HOME >> BIOLOGY >> NEWS
Time to rewrite the species rulebook, MSU scientists say

EAST LANSING, Mich. - From person to piranha to petunia, it's pretty easy to spot different species in the human-scale part of the plant and animal kingdoms. But a new study shows that species differences aren't so clear, at least as currently measured, when it comes to microscopic bacteria.

MSU researchers have spotted significant differences in genetic libraries among thought-to-be similar bacteria strains. The results, published this week in the journal the Proceedings of the National Academy of Sciences, suggest that new definitions are needed to catalogue bacteria single-celled organisms with at least a 3.5 billion-year history.

"It's important to point out the importance of these small microbes on Earth; even though they are small, their mass in soil and water is equal to that of all plants," said MSU microbiologist James Tiedje, one of the study's authors. "Furthermore, they are responsible for recycling the key elements of life so life on Earth can continue."

DNA, used by all life including bacteria to store genetic information, is a double-stranded molecule. When a given DNA molecule is split in two, for instance by heating it up, its two strands will spontaneously find each other, or reassociate, when the temperature drops.

Scientists have long exploited this fact in their rough rule-of-thumb approach for saying just what makes up a species of bacteria. Single strands of DNA from two bacteria are mixed together. If most of these strands reassociate specifically, if 70 percent of strands from bacteria A come together with strands from bacteria B then the two bacteria strains are said to members of the same species.

Tiedje and his MSU colleague, microbiologist Konstantinos Konstantinidis, set out to put this mix and match approach to the test. The two scientists selected 70 related bacteria whose genomes, or complete genetic libraries, had been fully sequenced.

A sequenced genome gives scientists what amounts to a
'"/>

Contact: Jim Tiedje
tiedje@msu.edu
517-355-0271
Michigan State University
8-Feb-2005


Page: 1 2 3

Related biology news :

1. New study rewrites evolutionary history of vespid wasps
2. Tiny bones rewrite textbooks
3. West Australian fossil find rewrites land mammal evolution
4. Finding rewrites the evolutionary history of the origin of potatoes
5. Lost forest yields several new species
6. Surprising new species of light-harvesting bacterium discovered in Yellowstone
7. Smithsonians National Zoo researchers use electronic eggs to help save threatened species
8. One species, many genomes
9. Reconstructing the biology of extinct species: A new approach
10. Researchers find 24 species believed new to science in Suriname rainforest
11. Scientists discover 5 new species of sea slugs from the Tropical Eastern Pacific

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Time rewrite the species rulebook MSU scientists say

(Date:7/2/2015)... 2015 Research and ... the "Natural Language Processing Market by Type ... Pattern & Image Recognition) - Worldwide Forecast to ... The key vendors occupying the market are 3M, ... Corporation, NetBase Solutions, SAS Institute Inc., Verint Systems ...
(Date:7/2/2015)... Research and Markets( http://www.researchandmarkets.com/research/jvft55/next_generation ) has ... Market by Application, Technology, Function & Geography - Global ... The next generation biometrics market is expected to ... 17.9% between 2015 and 2020 Travel & ... Safran SA ( France ), NEC ...
(Date:7/2/2015)... GOTHENBURG, Sweden , July 2, 2015 ... fingerprint sensors FPC1025, FPC1035, FPC1145 and FPC1155 from the distributor ... is one of FPC,s distributors in Asia ... Q4 2015. The sensors will be used by smartphone manufacturers ... 268 MSEK is included in the communicated revenue guidance of ...
Breaking Biology News(10 mins):Natural Language Processing Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image Recognition) - Worldwide Forecast to 2020 2Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 2Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 3FPC Receives Order for Touch Fingerprint Sensors of 268 MSEK 2
(Date:7/7/2015)... , ... July 07, 2015 , ... ... 2020 from $107.56 million in 2015, growing at a CAGR of 17.89% between ... aptamers, RNA-based aptamers, and XNA-based aptamers. Based on applications, the report is segmented ...
(Date:7/7/2015)... ... July 07, 2015 , ... Since its inception in ... What began as a conference for European Statistical Programmers, has evolved in the ... biometrical area. Statistical Programmers, Data Managers and Biostatisticians all over the world, share, ...
(Date:7/7/2015)... (PRWEB) , ... July 07, 2015 , ... CSM, a ... team as Vice President of Finance. Morse has an extensive background in financial management ... to the CSM team. In his new role, Morse will oversee all financial areas ...
(Date:7/7/2015)... ... July 07, 2015 , ... Currently ... system was developed to solve many of the complex logistical and data ... that involve multiple clinical sites and/or remote data coordination centers. , CentrePoint ...
Breaking Biology Technology:Aptamers Market Growing at 17.89% CAGR to 2020 – New Research Available at RnRMarketResearch.com 2Aptamers Market Growing at 17.89% CAGR to 2020 – New Research Available at RnRMarketResearch.com 3Aptamers Market Growing at 17.89% CAGR to 2020 – New Research Available at RnRMarketResearch.com 4Aptamers Market Growing at 17.89% CAGR to 2020 – New Research Available at RnRMarketResearch.com 5PhUSE Delighted to Welcome Member Number 5.000 2CSM Appoints Michael Morse as Vice President of Finance 2ActiGraph Launches CentrePoint Cloud-based Study Management Software Platform 2ActiGraph Launches CentrePoint Cloud-based Study Management Software Platform 3
Cached News: