Navigation Links
Close family ties keep microbial cheaters in check, study finds
Date:12/16/2011

ontributed disproportionately to the spore body. They had cheated.

How can a blob of cytoplasm cheat? In more ways than you'd think.

"They might," says Queller, "have a mutation that makes an adhesion molecule less sticky, for example, so that they slide to the back of the slug, the part that forms spores."

"But there are tradeoffs," says Strassmann, "because if you're too slippery, you'll fall off the slug and lose all the advantages of being part of group."

Strassmann and Queller wondered if it would be possible to break the social contract among the amoebae by setting up conditions where relatedness was low, and each clonal lineage encountered mostly strangers and rarely relatives.

Together with then graduate student Jennie Kuzdzal-Fick, they set up an experiment to learn what happened to cheating as heterogeneous (low relatedness) populations of amoebae evolved.

"At the end of the experiment we assessed the cheating ability of the descendants by mixing equal numbers of descendants and ancestors, and checking to see whether the descendants ended up in the stalks or the spores of the fruiting bodies," says Strassmann.

They found that in nearly all cases the descendants cheated their ancestors. What's more, when descendant amoebae were grown as individual clones, about a third were unable to form fruiting bodies.

Many of the mutants, in other words, were "obligate" cheaters. Having lost the ability to form their own fruiting bodies, they were able to survive only by free-loading, or taking advantage of the amoebae that had retained the ability to cooperate.

This result, Queller and Strassmann say, shows that cheater mutations that threaten multicellularity occur naturally and are even favored--as long as the population of amoebae remains genetically diverse.

