HOME >> BIOLOGY >> NEWS
Bacterial relationships revealed

Bacteria are an indiscriminate lot. While most organisms tend to pass their genes on to the next generation of their own species, bacteria often exchange genetic material with totally unrelated species a process called lateral gene transfer.

That is why skeptics doubted that researchers could ever hope to work out the evolutionary history of bacteria. But now, thanks to the availability of sequenced genomes for groups of related bacteria, and a new analytical approach, researchers at the University of Arizona demonstrate that constructing a bacterial family tree is indeed possible.

Nancy Moran, Emmanuelle Lerat, and Vincent Daubin propose an approach that begins by scouring genomes for a set of genes that serve as reliable indicators of bacterial evolution. This method has important implications for biologists studying the evolutionary history of organisms by establishing a foundation for charting the evolutionary events, such as lateral gene transfer, that shape the structure and substance of genomes.

Bacteria promise to reveal a wealth of information about genomic evolution, because so many clusters of related bacterial genomes have been sequenced--allowing for broad comparative analysis among species--and because their genomes are small and compact.

In this study, the researchers chose the ancient bacterial group called gamma Proteobacteria, an ecologically diverse group (including Escherichia coli and Salmonella species) with the most documented cases of lateral gene transfer and the highest number of species with sequenced genomes.

The results support the ability of their method to reconstruct the important evolutionary events affecting genomes. Their approach promises to elucidate not only the evolution of bacterial genomes but also the diversification of bacterial species events that have occurred over the course of about a billion years of evolution.


'"/>

Contact: Barbara Cohen
bcohen@plos.org
415-624-1206
Public Library of Science
15-Sep-2003


Page: 1

Related biology news :

1. Bacterial protein recycling factor possible key to new class of antibiotics
2. Bacterial viruses make cheap easy vaccines
3. Bacterial infections alter allergic response
4. Bacterial alterations source of persistent COPD lung infections
5. Bacterial quorum-sensing structure solved
6. Bacterial control of zebra mussels, low power radio
7. Bacterial proteins cause autoimmunity in the antiphospholipid syndrome
8. Bacterial communities found to follow water
9. Bacterial strain may help clean up harmful industrial waste
10. The Largest Bacterium: Scientist Discovers New Bacterial Life Form Off The African Coast
11. Gene Discovery Paves Way For Preventing Deadly Bacterial Shock

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/31/2016)... , March 31, 2016   ... ("LegacyXChange" or the "Company") LegacyXChange is excited ... of its soon to be launched online site for ... https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide potential shareholders a ... DNA technology to an industry that is notorious for ...
(Date:3/29/2016)... RATON, Florida , March 29, 2016 ... or the "Company") LegacyXChange "LEGX" and SelectaDNA/CSI Protect are ... DNA in ink used in a variety of writing ... theft. Buyers of originally created collectibles from athletes on ... through forensic analysis of the DNA. ...
(Date:3/22/2016)... 22, 2016 According ... Market for Consumer Industry by Type (Image, Motion, ... (Communication & IT, Entertainment, Home Appliances, & ... to 2022", published by MarketsandMarkets, the market ... reach USD 26.76 Billion by 2022, at ...
Breaking Biology News(10 mins):
(Date:6/22/2016)... Research and Markets has announced the addition of the "Biomarkers: ... The global biomarkers market has grown ... market is expected to grow at a five-year compound annual growth ... billion in 2015 to $96.6 billion in 2020. ... 2020) are discussed. As well, new products approved in 2013 and ...
(Date:6/22/2016)... --  StockNewsNow.com , The Official MicroCap News Source™, today ... Pourhassan , President & CEO of CytoDyn Inc. (OTCQB: ... and potential commercialization of humanized monoclonal antibodies for the ... company,s website (see here: www.CytoDyn.com ). The video ... 2016, at the LD Micro Invitational in ...
(Date:6/22/2016)... , June 22, 2016   ViaCyte, Inc. ... pluripotent stem cell-derived islet replacement therapy for the treatment ... at ISSCR 2016 Annual Meeting.  ISSCR 2016, the Global ... 25th at Moscone West in San Francisco.  ... the presentations are as follows:Event: , Focus Session: Tools ...
(Date:6/22/2016)... , ... June 22, 2016 , ... ... placing a spotlight on immigrant achievements and contributions to North Texas and the ... important contributors from the immigrant community to the civic and economic vitality of ...
Breaking Biology Technology:
Cached News: