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:8/17/2015)... Aug. 17, 2015  NXT-ID, Inc. (NASDAQ: NXTD ... focused on the growing mobile commerce market and creator ... campaign for Q4 2015. The new marketing campaign is ... of Amplitude Marketing Group ( http://amplitudemarketing.com/ ) and TPMG ... a leader in retail driven marketing and brand awareness ...
(Date:8/12/2015)... Florida , August 12, 2015 ... pace of mobile payment innovation and advanced biometrics technology ... replace the way consumers rely on using their credit ... with reinventing the future for payment services led by ... NXTD ), :  Google, Inc. (NASDAQ: GOOG ...
(Date:8/12/2015)... , Aug. 12, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced that four of its ... solution, have officially been named FIDO Certified™ by ... of the certification, Synaptics, Natural ID™ fingerprint solutions ... Authentication Framework (UAF) standard and are interoperable among ...
Breaking Biology News(10 mins):NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 2NXT-ID, Inc. Launches Sales Campaign for Wocket Smart Wallet with Award Winning Marketing Team 3Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 2Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 3Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 4Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 5Digital Wallet Devices & Mobile Payment Management Services Gain a Distinct Advantage in the Digital Payment Evolution as Demand Continues to Grow 6Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 3
... food outlets could provide statin drugs free of charge so ... food, researchers at Imperial College London suggest in a new ... unhealthy "LDL" cholesterol in the blood. A wealth of trial ... a person,s heart attack risk. In a paper published ...
... Professor of Microbiology, Mount Sinai School of Medicine, New ... Microbiology (ASM) to receive a 2010 ICAAC Young Investigator ... this award recognizes an early career scientist for research ... tenOever completed his postdoctoral training in Molecular Biology at ...
... than 250 scientists, engineers, government advisers and groups ... Ireland from August 15-20, 2010 to consider the ... The University of Maryland is co-sponsoring the conference, ... http://aquaticnoise.org/ ), which is co-organized by University of ...
Cached Biology News:Free statins with fast food could neutralize heart risk, scientists say 2University of Maryland co-sponsors International Conference on the Effects of Noise on Aquatic Life 2University of Maryland co-sponsors International Conference on the Effects of Noise on Aquatic Life 3
(Date:8/27/2015)... Aug. 27, 2015 HUYA Bioscience International (HUYA) today ... the Japan Society of HTLV-1, held this week at ... purpose of the Society is to promote research on ... of medical technology and research related to these fields ... "HUYA is proud to support this prestigious conference," ...
(Date:8/27/2015)... N.C. , Aug. 27, 2015 ... decision by FedEx, UPS and The US Postal ... biological specimens classified as ,select agents, by the ... history of handling these sensitive shipments. ... global transportation regulations, trained and certified personnel to ...
(Date:8/26/2015)... WARREN, N.J. , Aug. 26, 2015  Roka ... company focused on providing advanced testing solutions for the ... Thomas, CEO will present at the Sidoti & Company ... The conference will be held at the New York ... the presentation will be available through the investor relations ...
(Date:8/26/2015)... , Aug. 26, 2015 Intrexon Corporation (NYSE: ... today the closing of its previously announced public offering ... the underwriters of their option to purchase an additional ... price of $41.00 per share.  The exercise of the ... common stock sold by Intrexon to 5,609,756 shares and ...
Breaking Biology Technology:HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4Marken Ensures Safe Transportation Of Select Agents And Toxins 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 3Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 4
... SAN DIEGO, March 11, 2011 Ardea Biosciences, Inc. ... on the development of small-molecule therapeutics for the treatment ... fourth quarter and full-year 2010 financial results. ... end of February, we are in an excellent financial ...
... (Nasdaq: VRNM ), a leading industrial biotechnology ... enzymes, today announced that it repurchased $28.4 million in ... series of privately-negotiated transactions. As part of ... amount of its 5.5% Notes and $8.5 million in ...
... Inc., an emerging biopharmaceutical company focusing on the development ... Simcere Pharmaceutical Group (NYSE: SCR ), a ... Drug (IND) application with the State Food and Drug ... as BD0801) as a potential cancer therapy.  APX003 is ...
Cached Biology Technology:Ardea Biosciences Reports Recent Accomplishments and Announces Fourth Quarter and Full-Year 2010 Financial Results 2Ardea Biosciences Reports Recent Accomplishments and Announces Fourth Quarter and Full-Year 2010 Financial Results 3Ardea Biosciences Reports Recent Accomplishments and Announces Fourth Quarter and Full-Year 2010 Financial Results 4Ardea Biosciences Reports Recent Accomplishments and Announces Fourth Quarter and Full-Year 2010 Financial Results 5Ardea Biosciences Reports Recent Accomplishments and Announces Fourth Quarter and Full-Year 2010 Financial Results 6Verenium Announces Debt Repurchase 2Verenium Announces Debt Repurchase 3Apexigen Announces the Filing by its Partner, Simcere Pharmaceutical Group, of First IND 2
Zebrafish Vitellogenin ELISA System, 96 wells. ELISARange: 0.5-100 ng/ml.Sensitivity: 0.3 ng/ml.Sample volume: 100 ul.Suitable for use with Zebrafish plasma samples.3-h protocol.Store at 2-8 C. Categ...
... provide rapid and efficient removal of short ... salts from PCR products (Figure 1). The ... Binding Buffer options for fragments >100 bp ... in either single column or 96-well plate ...
The product contains 10 ml Dynabeads Epoxy (4.5 m). Supplied at 4 x 10 8 beads/ml...
Immunogen: Synthetic peptide: M(1) C V P R S G L I L S(11) Storage: -20 C, Avoid Freeze/Thaw Cycles...
Biology Products: