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:11/6/2014)... of metastasis, yet progress in preventing and treating ... been particularly challenging to design drugs that work ... systems biology at Harvard Medical School. , ... already metastasized." , Gujral and colleagues have now ... better understand how metastasis begins. Their findings may ...
(Date:11/5/2014)... dedicated his career to understanding the Earth,s climate ... , As deputy director and regional climatologist for ... Research Institute, Redmond has more than three decades ... of climate data to the general public. , ... Francisco on December 15-19, 2014 the American Geophysical ...
(Date:11/4/2014)... Temple University School of Medicine announced today that ... initiative funded by the Bill & Melinda Gates ... Obstetrics, Gynecology and Reproductive Sciences; and Vice Chair ... School of Medicine will pursue an innovative global ... Biomarkers to Assess Fetal Neurodevelopment.", Grand Challenges Explorations ...
Breaking Biology News(10 mins):Migration negation 2Migration negation 3Nevada climatologist to be honored at AGU Fall Meeting for lifetime of public outreach 2Temple University School of Medicine receives Grand Challenges Explorations grant 2
... The next time you,re outdoors, see if you can spot the ... an easy task trees there are few and far between, ... In the temperate Northeast, dense forests make the exercise a bit ... sequoias often reach higher than the eye can estimate. Knowing ...
... The United States joined more than 50 countries Thursday ... to better track vessels engaged in illegal, unreported and ... highly migratory species. Annual global economic losses due to ... $23 billion. This action is a first step ...
... This release is available in French . ... Neanderthals and is found exclusively in people outside Africa, according ... of the Department of Pediatrics at the University of Montreal ... in the July issue of Molecular Biology and Evolution. ...
Cached Biology News:MIT: The tallest tree in the land 2MIT: The tallest tree in the land 3US joins over 50 nations in adopting recommendation to list vessels engaged in illegal fishing 2US joins over 50 nations in adopting recommendation to list vessels engaged in illegal fishing 3Genetic research confirms that non-Africans are part Neanderthal 2
(Date:11/26/2014)... SoundConnect , an award winning unified ... that Darren Suders has joined the team as Director ... the partner program through innovative offerings, consistent ... Darren brings more than 10-years of channel telecommunication experience ... operations, from policy development, to partner education and to ...
(Date:11/26/2014)... 25, 2014 Bio-Techne Corporation (NASDAQ: ... Robert Gavin to serve in a newly created ... Division.  Mr. Gavin will be responsible for managing the ... the ProteinSimple business acquired in July 2014 and the ... Jose, California -based ProteinSimple develops and commercializes proprietary ...
(Date:11/24/2014)... UAE, November 24, 2014 Five ... Bin Rashid Al Maktoum Awards for Medical Sciences", in ... Dubai, United Arab Emirates , on 15 December ... , The Carter Center which won the ... actively involved in numerous programs that aim to improve ...
(Date:11/24/2014)... SOUTH SAN FRANCISCO, Calif. , Nov. 24, 2014 /PRNewswire/ ... announced that Bonnie H. Anderson , president and chief ... the Piper Jaffray 26 th Annual Healthcare Conference on ... New York . The live audio ... website at http://investor.veracyte.com . Please connect to the website ...
Breaking Biology Technology:SoundConnect Appoints Director of Channel Development & Sales 2Bio?Techne Announces Appointment Of Robert Gavin As Leader Of New Protein Platforms Division 2Bio?Techne Announces Appointment Of Robert Gavin As Leader Of New Protein Platforms Division 3Five US Winners Among Recipients of Hamdan Medical Awards 2Veracyte to Present at the Piper Jaffray 26th Annual Healthcare Conference 2
... age rests on our ability to control how electric ... circuitry. Doing so requires particular precision, for applications ranging ... task falls to semiconductors. Now, a research team ... Applied Science and Arts and Sciences has shown how ...
... (Nasdaq: SGMO ) today announced the pricing of ... common stock at a price to the public of $7.70 ... or around Wednesday, April 13, 2011, subject to customary closing ... this offering and Sangamo has granted the underwriter a thirty ...
... Inc. (Nasdaq: SGMO ) announced today that it ... pursuant to an effective shelf registration statement in an underwritten ... in this offering and Sangamo will grant the underwriter a ... shares. The securities described above are being ...
Cached Biology Technology:Penn research advances understanding of lead selenide nanowires 2Penn research advances understanding of lead selenide nanowires 3Sangamo Announces Pricing of Public Offering of Common Stock 2Sangamo Announces Pricing of Public Offering of Common Stock 3Sangamo Announces Public Offering of Common Stock 2Sangamo Announces Public Offering of Common Stock 3
... Jouan RCT series of refrigerated cold traps ... trapping of low volatility/aqueous solvents or high ... and other vacuum concentrators/centrifugal evaporators. Also used ... systems such as used in electron microscopes. ...
... The RVT405DDA Refrigerated Vapor Trap ... of high boiling solvents such as ... DDA™ systems. Its constant temperature refrigeration ... creates optimum cryopumping conditions for DMSO, ...
96 Well Plate Sterile, RE bottom; consistent medium binding affinity for hydrophobic complexes and proteins....
Thermo Forma provides an array of accessory Racks for the Cryo/CryoPlus 16" Diameter storage system. To maximise inventory capacity a Jumbo Arrowhead configuration is recommended. You may choose betw...
Biology Products: