Navigation Links
Study shows unified process of evolution in bacteria and sexual eukaryotes
Date:4/5/2012

population are clones from a common ancestor, the idea of species doesn't apply. But if as this new study shows genes randomly shared among individuals can bring about a new, ecologically specialized population, use of the term may be warranted.

"We found that the differentiation between populations was restricted to a few small patches in the genome," says Eric Alm, the Karl Van Tassel (1925) Career Development Associate Professor of Civil and Environmental Engineering and Biological Engineering and an associate member of the Broad Institute.

Professor Martin Polz of CEE, co-principal investigator on the project, adds, "Similar patterns have been observed in animals, but we didn't expect to see it in bacteria"

The process of ecological differentiation in bacteria, the researchers found, is similar to that in malaria-transmitting mosquitoes: Some populations develop resistance to antimalarial agents by means of a single gene sweep, while other populations sharing the same habitat do not. The stickleback fish has also been shown to follow this pattern of "sympatric speciation" in shared habitats.

"Even though the sources of genetic diversity are quite different between bacteria and sexual eukaryotes, the process by which adaptive diversity spreads and triggers ecological differentiation seems very similar," says first author Jesse Shapiro PhD '10, a postdoc at Harvard University who did his graduate work in Alm's lab at MIT.

The researchers performed the work using 20 complete genomes of the bacterium Vibrio cyclitrophicus that had recently diverged into two ecological populations adapted to microhabitats containing different types of zooplankton, phytoplankton, and suspended organic particles in seawater. In a previous study based on just a few marker genes, they had predicted that these closely related Vibrio populations were in the process of developing into two distinct habitat-associated populations.

The
'/>"/>

Contact: Denise Brehm
brehm@mit.edu
617-253-8069
Massachusetts Institute of Technology, Department of Civil and Environmental Engineering
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study shows unified process of evolution in bacteria and sexual eukaryotes
(Date:7/9/2014)... one of the amphibians with the highest distribution in ... of water where it comes into contact with the ... carried out by the Spaniard Germn Orizaola from the ... these frogs have developed a defensive response to the ... bodies if they co-exist with the crayfish. , Numerous ...
(Date:7/9/2014)... function and increase the survival rate of naturally ... School of Pharmaceutical Sciences, Southwest University, China performed ... administered with low dose of levothyroxine for 3 ... exhibited an obvious improvement in cognitive and an ... The underlying mechanism was demonstrated that levothyroxine treatment ...
(Date:7/9/2014)... vitamin D in their blood are more likely to survive ... highest levels of vitamin D have half the risk of ... reveal. , The study is the first to correlate total ... their diagnosis which includes that produced after exposure to ... long term survival prospects. , The University of Edinburgh ...
Breaking Biology News(10 mins):Frogs have developed rapid defences against the red swamp crayfish 2Frogs have developed rapid defences against the red swamp crayfish 3
... is helping to reduce the drug cravings of addicted rats. ... some parts of the brain lose glutamate receptors from the ... neurons. The researchers have sidestepped this problem by crafting a ... glutamate receptor and, once inside a neuron, serves as a ...
... discovered in tiny snow fleas by Queen's University researchers ... transplantation. , Drs. Laurie Graham and Peter Davies, from ... produced by the fleas to protect themselves against freezing ... Celsius degrees. This would allow organs to be stored ...
... zebrafish may be able to play a critical role in ... that can lead to it - and identified one gene ... , The findings were published in a professional journal, Proceedings ... State University and two Boston hospitals, the Brigham and Women's ...
Cached Biology News:Grabbing addiction by the tail 2Grabbing addiction by the tail 3New antifreeze protein found in fleas may allow longer storage of transplant organs 2Zebrafish may hold key to improved cancer research 2Zebrafish may hold key to improved cancer research 3
(Date:1/14/2014)... 2014 EquitiesIQ, a leading informational research ... Alliqua is an emerging biomedical company acquiring, developing, manufacturing, ... market. , Free report download: http://equitiesiq.com/reports/alliqua/ , ... management team and Board, which launched the company’s new ...
(Date:1/14/2014)... Boston, MA (PRWEB) January 14, 2014 iLab ... Michelle Detwiler as the new Director of Product Strategy. In ... as well as iLab sub-teams to guide in the development ... that iLab provides the maximum possible benefit to the scientific ...
(Date:1/14/2014)... Global Record Systems, LLC, (GRS), ... solutions for patients, physicians, the biopharmaceutical industry, regulators, ... the signing of a three-year Research Collaboration Agreement ... (FDA). This initiative is designed to generate ...
(Date:1/14/2014)... January 14, 2014 Kerr Corporation, a leading ... and additional how-to information about dual arch impressions on its ... Dual Arch Impressions,” the blog entry serves up a list ... houses a step-by-step demonstration by Dr. David Little as he ...
Breaking Biology Technology:EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2Global Record Systems Announces Research Collaboration Agreement with FDA to Create a Novel “Big Data” Paradigm for Collection of Patient Safety and Outcomes Information 2
... 9 The results of a new study on immune-based ... sites around the country, will be published in the December ... MD, MS, director of the Butler Hospital Memory and Aging ... Warren Alpert Medical School of Brown University, says that this ...
... , , QUEBEC CITY, Dec. 9 /PRNewswire-FirstCall/ ... AEZ) (the "Company"), a global biopharmaceutical company focused on ... appointment of Pierre Lapalme to its Board of Directors. ... has over the course of his career held numerous ...
... , OXFORD, England, December ... Recent Recruitment of Senior Antibody Industry,Leaders and Highlights OBT,s Growth ... Oxford BioTherapeutics (OBT) has today announced the appointment of ... experience to OBT at an exciting phase in the Company,s,development, ...
Cached Biology Technology:Butler Hospital Neurologist Lead Author of Ground Breaking Bio-Engineered Treatment Study for Alzheimer's Disease 2AEterna Zentaris Announces Appointment of New Board Member 2Oxford BioTherapeutics Appoints Michael Moore as Chairman 2Oxford BioTherapeutics Appoints Michael Moore as Chairman 3Oxford BioTherapeutics Appoints Michael Moore as Chairman 4
Anti-CD74 Monoclonal Antibody Description: 200 l Research Focus: cell surface antigens Storage: 4C Shipping Temperature: 4C...
POU domain, class 2, transcription factor 2,...
HSPBP1 Antibody...
golgi reassembly stacking protein 2, 55kDa...
Biology Products: