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

card catalogue guide to an organism's genetic information.

The MSU scientists downloaded the already-sequenced bacteria genomes from a variety of sites on the Internet. Then they did some cross-card catalogue comparisons.

To their surprise, many bacteria that are considered members of the same species by the current mix and match approach, often share as few as 65 percent of their genes. Humans, in comparison, share 75 percent of their genes with fish.

No one's calling for the species rules to be rewritten so that humans are lumped with their distant underwater relatives. And when it comes to bacteria, the authors say, the current species definition appears to be too liberal.

Much of the differences between genetically-similar bacteria appear to be the result of environmental pressures. E. coli bacteria, for instance, exists everywhere from the intestines of warm blooded animals to paper mills. Any new way of tallying up bacteria species should "accommodate the ecological distinctiveness of the organisms," the authors write.

"The point is about the value of a correct understanding of species people expect a species to have certain traits and live in certain habitats," said Tiedje, whose work is also supported by the Michigan Agricultural Experiment Station. "If the species definition is not reasonably predictive of this, then it loses its value. This can be important for pathogen identification, quarantine or biotechnology, for example."

Konstantinidis and Tiedje also noted that even bacteria with genetic card catalogues that were as much as 99 percent similar had enough outward differences to be separate species. This shouldn't come as a shock. Humans and chimpanzees, in comparison, share 98.7 percent of their DNA. But that small difference at the genetic level results in a big difference when it comes to outward appearance and Konstantinidis and Tiedje's work is supported by the Bouyoukos Fellowship Progr
'"/>

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:6/17/2015)... June 17, 2015  Crossmatch™, a leading provider ... its U.are.U ® 4500 fingerprint readers have ... Eateries, Inc., a San Jose, CA ... increase security, improve accountability and reduce fraud at ... non-repudiable identity confirmation for employee sign in and ...
(Date:6/16/2015)... Fingerprint Cards has received an order ... company,s portfolio from one of its module partners in ... place during the third quarter 2015. The sensors will be ... Jörgen Lantto, CEO of FPC, comments: " This ... interest from smartphone OEMs in integrating touch fingerprint sensors in ...
(Date:6/15/2015)... YORK , June 15, 2015 ... today from Telstra reveals the majority of US consumers using ... them via biometrics, such as fingerprint and voiceprint, instead of ... According to Telstra,s " Mobile Identity   - ... " report, with smartphones now the primary channel used ...
Breaking Biology News(10 mins):Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 2Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 3FPC Receives Order for Touch Fingerprint Sensors of 375 MSEK 2One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 2One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 3One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 4
(Date:7/3/2015)... Forskere kan søke ... Science", som finner sted i ... på  http://www.openinnovationinscience.at , og søknadsperioden varer frem ... to største utfordringene innen helsevitenskapen er mangelen ... og kompleksiteten av nåværende forskningsresultater, i følge ...
(Date:7/2/2015)... ELLYN, Ill. , July 2, 2015 ... Colton Eakins are gaining invaluable real-world experiences ... of Technology this summer. The students will ... Dr. Jeff Wereszczynski,s research group at IIT. The ... Dr. Tom Carter , Physics; Dr. Kathy ...
(Date:7/2/2015)... ... July 02, 2015 , ... In’Tech Medical SAS ( http://www.intech-medical.com ... announced today the acquisition of Turner Medical, Inc ., thus becoming a ... to the Spine Industry. The acquisition of Turner Medical ideally supplements In’Tech Medical’s ...
(Date:7/1/2015)... , ... July 01, 2015 , ... The next-generation sequencing ... key market segments, including the molecular diagnostics industry. BCC Research reveals in its new ... NGS-based tests, lower test costs, and a growing need for better diagnostics as part ...
Breaking Biology Technology:Lansering av verdens første Open Innovation-program for utdanning av forskere 2Lansering av verdens første Open Innovation-program for utdanning av forskere 3COD Students Participate in Prestigious Summer Internships 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 3NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 3
Cached News: