Navigation Links
Life discovered on dead hydrothermal vents
Date:1/24/2012

Scientists at USC have uncovered evidence that even when hydrothermal sea vents go dormant and their blistering warmth turns to frigid cold, life goes on.

Or rather, it is replaced.

A team led by USC microbiologist Katrina Edwards found that the microbes that thrive on hot fluid methane and sulfur spewed by active hydrothermal vents are supplanted, once the vents go cold, by microbes that feed on the solid iron and sulfur that make up the vents themselves.

These findings based on samples collected for Edwards by US Navy deep sea submersible Alvin (famed for its exploration of the Titanic in 1986) provide a rare example of ecological succession in microbes.

The findings were published today in mBio in an article authored by Edwards, USC graduate researcher Jason Sylvan, and Brandy Toner of the University of Minnesota.

Ecological succession is the biological phenomenon whereby one form of life takes the place of another as conditions in an area change a phenomenon well-documented in plants and animals.

For example, after a forest fire, different species of trees replace the older ones that had stood for decades.

Scientists have long known that active vents provided the heat and nutrients necessary to maintain microbes. But dormant vents lacking a flow of hot, nutrient-rich water were thought to be devoid of life.

Hydrothermal vents are formed on the ocean floor with the motion of tectonic plates. Where the sea floor becomes thin, the hot magma below the surface creates a fissure that spews geothermally heated water reaching temperatures of more than 400 C.

After a (geologically) brief time of actively venting into the ocean, the same sea floor spreading that brought them into being shuffles them away from the hotspot. The vents grow cold and dormant.

"Hydrothermal vents are really ephemeral in nature," said Edwards, professor of biological sciences at the USC
'/>"/>

Contact: Robert Perkins
perkinsr@usc.edu
213-740-9226
University of Southern California
Source:Eurekalert

Page: 1 2

Related biology news :

1. Mysterious monkey re-discovered in Borneo
2. Extinct monkey rediscovered in Borneo by new expedition
3. How poor maternal diet can increase risk of diabetes -- new mechanism discovered
4. A new wild ginger discovered from the evergreen forest of Western Ghats of South India
5. How poor maternal diet can increase risk of diabetes - new mechanism discovered
6. Lost world discovered around Antarctic vents
7. Discovered the existence of neutrophils in the spleen
8. Plant-eating dinosaur discovered in Antarctica
9. Worlds smallest frogs discovered in New Guinea
10. Early lineage of Larkspur and Monkshood plants rediscovered in Southern Europe
11. New tick-borne disease discovered in Gothenburg
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/7/2015)... 7, 2015 Fingerprint Cards ... and FPC1035, FPC,s smallest touch fingerprint sensors to ... considered for integration on the backside of the ... increased possibilities to integrate touch fingerprint sensors in ... improves possibilities for module manufacturers to customize the ...
(Date:4/27/2015)... -- For more than four decades, AUVSI,s Unmanned Systems ... worldwide event for the unmanned land, sea, and air ... any local, national, or trade news organization interested in ... current applications of unmanned technologies. The conference will explore ... industry, and how it will soon impact the lives ...
(Date:4/21/2015)... , April 21, 2015 ... evolving government policies are boosting access control systems market ... According to a recently published report by TechSci ... 2020 ", the access control systems market in ... USD1.2 billion by 2020.The access control systems market in ...
Breaking Biology News(10 mins):FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3
... When a pathogen attacks a plant, infection usually follows ... of researchers at the University of California, Riverside focused on ... of the 19 th century by infecting potato plants, ... system. The genus Phytophthora contains many notorious ...
... As fibers go, there,s never been anything quite like spider silk. ... holds up. It is five times stronger than steel and can ... right back like new. Ounce-for-ounce spider silk is even stronger than ... be understandable to think that science knows all there is to ...
... needs to eat. But it,s a dog-eat-dog world, and with ... To cope with this vicious reality, a tiny insect that ... physical protection from its beetle predator. The pest ... numerous countries in recent years has caused immeasurable loss of ...
Cached Biology News:Scientists identify genetic mechanism that contributed to Irish Famine 2Scientists identify genetic mechanism that contributed to Irish Famine 3Stanford researcher sheds new light on the mysteries of spider silk 2Stanford researcher sheds new light on the mysteries of spider silk 3Stanford researcher sheds new light on the mysteries of spider silk 4Pest uses plant hairs for protection 2
(Date:5/29/2015)... Gatos, CA (PRWEB) May 29, 2015 ... company addressing multi-drug-resistant organisms (MDROs), announced that initial ... for same-shift bacterial detection and susceptibility testing from ... asm2015 on May 31, 2015 in New ... new class of molecular diagnostics that can quickly ...
(Date:5/29/2015)... , May 29, 2015 Delcath Systems, ... and medical device company focused on oncology with ... metastatic liver cancers, announces that results of a ... uveal melanoma patients with hepatic metastases with the ... highlighted in an on-line abstract at the American ...
(Date:5/29/2015)... Research and Markets ( http://www.researchandmarkets.com/research/7bf7ff/cytogenetics ) ... report "Cytogenetics - Technologies, Markets and Companies" ... deals with cytogenetics in a broader sense rather ... chromosome structure and identify abnormalities related to disease. ... also referred to as molecular cytogenetics. The scope ...
(Date:5/29/2015)... (PRWEB) May 29, 2015 Translation is frequently ... is for a good reason--if used in a way that ... the offering of a business product or service offering. ... can have a positive effect on a company's bottom line: ... that anyone in the world can use, why not offer ...
Breaking Biology Technology:Data Highlighting GeneWEAVE’s Smarticles™ Technology to be Presented at the 115th General Meeting of the American Society for Microbiology (asm2015) 2Data Highlighting GeneWEAVE’s Smarticles™ Technology to be Presented at the 115th General Meeting of the American Society for Microbiology (asm2015) 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 2Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 4Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 5Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 2Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 3Three Ways Translation Can Help Businesses Grow 2
... and OTTAWA, Nov. 20 Sports and,nutritional product ... http://www.naturalnutritioninc.com announced today that it has,launched an ... Lightning Pain Relief Cream. Made from a combination ... be marketed,on the internet and television. Natural ...
... Spheris to be the First Provider of Clinical Documentation Technology, ... ... Tenn., Nov. 20 Spheris has been selected as,the first ... of the nation,s leading group purchasing organizations.,Under the parties, agreement, ...
... CRY ),a biomaterials, medical device and tissue processing company, ... 19th Annual Piper Jaffray,Health Care Conference at the Pierre ... Steven G. Anderson, president and CEO of CryoLife, ... p.m. EST. CryoLife,s live presentation may be accessed ...
Cached Biology Technology:Natural Nutrition Launches International Marketing Campaign for New All Natural Analgesic: BLUE LIGHTNING(TM) Fast Pain Relief 2Provista Awards Agreement to Spheris 2CryoLife to Present at 19th Annual Piper Jaffray Health Care Conference in New York 2
Anti-Conjugated Quinaldic Acid...
... stain kits are optimized for use ... Dodeca stainers. This silver stain kit ... in polyacrylamide gels and are mass ... concentrate, silver reagent concentrate, background reducer ...
The AVR9-8 stream-select valve is a 9-port, 8-position valve for use with the BioLogic DuoFlow system. This valve is used for high-pressure stream selection....
... Miscellaneous: Versatile stain for staining RNA (bluish-purple), DNA (blue), ... TLC ≥ 90 % Cation traces: Ca ≤ ... mg/kg Cr ≤ 5 mg/kg Cu ≤ 5 mg/kg ... ≤ 5 mg/kg Mn ≤ 5 mg/kg Na ≤ ...
Biology Products: