Navigation Links
Bacteria provide new insights into human decision making
Date:12/11/2009

at UCSD.

In nature, bacteria live in large colonies whose numbers may reach up to 100 times the number of people on earth. Many bacteria respond to extreme stresssuch as starvation, poisoning and irradiationby creating spores, dormant states that are highly resistant to the outside environment and that can germinate into fully functioning bacteria once the environment improves. The response involves more than 500 genes and takes about 10 hours in Bacillus subtilis, the bacterium used by the scientists in their study.

Each bacterium in the colony communicates via chemical messages and performs a sophisticated decision making process using a specialized network of genes and proteins. Modeling this complex interplay of genes and proteins by the bacteria enabled the scientists to assess the pros and cons of different choices in game theory, a branch of mathematics that attempts to model decision making by humans, in which an individual's success in making choices depends on the choices of others.

When bacteria form spores, the mother cell dies, but not before it stores a copy of its DNA in a special capsule called the spore. The mother cell then breaks open and its DNA and remaining proteins are released to the environment. The bacteria on the road to spore formation don't always form spores. They can change their fate and escape into a different state called "competence."

In this state, the bacteria change their membranes to allow the easy absorption of material from the dying cells. This allows for the creation of a "competence intermediate state," in which the bacteria hope to survive even under these unfriendly conditions. When normal conditions are restored, bacteria return to normal life without having to make a spore. The advantage of this situation is the ability of quickly returning to normality, but there is also a disadvantage: Likely death if the conditions get even worse. As a result, each bacterium has a dilemm
'/>"/>

Contact: Kim McDonald
kmcdonald@ucsd.edu
858-534-7572
University of California - San Diego
Source:Eurekalert

Page: 1 2 3 4 5

Related biology news :

1. UCLA researchers engineer bacteria to turn carbon dioxide into liquid fuel
2. Self-destructing bacteria improve renewable biofuel production
3. Researchers demonstrate nanoscale X-ray imaging of bacterial cells
4. Bacterial gut symbionts are tightly linked with the evolution of herbivory in ants
5. Scientists gain new understanding of disease-causing bacteria
6. Researchers discover biological basis of bacterial immune system
7. Researchers establish common seasonal pattern among bacterial communities in Arctic rivers
8. Factors from common human bacteria may trigger multiple sclerosis
9. Biologists discover bacterial defense mechanism against aggressive oxygen
10. Like humans, ants use bacteria to make their gardens grow
11. Texas A&M Researchers Examine How Viruses Destroy Bacteria
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/30/2014)... at the University of California, San Diego, have completed ... using a method that uses the pixels in an ... known as mesh-free simulation. , The researchers, led by ... at the Jacobs School of Engineering at UC San ... method at the CompIMAGE,14 conference in Pittsburgh this month. ...
(Date:9/30/2014)... September 30, 2014--Sea monkeys have captured the popular attention ... easily observable life cycle -- sold as dehydrated eggs, ... given little more than a tank of salt water. ... pattern: Like other zooplankton, brine shrimp vertically migrate in ... closer to the surface at night and retreating deeper ...
(Date:9/30/2014)... (PCE) in drinking water may increase the risk ... new study led by a Boston University School ... in the journal Environmental Health , compared ... 1,766 women in Cape Cod, Ma., where water ... early 1980s by the installation of vinyl-lined asbestos ...
Breaking Biology News(10 mins):First comprehensive meshfree numerical simulation of skeletal muscle tissue achieved 2Laser-guided sea monkeys show how zooplankton migrations may affect global ocean currents 2Contaminated water linked to pregnancy complications, BU study finds 2
... - Eurofins MWG Operon, a leader in next ... services with the Ion Proton Next Generation Sequencer. ... was also awarded after joining Life Technologies Corporation,s ... Membership in Life Technologies, CSP program is exclusive ...
... This 2014 FASEB Science Research Conference focuses on ... transduction cascades, lipid mediators, and lipid targets that ... initiation and progression of human cancers. ... scientists and scientists from industry for presentations, discussion, ...
... world,s cartilaginous fish, namely sharks and rays, face extinction ... study to systematically and globally assess their fate. ... Specialist Group (SSG), co-chaired by Nick Dulvy, a Simon ... and Conservation in British Columbia, conducted the study. ...
Cached Biology News:Study says sharks/rays globally overfished 2
(Date:10/2/2014)... , 2 de octubre de 2014 Laborie ... Toronto, Ontario , ha completado la adquisición de ... Inc. Unisensor tiene su sede central sita en Wiesendangen, ... en Portsmouth, New Hampshire . Unisensor ... micro de alta resolución para evaluar la presión y ...
(Date:10/2/2014)... MUMBAI, India , October 2, 2014 ... (CRO) showcased its biometrics capabilities at the prestigious Annual ... 2014 in Las Vegas , where ... experts presented on varied topics like ,data analytics to ... stage / registry studies, and ,benefits of working together ...
(Date:10/1/2014)... , Oct. 1, 2014  Pressure BioSciences, Inc. ... in the development and sale of high pressure-based sample ... announced it has been invited to present at the ... Warsaw , Poland.  The Conference will take ... 2014.  Mr. Richard T. Schumacher , President and ...
(Date:10/1/2014)... As the world takes its first steps into the ... century would mark the beginning of a new era of ... fact that the world is experiencing a rapid rise in ... Almost half of these chronic conditions are due to lifestyle ... care and intervention. While the world is experiencing a rapid ...
Breaking Biology Technology:LABORIE adquiere Unisensor AG y Unisensor USA, Inc. 2SIRO Clinpharm Showcases Biometrics Capabilities at the SCDM 2014 Annual Conference in Las Vegas 2Pressure BioSciences, Inc. Invited to Present at the 2nd Global Life Sciences Conference in Warsaw, Poland 2Pressure BioSciences, Inc. Invited to Present at the 2nd Global Life Sciences Conference in Warsaw, Poland 3Pressure BioSciences, Inc. Invited to Present at the 2nd Global Life Sciences Conference in Warsaw, Poland 4Fighting Mortality and Morbidity of Chronic Health Disorders during Open Access Week 2Fighting Mortality and Morbidity of Chronic Health Disorders during Open Access Week 3
... Inc. enters into an exclusive, distribution agreement with AZPA International Inc. ... ... Zealand -, LAVAL, QC, Dec. 19 /PRNewswire-FirstCall/ - Neptune ... it has entered into an exclusive distribution agreement with,AZPA International Inc. ...
... Calif., Dec. 19 SleepQuest, the leader in,at-home ... the,launch of an improved version of its main ... support its community of,patients, family members, and healthcare ... testing and sleep apnea,treatment, we have redesigned our ...
... Nonin Medical, Inc., a leading,innovator of ... Practices Award for Product Differentiation Innovation from ... industry achievements and,the Awards are recognized worldwide ... markets. The global growth consulting company honored ...
Cached Biology Technology:Nationwide product launch of NKO(R) planned for February 2008 in Australia and New Zealand 2Nationwide product launch of NKO(R) planned for February 2008 in Australia and New Zealand 3SleepQuest Launches Updated Web Site 2Nonin Medical, Inc. Receives Frost & Sullivan's 2007 Award for Product Differentiation Innovation 2Nonin Medical, Inc. Receives Frost & Sullivan's 2007 Award for Product Differentiation Innovation 3
... you reduce the chance of error. Thats ... Developed using Beckman Coulters extensive experience in ... technology, the CEQ 8000 is a fully ... fills the capillary array with a patented ...
... Chemicon Detergent-OUT Kit is a simple high ... solutions. Removes detergents without significant dilution ... protein solution on the Detergent-OUT Spin column ... columns are suitable for removing detergent from ...
... The standard electrophoresis hood is ... documentation systems. Placed on the ... in place and provides a ... on the lab bench. This ...
... SDS Kit is a simple high performance ... Removes detergents without significant dilution of ... solution on the Detergent-OUT Spin column and ... columns are suitable for removing detergent from ...
Biology Products: