Navigation Links
Deaths in the family cause bacteria to flee
Date:6/29/2010

where it was born.

"It appears that a product of cell death can help these swarmer cells sense their environment and determine if this is a good place to settle," said IU Bloomington postdoctoral fellow Ccile Berne, the paper's lead author.

As is often the case in science, the discovery was a result of serendipity.

"We initially noticed that by mixing two crowded cultures of the bacterium, we would get less biofilm formation," Berne said. "This got us thinking about the fact that throughout the living world, high population density stimulates dispersal. We set out to test whether bacteria were producing something that allowed them to switch between these two very different states of bacterial life, staying put in a biofilm or dispersing to colonize new surfaces. We found that eDNA released by dead cells as they lyse, or blow up, was binding directly to the holdfast of the newborn swarmer cells and making it less sticky. It's kind of like having a sticky substance on your fingertip and covering it with dust -- once the holdfast is coated with eDNA, it can't stick to a new surface, so the cell will be more likely to swim away."

The researchers don't know for certain whether the escape behavior of swarmer cells is a result of happenstance -- a happy accident that the holdfasts and eDNA interact -- or whether the interaction represents an active process that has been modified and fine-tuned through natural selection. Irrespective, more cells will die in worse environments, producing more eDNA, and stimulating more dispersal of the swarmer cells.

"Responding to relatives' eDNA makes a lot of sense for a bacterium because the DNA will be almost identical," Brun said. "What may be good for one bacterial species may be bad for another and vice versa. So you would not want to respond to DNA from another species, which has a different sequence than your and your siblings' DNA. What better way to sense whether the environment is ba
'/>"/>

Contact: David Bricker
brickerd@indiana.edu
812-856-9035
Indiana University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. LSU identifies community conditions related to malnutrition deaths among older adults
2. Even small dietary reductions in salt could mean fewer heart attacks, strokes and deaths
3. Clean fuels could reduce deaths from ship smokestacks by 40,000 annually
4. Cost-effective measures could stop child pneumonia deaths
5. Study links seabird deaths to soap-like foam produced by red-tide algae
6. Tree deaths have doubled across the western US
7. Stroke Belt deaths tied to non-traditional risk factors
8. Fewer deaths with preventive antibiotic use
9. New technology aims to reduce maternal and neonatal deaths
10. Study shows rise in Cornwalls dolphin, whale and porpoise deaths
11. Human deaths from shark attacks hit 20-year low last year
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Deaths in the family cause bacteria to flee
(Date:8/20/2014)... bags could one day be made out of cocoa, ... now reporting. The novel process they developed and their ... agricultural and plastic waste problems, appear in the ACS ... Bayer and colleagues at the Italian Institute of Technology ... 2012, its production reached 288 million tons worldwide, but ...
(Date:8/20/2014)... When a colony of honeybees grows to about 4,000 ... reproductive cycle: the building of a special type of ... team of experts from the Department of Neurobiology and ... what starts the reproductive cycle of honeybee colonies. The ... The Science of Nature . , Reproduction isn,t ...
(Date:8/20/2014)... POINT ROBERTS, Washington , August 20, 2014 ... Addressing Security Concerns in the Payment Industry?   ... leading sectors including biometrics, issues commentary from analysts and experts ... Peaslee , Managing Partner at Thrive Analytics, Isabelle Moeller ... CEO of NXT-ID, Inc. (OTCBB: NXTD) ( OTCQB:NXTD ), a ...
Breaking Biology News(10 mins):Worker bees 'know' when to invest in their reproductive future 2Digital Wallets for a Digital World - the Players and the Concerns for Consumer Adoption 2Digital Wallets for a Digital World - the Players and the Concerns for Consumer Adoption 3Digital Wallets for a Digital World - the Players and the Concerns for Consumer Adoption 4Digital Wallets for a Digital World - the Players and the Concerns for Consumer Adoption 5Digital Wallets for a Digital World - the Players and the Concerns for Consumer Adoption 6Digital Wallets for a Digital World - the Players and the Concerns for Consumer Adoption 7
... the Institute for Stem Cell Biology and Medicine have demonstrated ... be genetically manipulated and coaxed to develop into mature T-cells, ... The study, to be published the week of July 3 ... Academy of Sciences, found that it is possible to convert ...
... skyrocketed from 497 cases reported in 1982 (the first year ... , Lyme disease, like other zoonoses, is ... a blood meal from a vertebrate host. In the eastern ... blacklegged ticks, Ixodes scapularis, which feed on a wide variety ...
... University of North Carolina at Chapel Hill has identified ... potentially dangerous interactions with certain medications. , For almost ... and pharmacists to avoid grapefruit juice if they are ... control blood pressure or lower cholesterol. Studies have shown ...
Cached Biology News:UCLA researchers develop T-cells from human embryonic stem cells 2A new view on Lyme disease: Rodents hold the key to annual risk 2A new view on Lyme disease: Rodents hold the key to annual risk 3Study identifies substances in grapefruit juice that interact dangerously with some drugs 2
(Date:8/20/2014)... The 6th Annual Arrowhead Personalized and ... 29-30 in San Francisco, CA. This year’s conference brings ... and clinicians focused on addressing and solving the significant ... twelve years since the sequencing of the human genome, ... pharmacogenetic information in the label and molecular diagnostics have ...
(Date:8/20/2014)... your ear could improve the health of your heart, ... of Leeds used a standard TENS machine like those ... to the tragus, the small raised flap at the ... ear canal. , The stimulation changed the influence of ... nervous signals that can drive failing hearts too hard. ...
(Date:8/19/2014)... 20, 2014 One of the ... is an inadequate vascular supply. Nutrient and gas ... tissues is critical for successful regeneration and integration ... mitigate deficiencies in vascularization and promote angiogenesis in ... optimizing scaffold design and architecture, and enhancing scaffolds ...
(Date:8/19/2014)... Pa. , Aug. 19, 2014 A ... has been nominated for a Centers for Disease Control ... addressing a major public health concern. ... System, is one of a team of researchers nominated ... Charles C. Shepard Science Award for Data Methods and ...
Breaking Biology Technology:6th Annual Personalized and Precision Medicine Conference Bringing Together Thought Leaders to Discuss Clinical Implementation, Dx Reimbursement, Big Data, and Sequencing 2'Tickling' your ear could be good for your heart 2Vascularization in Tissue Engineering Highlighted at 12th New Jersey Symposium on Biomaterials Science 2Geisinger investigator nominated for federal award 2Geisinger investigator nominated for federal award 3
... ZymoGenetics, Inc. (Nasdaq:,ZGEN) announced that the company ... update on the regulatory review of recombinant thrombin,(rThrombin). ... on August 22 at 5:00,p.m. Eastern Time by ... the call approximately 10 minutes prior to,the scheduled ...
... Missourians Introduce New Ballot Initiative to Pursue Cures for Patients, ... without involving controversial Human Cloning, WASHINGTON, Aug. ... Missouri to ensure that taxpayer funds,support cures for patients, without ... Research Council, issued the,following statement on the new initiative, Cures ...
... The U.S. Food and Drug,Administration (FDA) today approved ... ages 13-17 and for the short-term,treatment of bipolar ... I disorder in children and adolescents ages 10-17. ... more than 430 adolescents,ages 13-17, in the treatment ...
Cached Biology Technology:ZymoGenetics Will Hold Conference Call Today at 5:00 p.m. Eastern Time to Provide Update on rThrombin 2FDA Approves RISPERDAL(R) to Treat Adolescents with Schizophrenia and Children and Adolescents with Bipolar Mania 2FDA Approves RISPERDAL(R) to Treat Adolescents with Schizophrenia and Children and Adolescents with Bipolar Mania 3
TEMPLIPHI HT SEQ AMPL KIT, 1 EA. Category: Sequencing Template Amplification....
This Malachite Green Phosphate Detection Kit...
Request Info...
1+ mg expected yield of purified protein, expressed in insect cells - excludes cDNA...
Biology Products: