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:3/31/2016)... PROVIDENCE, R.I. , March 31, 2016  Genomics ... leadership of founding CEO, Barrett Bready , M.D., ... addition, members of the original technical leadership team, including ... Vice President of Product Development, Steve Nurnberg and Vice ... have returned to the company. Dr. Bready ...
(Date:3/23/2016)... 2016 Einzigartige ... und Stimmerkennung mit Passwörtern     ... MESG ), ein führender Anbieter digitaler Kommunikationsdienste, ... SpeechPro zusammenarbeitet, um erstmals dessen Biometrietechnologie einzusetzen. ... Möglichkeit angeboten, im Rahmen mobiler Apps neben ...
(Date:3/22/2016)... PROVO and SANDY, Utah ... (NSO), which operates the highest sample volume laboratory in ... Tute Genomics and UNIConnect, leaders in clinical sequencing informatics ... the launch of a project to establish the informatics ... NSO has been contracted by the ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... SILVER SPRING, Md. and RESEARCH ... -- United Therapeutics Corporation (NASDAQ: UTHR ) announced ... Co-Chief Executive Officer, of United Therapeutics will provide an ... Deutsche Bank 41 st Annual Health Care Conference. ... May 5, 2016, at 10:00 a.m. Eastern Time, and ...
(Date:4/27/2016)... (PRWEB) , ... April 27, 2016 , ... ... that Jon Clark has joined the company as an Expert Consultant. Mr. ... for industry collaborations and managing the development of small molecule monographs based on ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... PET (Positron Emission Tomography) and MRI (Magnetic Resonance Imaging) in existing third-party MRI ... testing novel treatments in small animal subjects. Simultaneous PET/MRI imaging offers a solution ...
(Date:4/27/2016)... ... ... Global Stem Cells Group and the University of Santiago Biotechnology Lab have ... for potential stem cell protocol management for 2016 – 2020. , In 2015, ... establish a working agenda and foster initiatives to promote stem cell research and development ...
Breaking Biology Technology: