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:
TAG: Bacterial relationships revealed

(Date:8/27/2014)... 400 million years ago a group of fish began exploring ... and mammals. But just how these ancient fish used their ... evolutionary processes were at play remain scientific mysteries. , ... , turned to a living fish, called Polypterus , ... attempted to walk out of the water. Polypterus ...
(Date:8/27/2014)... brain of mice, scientists have altered the emotional ... Howard Hughes Medical Institute investigator Susumu Tonegawa at ... the connections between the part of the brain ... the part of the brain that stores the ... , Altering those connections can transform a negative ...
(Date:8/27/2014)... greatest risk to Europe based upon a proxy for ... using a ,big data, approach to scientific research. , ... Global Health ranked the top 100 pathogens affecting humans ... system which, they believe, will help governments across the ... infectious diseases, including as a result of climate change, ...
Breaking Biology News(10 mins):Walking fish reveal how our ancestors evolved onto land 2Researchers change the emotional association of memories 2Researchers change the emotional association of memories 3Researchers change the emotional association of memories 4Big data approach identifies Europe's most dangerous human and domestic animal pathogens 2
(Date:8/27/2014)... 27, 2014  A novel biomarker for rheumatoid ... better identify early-stage disease, when treatment can often ... a new study in The Journal of Rheumatology. ... DGX ) and other institutions found that ... conventional antibody-serum testing, including rheumatoid factor (RF) and ...
(Date:8/27/2014)... -- Reportbuyer.com has added a new market research ... Rational View https://www.reportbuyer.com/product/1595336/The-Graphene-Opportunity---A-Rational-View.html ... similar amount of hype currently surrounds graphene, with ... water treatment, but is graphene the only solution? ... Opportunity Report, authored by Tim Harper ...
(Date:8/27/2014)... DUBLIN , Aug. 27, 2014 ... "Global Stable Isotope Ratio Mass Spectrometer Industry Report ... The Global Stable Isotope Ratio Mass Spectrometer Industry Report ... current state of the global isotope ratio mass spectrometer ... of the industry including definitions, classifications, applications and industry ...
(Date:8/27/2014)... Florida (PRWEB) August 27, 2014 ... (SCI) is announcing the creation of the Sancilio ... to take the SCI’s philosophy of looking to ... research and development actions are based on sound ... new Scientific Advisory Board provides a vehicle for ...
Breaking Biology Technology:Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 2Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 3Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 4The Graphene Opportunity - A Rational View 2The Graphene Opportunity - A Rational View 3The Graphene Opportunity - A Rational View 4Global Stable Isotope Ratio Mass Spectrometer Industry Report 2014 2New Sancilio & Company, Inc. Scientific Board 2New Sancilio & Company, Inc. Scientific Board 3
Cached News: