Navigation Links
Scientists decode genome of painted turtle, revealing clues to extraordinary adaptations
Date:4/10/2013

hich are present in humans, may be important candidates for exploring oxygen-deprivation treatment in humans, the researchers noted.

Many of the extreme adaptations the researchers studied, such as the ability to survive months of anoxia total oxygen depletion are primarily seen in painted turtles, and the western painted turtle is the most anoxia-tolerant terrestrial vertebrate known. At low temperatures, such as in the ice-covered ponds where they hibernate, painted turtles can survive for four months underwater without coming up for air. Turtles are also famous for their extreme longevity, with some species even continuing to reproduce into their second century of life.

But when the research team examined genes that may be responsible for turtles' longevity, instead of finding super-active genes like the ones protecting them from oxygen deprivation, the scientists found indications that turtles' long life spans may come from silencing "life-shortening" genes.

"We looked at two genes that are either absent or severely down-regulated in other animals that live a long time," Shaffer said. "We found turtles have only non-functioning vestiges of these genes, if they have them at all. Both of these genes are present and active in humans, so they're an appealing candidate to learn about human longevity."

Analysis of the turtle genome confirmed that the shelled creatures are more closely related to birds and crocodilians than any other vertebrates. The researchers also discovered that turtles have an extraordinarily slow rate of genomic evolution and that the turtle genome evolves at about a third the rate of the human genome.

One aspect of turtle evolution that is progressing rapidly, however, is the threat of extinction. More than half of the 330 turtle species worldwide are considered threatened, making them the most endangered major group of vertebrates. Their demise is largely due to humans, partly the result
'/>"/>

Contact: Alison Hewitt
ahewitt@support.ucla.edu
310-206-5461
University of California - Los Angeles
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. 8 M € from EU to enhance access by scientists to the largest European biobanks
2. CSHL neuroscientists show jumping genes may contribute to aging-related brain defects
3. NYSCF scientists develop new protocol to ready induced pluripotent stem cell clinical application
4. Scientists find government justification of new environmental policy unfounded
5. NYSCF scientists develop 3-D stem cell culture technique to better understand Alzheimers disease
6. UGA discovery may allow scientists to make fuel from CO2 in the atmosphere
7. UT MD Anderson scientists uncover the nuclear life of actin
8. Scientists awarded £3M to study the way Northwest European seas absorb carbon
9. Scientists reveal quirky feature of Lyme disease bacteria
10. Scientists create new tools for battling secondhand smoke
11. Academy scientists receive top honors for long-term research and training initiatives in Mongolia
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/22/2014)... DENVER , Oct. 20, 2014  Leading identity ... years time half of the world,s population will have ... in Europe . Asia ... dominate the market accounting for more than 60% of ... Acuity,s report  -- "The Global National ...
(Date:10/18/2014)... stress-related psychiatric disorders are associated with increased ... mechanisms underlying this relation are unknown. Understanding ... of targeted preventive strategies and new or ... work is presented at the European College ... international group of researchers from Germany and ...
(Date:10/17/2014)... critical and pertinent for practicing physicians and clinicians given ... The Journal, Disaster Medicine and Public Health Preparedness ... Public Health, to surround the public, medical professionals and ... , On October 17, the journal published ... was prepared by Dr. Eric Toner, internist and emergency ...
Breaking Biology News(10 mins):Half the World's Population Will Have Chip-Based National Electronic Identity (eID) Cards by 2018 2Researchers find why depression and aging linked to increased disease risk 2
... Troy, N.Y. Engineering researchers at Rensselaer Polytechnic Institute ... diverse areas to help create a closed-loop artificial pancreas. ... administer insulin to patients with Type 1 diabetes, and ... living with the chronic disease. For six years, ...
... A study conducted by VTT Technical Research Centre of Finland ... grades 95E10 and 98E5 sold in Finland as regards fuel ... tests conducted by VTT using six used cars of different ... claimed in public that fuel consumption is significantly higher with ...
... a low-cost healthy lifestyle program, including self-weighing weekly or ... them from gaining too much weight during early pregnancy. ... Endocrine Society,s 93rd Annual Meeting in Boston. "Preventing ... health of all mothers and their babies and can ...
Cached Biology News:Engineering new weapons in the fight against juvenile diabetes 2Engineering new weapons in the fight against juvenile diabetes 3VTT: No significant difference in car fuel consumption between E10 and E5 petrol grades 2Pregnant women can prevent excess weight gain with simple steps, study finds 2
(Date:10/25/2014)... October 24, 2014 ... ) has announced the addition of the  ... And Other 2-D Nanomaterials "  report to ... , ,CNTs and graphene are the strongest, ... man, with a performance-per-weight greater than any ...
(Date:10/22/2014)... and BOSTON , Oct. 22, 2014 ... leading global specialty pharmaceutical company, and Rhythm, a biopharmaceutical ... exclusive option to acquire Rhythm,s wholly owned subsidiary, Rhythm ... ghrelin agonist, for the treatment of diabetic gastroparesis and ... completed a successful Phase 2 trial of relamorelin for ...
(Date:10/22/2014)... October 21, 2014 Shimadzu Scientific Instruments ... data tool for the pain management and clinical markets. ... processing and review by allowing users to highlight and ... , QuantAnalytics allows analysts to filter results by ... data processing by eliminating the need to sift through ...
(Date:10/22/2014)... Currently offering a comprehensive portfolio ... Weighing, Rice Lake, and Ohaus, Pipette.com has added ... Sartorius CPA Semi-Micro Balance is ideal for lab ... user-friendly laboratory balance. , Sartorius is a global ... balances are well known for their high performance, ...
Breaking Biology Technology:The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 2The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 3The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 4Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 2Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 3Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 4Actavis Signs Option to Acquire Rhythm Subsidiary and its GI Development Product, Relamorelin 5Shimadzu Releases QuantAnalytics Open Access LCMS Software Package for Clinical Applications 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 2Pipette.com Launches the Addition of Sartorius CPA Semi-Micro Balance to Their Product Portfolio with Special Promotional Pricing 3
... Aug. 3, 2011 Neuralstem, Inc. (NYSE Amex: ... of Defense (DOD) contract to develop its human neural ... tumors. The research contract, entitled "Research to Treat Cancerous ... out in collaboration with Principal Investigator John Zhang, MD, ...
... 2011 Cambrex Corporation (NYSE: CBM ) reports second ... Highlights Reported sales increased by ... compared to the second quarter of 2010. EBITDA was $13.2 ... compared to $12.1 million in the second quarter of 2010. ...
... Anadys Pharmaceuticals, Inc. (Nasdaq: ANDS ) announced ... on Monday, August 8, 2011, after the U.S. financial markets ... webcast on Monday, August 8, 2011, at 5:00 p.m. Eastern ... and highlights.  A live webcast of the call will be ...
Cached Biology Technology:Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 2Neuralstem Awarded Department of Defense Contract for Brain Cancer Research 3Cambrex Reports Second Quarter of 2011 Results 2Cambrex Reports Second Quarter of 2011 Results 3Cambrex Reports Second Quarter of 2011 Results 4Cambrex Reports Second Quarter of 2011 Results 5Cambrex Reports Second Quarter of 2011 Results 6Cambrex Reports Second Quarter of 2011 Results 7Cambrex Reports Second Quarter of 2011 Results 8Anadys Pharmaceuticals to Report Second Quarter 2011 Financial Results 2
... The Jouan MSC series of Class ... working conditions and certification to the ... regulation ensures that the cabinets cannot ... conditions. Natural lighting, low noise and ...
... HM-4000 Multidizer is designed with a variety ... rotating - all in one unit. Shake, ... independently operating compartments allow for hybridization and ... motion , The upper chamber uses ...
... MSC series of Class II Biological ... and certification to the world's highest ... that the cabinets cannot be adjusted ... lighting, low noise and arm rest ...
... Sensitive Bio (for heat-labile and very volatile ... to specific applications of molecular biology and ... heat-labile samples. The RC systems can be ... and a wide selection of rotors (eliminating ...
Biology Products: