics in Nature and Society 2012 Article ID 698057
- Eshel Ben-Jacob 1998 "Bacterial wisdom, Godel's theorem and creative genomic webs"
- Brian J Ford 2004 "Are cells ingenious" PDF
- Eshel Ben-Jacob, I Becker, Y Shapira 2004 "Bacterial Linguistic Communication and Social Intelligence" CS1 maint: Multiple names: authors list link
- Brian J Ford 2006 "Revealing the ingenuity of the living cell" PDF
- Anthea Lipsett 2006 "Not so clever, are you"
- Brian J Ford 2010 "Secret Intelligence of the Living Cell" PDF
- BT ponders bacterial intelligence
- Eshel Ben-Jacob's Homepage
- Realizing Social Intelligence of Bacteria
- Intelligent Bacteria
- Microbial Intelligence Blog
- Making a conscious decision making computer out of bacteria to overcome limitations of Turing theorem
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