But the scientists were aware that obligate cheaters are either very rare or altogether missing among wild social amoe
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Researchers closer to the super bug puzzle
2. Underage drinking among close friends high indicator of future alcohol use by black teens
3. Ready for their close-up
4. Lung regeneration closer to reality with new discovery by Weill Cornell Medical College researchers
5. Scientists move closer to predicting who will and will not fight off severe infections
6. Close up look at a microbial vaccination program
7. New threat closes in on iconic Galápagos wildlife
8. New discovery brings customized tuberculosis therapies based on genotype closer to reality
9. Discovery of natural antibody brings a universal flu vaccine a step closer
10. Scientists a step closer to understanding natural antifreeze molecules
11. IOF calls for improved strategies to close the treatment gap and reduce future burden of fractures
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Close family ties keep microbial cheaters in check, study finds
(Date:12/11/2014)... SALEM, N.C. , Dec. 10, 2014  That blood ... for quite a while. Hypertension – the medical term for ... in the early 1800s, and the inflatable cuff that,s used ... That doesn,t, however, mean there,s nothing new about hypertension, its ... some long-held beliefs about the condition and the best ways ...
(Date:12/10/2014)... N.C. , Dec. 9, 2014  Valencell, a ... it is seeing a staggering demand from its licensees ... the Company revealed, is not solely coming from fitness ... as well. "A wearable is only as ... result, accuracy is the ultimate driver in long-term mass ...
(Date:12/10/2014)... 2014 Research and Markets ( ... "Biometrics Market in Japan 2014-2018" report ... http://photos.prnewswire.com/prnh/20130307/600769 The integration of biometrics ... banking and upgradation of the driver,s license is ... market. Besides the aforementioned projects, biometrics is being ...
Breaking Biology News(10 mins):Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4Wearable Technology Products Demand Highly Accurate Biometric Technology 2Biometrics Market in Japan 2014-2018: Key Vendors are DDS, Fujitsu, Hitachi and NEC 2
... of Americans Favor Use of Biometrics in Employment,Verification ... Rosner,Research and Public Opinion Strategies today released results ... verification as a tool for,stemming illegal immigration., ... border (34,percent) and preventing the hiring of illegal ...
... at the John Innes Centre in Norwich have discovered how ... The discovery, described in the forthcoming edition of Science, also ... out as they burrow. The key is in the ... Professor Liam Dolan. We have identified a growth control mechanism ...
... College Park, MD (February 28, 2008) -- Many ... developed by physicists who imported technologies such as ... and radioisotope tagging and detection techniques into the ... (MRI), computerized tomography (CT) scanning, nuclear medicine, positron ...
Cached Biology News:Poll Shows Strong Doubts About Effectiveness of Federal Employment Verification System 2The top 5 ways medical physics has changed health care 2The top 5 ways medical physics has changed health care 3The top 5 ways medical physics has changed health care 4
(Date:12/24/2014)... ST. LOUIS , Dec. 23, 2014 /PRNewswire/ ... announced today that the waiting period under the ... with the acquisition expired on December 22, 2014, ... and review requirement for the acquisition of the ... U.S. antitrust clearance satisfies another condition to ...
(Date:12/22/2014)... 2014 /PRNewswire/ - RepliCel Life Sciences Inc. (OTCQB: REPCF) ... on the development of autologous cell therapies, announced today ... of Calgary in conjunction with co-authors from Kyoto University ... the company,s ongoing clinical research using dermal sheath cup ... The paper entitled " Hair Follicle Dermal ...
(Date:12/22/2014)... Illinois (PRWEB) December 22, 2014 ITRA ... tenants and occupiers of commercial real estate, has further ... new offices in Perth and Brisbane, Western Australia, reports ... of directors. , ITRA Global / ACORPP (Australian ... totally independent consultancy company providing property services to a ...
(Date:12/19/2014)... , Dec. 19, 2014 Naurex Inc., ... novel drugs for diseases of the central nervous system, ... and chief executive officer, will present at the 33 ... presentation will take place at 3:00 p.m. PST on ... in San Francisco, Calif. ...
Breaking Biology Technology:Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5ITRA Global Continues International Expansion in Perth and Brisbane, Australia 2Naurex to Present at 33rd Annual J.P. Morgan Healthcare Conference 2
... Mass., Jan. 13, 2011 Caliper Life Sciences, Inc. ... for the fourth quarter of 2010 of approximately $36.0 ... million, or 10% organic annual growth.  The Company,s fourth ... previous revenue guidance by approximately $2.5 million for this ...
... 13, 2011 Celsion Corporation (Nasdaq: CLSN ... development and commercialization of innovative oncology drugs, today announced ... agreement with a select group of institutional investors, including ... 5,000 shares of 8% redeemable convertible preferred stock with ...
... long-term reversal of tinnitus, a debilitating hearing impairment affecting ... to 40 percent of military veterans, according to an ... Nature . Researchers Dr. Michael Kilgard ... at Dallas and University-affiliated biotechnology firm MicroTransponder report that ...
Cached Biology Technology:Caliper Life Sciences Announces Preliminary Results for the Fourth Quarter and 2010 2Caliper Life Sciences Announces Preliminary Results for the Fourth Quarter and 2010 3Caliper Life Sciences Announces Preliminary Results for the Fourth Quarter and 2010 4Celsion Corporation Announces Convertible Preferred Stock Financing and Amended License Agreement for Aggregate Gross Proceeds of up to $9 Million 2Celsion Corporation Announces Convertible Preferred Stock Financing and Amended License Agreement for Aggregate Gross Proceeds of up to $9 Million 3Celsion Corporation Announces Convertible Preferred Stock Financing and Amended License Agreement for Aggregate Gross Proceeds of up to $9 Million 4Nature article focuses on tinnitus treatment 2Nature article focuses on tinnitus treatment 3
... For use with suspension ... RiboCap™ uses vacuum filtration or ... culture media. Compatible with ... available in larger package sizes ...
nuclear cap binding protein subunit 1, 80kDa, mRNA...
... Captivate magnetic separator for ... used in conjunction with the ... C-21476) or other magnetic particles ... 96-well microplates. Cell Biology Cell ...
ANTI DEOXY CORTICO...
Biology Products: