Featured Research

from universities, journals, and other organizations

Extreme Survival: Genes Let Creepy-crawly Creatures Survive Deep Freeze

Date:
July 21, 2009
Source:
BioMed Central
Summary:
Arctic springtails (Megaphorura arctica) survive freezing temperatures by dehydrating themselves before the coldest weather sets in. Researchers have identified a suite of genes involved in controlling this extreme survival mechanism.

Megaphorura arctica.
Credit: Image courtesy of BioMed Central

Arctic springtails (Megaphorura arctica) survive freezing temperatures by dehydrating themselves before the coldest weather sets in. Researchers have now identified a suite of genes involved in controlling this extreme survival mechanism.

Melody Clark led a team of researchers from the British Antarctic Survey and the University of Novi-Sad, Serbia, who studied the arthropods. She said, "This is the first in-depth molecular study on the underlying cold survival mechanisms in this species. Such information is not only of interest to ecologists, but also to the medical field of cryobiology."

Arctic springtails desiccate themselves in order to survive the worst of polar ice, snow and low temperatures, which can easily reach -14C. They shrivel up into small husks until, when conditions become more favorable, they rehydrate themselves and re-emerge. This is the first study to identify the genetic basis for this physiological process. To generate the cold-induced gene expression profile of springtails, Clark and her colleagues compared gene expression in groups of the animals exposed to different environmental conditions.

They showed that genes involved in a number of significant cellular processes, namely the production and mobilisation of a natural anti-freeze called trehalose, protection of cellular systems via small heat shock proteins and tissue/cellular remodeling, were activated during the cold-induced dehydration process. Genes that dominated when the animals were allowed to recover at a higher temperature, were those involved in energy production, leading to protein production and cell division.

Speaking about possible implications of this research, Clark said, "This is part of a larger European project called Sleeping Beauty, which is looking at how different animals survive desiccation. Understanding how animals survive harsh cold environments will hopefully provide novel solutions for medical research and preserving tissues for transplant operations".


Story Source:

The above story is based on materials provided by BioMed Central. Note: Materials may be edited for content and length.


Journal Reference:

  1. Melody S Clark, Michael A.S Thorne, Jelena Purac, Gavin Burns, Guy Hillyard, Zeljko D Popovic, Gordana Grubor-Lajsic and M Roger Worland. Surviving the cold: molecular analyses of insect cryoprotective dehydration in the Arctic springtail Megaphorura arctica (Tullberg). BMC Genomics, (in press) [link]

Cite This Page:

BioMed Central. "Extreme Survival: Genes Let Creepy-crawly Creatures Survive Deep Freeze." ScienceDaily. ScienceDaily, 21 July 2009. <www.sciencedaily.com/releases/2009/07/090720191143.htm>.
BioMed Central. (2009, July 21). Extreme Survival: Genes Let Creepy-crawly Creatures Survive Deep Freeze. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2009/07/090720191143.htm
BioMed Central. "Extreme Survival: Genes Let Creepy-crawly Creatures Survive Deep Freeze." ScienceDaily. www.sciencedaily.com/releases/2009/07/090720191143.htm (accessed September 19, 2014).

Share This



More Plants & Animals News

Friday, September 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Chimp Violence Study Renews Debate On Why They Kill

Chimp Violence Study Renews Debate On Why They Kill

Newsy (Sep. 17, 2014) The study weighs in on a debate over whether chimps are naturally violent or become that way due to human interference in the environment. Video provided by Newsy
Powered by NewsLook.com
Some Tobacco Farmers Thrive Amid Challenges

Some Tobacco Farmers Thrive Amid Challenges

AP (Sep. 16, 2014) The South's tobacco country is surviving, and even thriving in some cases, as demand overseas keeps growers in the fields of one of America's oldest cash crops. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

AFP (Sep. 16, 2014) Scientists say a female colossal squid weighing an estimated 350 kilograms (770 lbs) and thought to be only the second intact specimen ever found was carrying eggs when discovered in the Antarctic. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins