Featured Research

from universities, journals, and other organizations

Genetic Adaptations Are Key To Microbe's Survival In Challenging Environment

Date:
February 7, 2009
Source:
Public Library of Science
Summary:
The genome of a marine bacterium living 2,500 meters below the ocean's surface is providing clues to how life adapts in extreme thermal and chemical gradients, according to an article in PLoS Genetics.

The research focused on the bacterium Nautilia profundicola, a microbe that survives near deep-sea hydrothermal vents. Photosynthesis cannot occur in this dark environment, where hot, toxic fluids oozing from below the seafloor combine with cold seawater at very high pressures.

The study, involving scientists at the University of Delaware, the Davis and Riverside campuses of the University of California, the Universities of Louisville, KY, and Waikato, New Zealand, and the J. Craig Venter Institute, combined genome analysis with physiological and ecological observations to investigate the importance of one gene in N. profundicola.

Previous studies found the gene only in microorganisms growing in temperatures greater than 80oC, but N. profundicola thrives best at much lower temperatures. The gene's presence in N. profundicola suggests that it might play a role in the bacterium's ability to survive rapid and frequent temperature fluctuations in its environment.

The researchers also uncovered further adaptations to the vent environment, including genes necessary for growth and sensing environmental conditions, and a new route for nitrate assimilation related to how other bacteria use ammonia as an energy source.

These results help to explain how microbes survive near deep-sea hydrothermal vents, where conditions are thought to resemble those found on early Earth, as described in the study. Improved understanding of microbes living in these conditions may aid our understanding of how life evolved here.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Campbell BJ, Smith JL, Hanson TE, Klotz MG, Stein LY, et al. Adaptations to Submarine Hydrothermal Environments Exemplified by the Genome of Nautilia profundicola. PLoS Genet, 5(2): e1000362 DOI: 10.1371/journal.pgen.1000362

Cite This Page:

Public Library of Science. "Genetic Adaptations Are Key To Microbe's Survival In Challenging Environment." ScienceDaily. ScienceDaily, 7 February 2009. <www.sciencedaily.com/releases/2009/02/090205214402.htm>.
Public Library of Science. (2009, February 7). Genetic Adaptations Are Key To Microbe's Survival In Challenging Environment. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2009/02/090205214402.htm
Public Library of Science. "Genetic Adaptations Are Key To Microbe's Survival In Challenging Environment." ScienceDaily. www.sciencedaily.com/releases/2009/02/090205214402.htm (accessed October 22, 2014).

Share This



More Plants & Animals News

Wednesday, October 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Cadaver Dogs Aid Search for More Victims of Suspected Indiana Serial Killer

Cadaver Dogs Aid Search for More Victims of Suspected Indiana Serial Killer

Reuters - US Online Video (Oct. 21, 2014) Police in Gary, Indiana are using cadaver dogs to search for more victims after a suspected serial killer confessed to killing at least seven women. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
White Lion Cubs Unveiled to the Public

White Lion Cubs Unveiled to the Public

Reuters - Light News Video Online (Oct. 21, 2014) Visitors to Belgrade zoo meet a pair of three-week-old lion cubs for the first time. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
'Cadaver Dog' Sniffs out Human Remains

'Cadaver Dog' Sniffs out Human Remains

AP (Oct. 21, 2014) Where's a body buried? Buster's nose can often tell you. He's a cadaver dog, specially trained to find human remains and increasingly being used by law enforcement and accepted in courts. These dogs are helping solve even decades-old mysteries. (Oct. 21) Video provided by AP
Powered by NewsLook.com
White Lion Cubs Born in Belgrade Zoo

White Lion Cubs Born in Belgrade Zoo

AFP (Oct. 20, 2014) Two white lion cubs, an extremely rare subspecies of the African lion, were recently born at Belgrade Zoo. They are being bottle fed by zoo keepers after they were rejected by their mother after birth. Duration: 00:42 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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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