Navigation Links
'Policing' stops cheaters from dominating groups of cooperative bacteria
Date:5/26/2011

nd other difficult conditions.

In mixed fruiting bodies containing both "cheater" and "cooperator" strains, the cheater strain utilized by Manhes and Velicer does not contribute a social signal required for making spores, whereas the cooperative strain does. Defection from making a social contribution allows cheater cells to "steal" the social signal from cooperators and convert a larger proportion of their cells into spores than do cooperators. Thus, the cheater strain loses to the cooperator strain when they develop in separate groups, but the cheater wins in mixed groups where they directly interact with cooperators.

The scientists mixed cooperative and cheating strains of M. xanthus and allowed cooperator lineages -- but not the cheater -- to evolve under starvation conditions in which cooperative construction of fruiting bodies is important for survival. They then watched to see how replicate lineages descended from the cooperator strain would evolve while repeatedly encountering the same non-evolving cheater over many consecutive cycles of fruiting body development.

Both strains were exposed to an antibiotic during a growth phase after each cycle of development. Cheater cells are sensitive to the antibiotic and were killed off, whereas cooperator cells were resistant to the antibiotic and their populations could continue growing and evolving. The same non-evolving cheater strain was reintroduced to the evolving cooperator lineages at the beginning of each cycle of fruiting body development and removed at the end of each cycle. The evolution experiment was allowed to run for 20 cycles of development.

"We tested whether cooperators adapted to the presence of a cheater mainly by changing their social interactions with that cheater or by improving their spore production in a way that is independent of their social environment," Manhes said. "We found that the lineages descended from the cooperative ancestor evolved novel i
'/>"/>

Contact: Steve Chaplin
stjchap@indiana.edu
812-856-1896
Indiana University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Researchers find drug that stops progression of Parkinsons disease in mice
2. Novel on-off switch mechanism stops cancer in its tracks
3. Natural compound stops retinopathy
4. Social separation stops flu spread, but must be started soon
5. Claudin 11 stops the leaks in neuronal myelin sheaths
6. Purdue researcher invents molecule that stops SARS
7. DFG establishes 18 new research training groups
8. Vitamin E may increase the life expectancy of restricted groups of men
9. DFG establishes 10 new research training groups
10. Family ties bind desert lizards in social groups
11. From the heart: How cells divide to form different but related muscle groups
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Policing' stops cheaters from dominating groups of cooperative bacteria
(Date:11/21/2014)... Wash. , Nov. 20, 2014 C-Labs ... for the Internet of Things (IoT), today announced the ... of chief operating officer. Previously a strategic advisor to ... finance, and operations. Mr. Traynor is based out of ... . He reports to Chris Muench , Chief ...
(Date:11/18/2014)...   News Highlights: ... The Partners Data Lake, an agile data and ... will allow researcher and clinicians to explore and ... lives of patients , The Partners Data ... the Partners system, breaking down physical barriers for ...
(Date:11/15/2014)... YORK , Nov. 13, 2014  While we may ... technology Doctor McCoy used in "Star Trek" to gain instant ... tools designed to work with smartphones and tablets for monitoring ... of the healthcare world. This may seem a tad Orwellian ... ready to adopt some of these technological opportunities into their ...
Breaking Biology News(10 mins):C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4
... Registration is now open for Disease Models & ... Mechanisms. This one-day Symposium will ... and disease processes at the cellular and whole-organism ... be used to address this issue. It is ...
... flower, created by the union of two foreign plant species, ... Genetic changes in this attractive yellow-flowered hybrid have allowed it to ... new species that has originated in the wild in the last ... to have originated in this way, yet only a handful of ...
... A San Francisco State University biologist has released the ... bee populations and has found low numbers of bees in ... habitat loss is one of the primary reasons for sharp ... Now the researcher plans to add to her data ...
Cached Biology News:Rare glimpse into the origin of species 2SF State researcher releases first results from nationwide bee count 2SF State researcher releases first results from nationwide bee count 3
(Date:12/19/2014)... 2014 Reports from CDC ... suffer from one or more chronic health conditions - ... can address some of these diseases, but may not ... sufferers face. While implanted nerve stimulation devices today offer ... nerve, which can induce side effects. , To ...
(Date:12/19/2014)... Dec. 18, 2014  Decision Resources Group finds that ... market will grow moderately through 2023 as the aging ... awareness of dental biomaterials all spur procedure volumes. Growth ... China and India ... procedures within reach for a larger proportion of the ...
(Date:12/17/2014)... Based on the revenues gained from surgical ... dominated by four major players contributing to approximately ... include GE Healthcare (U.K.), Siemens AG (Germany), Philips ... Report Copy at http://www.marketsandmarkets.com/Market-Reports/surgical-imaging-market-210534462.html , The ... to its strong product portfolio, which includes its ...
(Date:12/17/2014)... 2014 This report is a ... industry. For an overview analysis, the report introduces ... chain structure, industry overview, policy analysis, and news ... has witnessed rapid development with key manufacturers ... This report mentions quartz tubing upstream raw materials ...
Breaking Biology Technology:Draper Wins GSK Funding for Smaller, Smarter Implantable Devices 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 2Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 42020 Quartz Tubing Market: Global Development & Forecasts Analysis Now at DeepResearchReports.com 2
... NESS ZIONA, Israel, August 24 Foamix ... gynecology, announced today,that it has been awarded US Patent ... foam compositions, suitable for the,treatment of heat and chemical ... Dr. Dov Tamarkin, the Company,s CEO stated, ...
... This ... about how -- or even whether -- invasive saltcedar should be controlled. The Society ... natural ecosystems and carefully weigh the impact of our decisions. , ... Lawrence, KS (PRWEB) August 24, 2009 -- Saltcedar (Tamarix ...
... TONBRIDGE, England, Aug. 21 Pharmacists have branded government ... after the profession was excluded from the first wave of healthcare ... week health secretary Andy Burnham announced the list of priority patient ... However, the Department of Health [DH] list of "frontline health ...
Cached Biology Technology:Foamix Receives US Patent on Novel Foam Technology 2Invasive Saltcedar Triggers Lively Debate among Weed Scientists and Land Managers 2Invasive Saltcedar Triggers Lively Debate among Weed Scientists and Land Managers 3Chemist+Druggist Reveals Frontline NHS Staff Won't Get Swine Flu Vaccine 2