Featured Research

from universities, journals, and other organizations

A Harmonic "Ménage À Trois"

Date:
May 18, 2001
Source:
Max Planck Society
Summary:
Scientists at the Max Planck Institute for Marine Microbiology in Bremen/Germany, and their colleagues have discovered a unique symbiosis between bacteria and a marine worm, described in the May 17th issue of Nature.

Scientists at the Max Planck Institute for Marine Microbiology in Bremen/Germany, and their colleagues have discovered a unique symbiosis between bacteria and a marine worm, described in the May 17th issue of Nature.

Related Articles


The term symbiosis typically evokes an image of beneficial interactions between two individuals, the symbiont and the host. Associations with multiple endosymbionts are assumed to be rare because competition between symbionts could be harmful to the host, suggesting that in most symbioses three is a crowd.

Dr. Nicole Dubilier and her colleagues at the Max Planck Institute for Marine Micorbiology in Bremen have discovered a unique type of symbiosis that could be described as a "ménage à trois" in a gutless marine worm from the animal group Oligochaeta. This marine relative of earthworms does not have a mouth or gut, and harbors sulfide-oxidizing bacteria as its primary symbiotic partner.

These symbionts use sulfide as an energy source for the fixation of carbon dioxide into organic compounds, which are passed on to the host. Sulfide concentrations in the worm's environment are unusually low, so low that the scientists were at first puzzled how the worm and its primary symbiont could survive.

This question was answered when the researchers discovered that the worms harbor sulfate-reducing bacteria as secondary symbiotic partners. The sulfate-reducing symbionts produce sulfide as a metabolic endproduct that can serve as an energy source for the sulfide-oxidizing symbionts.

In this endosymbiotic sulfur cycle, the two symbionts not only share a mutualistic relationship with their host but also with each other.

The full article is available at http://www.mpi-bremen.de/deutsch/moloek/dubeng3.html at the Max Planck Institute for Marine Microbiology.


Story Source:

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


Cite This Page:

Max Planck Society. "A Harmonic "Ménage À Trois"." ScienceDaily. ScienceDaily, 18 May 2001. <www.sciencedaily.com/releases/2001/05/010518081723.htm>.
Max Planck Society. (2001, May 18). A Harmonic "Ménage À Trois". ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2001/05/010518081723.htm
Max Planck Society. "A Harmonic "Ménage À Trois"." ScienceDaily. www.sciencedaily.com/releases/2001/05/010518081723.htm (accessed January 31, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Saturday, January 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Nanoscale Sensor Could Help Wine Producers and Clinical Scientists

Reuters - Innovations Video Online (Jan. 30, 2015) — A nanosensor that mimics the oral effects and sensations of drinking wine has been developed by Danish and Portuguese researchers. Jim Drury saw it in operation. Video provided by Reuters
Powered by NewsLook.com
Dog-Loving Astronaut Wins Best Photo of 2015

Dog-Loving Astronaut Wins Best Photo of 2015

Buzz60 (Jan. 30, 2015) — Retired astronaut and television host, Leland Melvin, snuck his dogs into the NASA studio so they could be in his official photo. As Mara Montalbano (@maramontalbano) shows us, the secret is out. Video provided by Buzz60
Powered by NewsLook.com
U.S. Wants to Analyze DNA from 1 Million People

U.S. Wants to Analyze DNA from 1 Million People

Reuters - US Online Video (Jan. 30, 2015) — The U.S. has proposed analyzing genetic information from more than 1 million American volunteers to learn how genetic variants affect health and disease. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Rarest Cat on Planet Caught Attacking Monkeys on Camera

Rarest Cat on Planet Caught Attacking Monkeys on Camera

Buzz60 (Jan. 30, 2015) — An African Golden Cat, the rarest large cat on the planet was recently caught on camera by scientists trying to study monkeys. The cat comes out of nowhere to attack those monkeys. Patrick Jones (@Patrick_E_Jones) has the rest. Video provided by Buzz60
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