Navigation Links
The secret to longevity in tubeworms

With an incredible lifespan of up to 250 years the deep sea tube worm, Lamellibrachia luymesi is among the longest-lived of all animals, but how it obtains sufficient nutrient ?in the form of sulfide - to keep going for this long has been a mystery. In a paper just published in the premier open-access online journal PLoS Biology, Erik Cordes and colleagues now provide a solution: by releasing its waste sulfate not up into the ocean but down into the sediments, L. luymesi stimulates the growth of sulfide-producing microbes, and ensures its own long-term survival.

The sulfide this worm needs is created by a consortium of bacteria and archaea that live in the deep sea cold sediments surrounding the seep where the worm lives. These chemoautotrophs use energy from hydrocarbons to reduce sulfate to sulfide, which L. luymesi absorbs through its unique "roots," extensions of its body that it tunnels into the sediments. However, current measurements of sulfide and sulfate fluxes in the water near the vents do not match the observed tubeworm colony size and individual longevity, leading Cordes et al. to propose that L. luymesi also uses its roots to release sulfate back to the microbial consortia from which it draws its sulfide. Without this return of sulfate, the model predicts an average lifespan of only 39 years in a colony of 1,000 individuals; with it, survival increases to over 250 years, matching the longevity of actual living tubeworms.

To date, the proposed return of sulfate to the sediments through the roots is only a hypothesis--albeit one with much to support it--that still awaits direct confirmation. By providing a model in which this hypothetical interaction provides real benefits and explains real observations, the authors hope to stimulate further research into the biology of the enigmatic and beautiful L. luymesi.

###

Citation: Cordes EE, Arthur MA, Shea K, Arvidson RS, Fisher CR (2005) Modeling the mutualistic interactions betw een tubeworms and microbial consortia. PLoS Biol 3(3): e77.


'"/>

Source:PLoS Biology


Related biology news :

1. Protein discovery could unlock the secret to better TB treatment
2. UWs Rosetta software to unlock secrets of many human proteins
3. The secret lives of whales
4. Scientists reveal molecular secrets of the malaria parasite
5. Scientists journey to southern Africa to unravel the secret world of elephant communication
6. Marine sponge yields nanoscale secrets
7. Climatologists discover deep-sea secret
8. Researchers reveal secrets of flying snakes
9. Researchers reveal secret of key protein in brain and heart function
10. Study: Well-known protein helps stem cells become secretory cells
11. New tool reveals secrets of migrating cells
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/1/2017)... Massachusetts , February 1, 2017 IDTechEx ... events on emerging technology, announces the availability of a new report, ... Continue Reading ... ... in industrial and collaborative robots. Source: IDTechEx Report "Sensors for Robotics: ...
(Date:1/26/2017)... 2017  Crossmatch, a leading provider of security and ... at combatting fraud, waste and abuse in assistance operations ... Action on Disaster Relief conference in Panama ... agencies and foreign assistance organizations throughout Latin ... are a largely unacknowledged problem in the foreign assistance ...
(Date:1/24/2017)... YORK , Jan. 24, 2017 ... study of the laboratory use of nuclear magnetic ... 363 experienced end-users and profiled current practices, developments, ... years, as well as growth and opportunities. These ... Instrument suppliers, NMR instruments, needs and innovation requirements, ...
Breaking Biology News(10 mins):
(Date:2/23/2017)... ... February 23, 2017 , ... ... clearance to begin marketing the SPEAC® System, the Brain Sentinel® Seizure Monitoring and ... or in healthcare facilities during periods of rest. A lightweight, non-invasive monitor is ...
(Date:2/23/2017)... ... 23, 2017 , ... David Nolte, PhD accepted Purdue University’s ... Purdue Research Park of West Lafayette, Indiana. , The top commercialization award ... and success with, commercializing discoveries from Purdue research. “This award is truly an ...
(Date:2/23/2017)... ... February 23, 2017 , ... The Greater Gift Initiative, Inc ... with Compass Research . GGI's mission is to advance global health and highlight ... in need in honor of each clinical trial volunteer. The vision of GGI is ...
(Date:2/23/2017)... Feb. 23, 2017 Aviva Systems Biology ... the acquisition of GenWay Biotech Incorporated, a protein ... and product offering for both the research and ... growth and enhance capabilities for both entities. GenWay,s 18 ... assays will nicely complement ASB,s objective to become ...
Breaking Biology Technology: