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.

Related Articles


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 April 21, 2015 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 April 21, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Tuesday, April 21, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deepwater And Dolphins: The Oil Spill's Impact 5 Years On

Deepwater And Dolphins: The Oil Spill's Impact 5 Years On

Newsy (Apr. 20, 2015) Five years on, the possible environmental impact of the Deepwater Horizon spill includes a sustained die-off of bottlenose dolphins, among others. Video provided by Newsy
Powered by NewsLook.com
Five Years Later, the BP Oil Spill Is Still Taking Its Toll

Five Years Later, the BP Oil Spill Is Still Taking Its Toll

AFP (Apr. 20, 2015) On April 20, 2010, an explosion and fire on the Deepwater Horizon rig in the Gulf of Mexico started the biggest oil spill in US history. BP recently reported the Gulf is recovering well, but scientists paint a different picture. Duration: 02:36 Video provided by AFP
Powered by NewsLook.com
Thai Customs Seize African Elephant Tusks Worth $6 Mn

Thai Customs Seize African Elephant Tusks Worth $6 Mn

AFP (Apr. 20, 2015) Thai customs seize four tonnes of African elephant ivory worth $6 million at a Bangkok port in a container labelled as beans. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Un-Bee-Lievable: Bees on the Loose After Washington Truck Crash

Un-Bee-Lievable: Bees on the Loose After Washington Truck Crash

Reuters - US Online Video (Apr. 17, 2015) A truck carrying honey bees overturns near Lynnwood, Washington, spreading boxes of live bees across the highway. Rough Cut (no reporter narration). Video provided by Reuters
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