HOME >> BIOLOGY >> NEWS
Unique gene regulation gives chilly bugs survival advantage at bottom of the world

COLUMBUS , Ohio -- The larvae of Antarctic midges never stop producing special proteins that minimize environmental stress, allowing them to withstand a range of intense environmental conditions in one of the world's harshest environments.

Scientists found that adult midges (Belgica antarctica) lose their ability to continually express these protective heat-shock proteins. Instead, like most animals, adult midges produce these proteins only when they are stressed. The discovery currently appears in the online edition of the Proceedings of the National Academy of Sciences.

The proteins help defend the larval midges against environmental stresses including temperature changes as well as changes in water, oxygen and pH levels, said David Denlinger, the study's lead author and a professor of entomology at Ohio State University.

"They've somehow figured out a way to maintain a level of these heat-shock, or stress, proteins and still make proteins that are vital for growth and development," he said.

This mechanism seems to offer the larvae protection during their two-year life span, most of which is spent encased in ice.

All animals, including humans, make heat shock proteins, but normally they only do so during times of extreme physical stress. Curiously, adult midges don't express these proteins all the time only during periods of extreme environmental stress. Yet when most insects express stress proteins, it temporarily compromises the production of other proteins, Denlinger said.

"The production of stress proteins usually brings development to a halt," he said. "But in this case, the larvae merrily go about their business of feeding and growing while producing their stress proteins."

The Antarctic midge is barely bigger than a grain of rice, but it's still the largest free-roaming terrestrial animal to inhabit Antarctica. The larvae resemble tiny black worms.

"It's the largest species
'"/>

Contact: David Denlinger
Denlinger.1@osu.edu
614-292-8209
Ohio State University
2-Oct-2006


Page: 1 2 3

Related biology news :

1. Unique tomatoes tops in disease-fighting antioxidants
2. Unique estrogen receptor linked to metastatic breast cancer
3. Unique imaging uncovers the invisible world where surfaces meet
4. Unique Huntingtons study moves forward
5. Unique dual target specificity of kinase inhibitor key for success against cancer
6. Unique soybean lines hold promise for producing allergy-free soybeans
7. Uniquely human component of language found in gregarious birds
8. Unique equine cataract surgery offered on routine basis
9. Unique interplay between tumor and blood vessel cells promotes angiogenesis and tumor growth
10. Unique genetic profile helps over-45s conceive naturally
11. Unique library of plant genes germinates, takes root at UNC

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/20/2020)... ... March 20, 2020 , ... ... embryonic stem cell (ESC) derived mesenchymal stem cells (hES-MSC), through a proprietary method ... of neurological, autoimmune, and rare orphan diseases, today announced that the U.S. Food ...
(Date:3/19/2020)... ... ... The former Jason "Furious" Styles of "Boyz n the Hood" (1991), Laurence ... TV program highlights a large variety of subjects that have an impact on a ... dive into the world of applied academics. The episode will cover education in biomechanical ...
(Date:3/13/2020)... ... March 13, 2020 , ... According to the ... cause conjunctivitis and possibly be transmitted by aerosol or direct contact with the ... should take special precautions to avoid contracting the coronavirus. Touching the eyes while ...
Breaking Biology News(10 mins):
(Date:1/28/2020)... ... January 28, 2020 , ... Lifecycle ... to food and beverage manufactures within North America. Both Lifecycle and Midland have ... will allow each company to pool their collective resources and provide the industry ...
(Date:1/28/2020)... ... January 28, 2020 , ... ... Assay Kits . The new Salivary Total Human IgG Assay Kit ... immunoglobulin G in saliva, researchers can extend the accuracy and ease of use ...
(Date:1/27/2020)... ... January 27, 2020 , ... Valencell, the leading innovator ... investors led by Halma plc , a FTSE 100 global group of ... LLC, and WSJ Joshua Fund. A representative from Halma will join the Valencell ...
(Date:1/24/2020)... (PRWEB) , ... January 24, 2020 , ... ... innovations created by companies in biotechnology, diagnostics, therapeutics, laboratory and clinical services during ... millions of people around the world. And as Slone Partners celebrates ...
Breaking Biology Technology:
Cached News: