Navigation Links
Unusual symbiosis discovered in marine microorganisms
Date:9/20/2012

SANTA CRUZ, CA--Scientists have discovered an unusual symbiosis between tiny single-celled algae and highly specialized bacteria. Their partnership plays an important role in marine ecosystems, fertilizing the oceans by taking nitrogen from the atmosphere and "fixing" it into a form that other organisms can use.

Details of the symbiosis, published in the September 21 issue of Science, emerged from the investigation of a mysterious nitrogen-fixing microbe with a drastically reduced genome. First detected in 1998 by Jonathan Zehr, a professor of ocean sciences at the University of California, Santa Cruz, it now appears to be the most widespread nitrogen-fixing organism in the oceans. The microbe belongs to a group of photosynthetic bacteria known as cyanobacteria, but it lacks the genes needed to carry out photosynthesis and other essential metabolic pathways. Apparently, its association with a photosynthetic host cell makes those genes unnecessary.

"The cyanobacterium is a nitrogen-fixer, so it provides nitrogen to the host cell, and the host cell provides carbon to the cyanobacterium, which is lacking the metabolic machinery to get its own carbon," said Anne Thompson, a lead author of the paper and postdoctoral researcher in Zehr's lab at UC Santa Cruz. Rachel Foster of the Max Planck Institute for Marine Microbiology is the other lead author and contributed equally to this work.

Although the partners in the symbiosis have not been grown in the laboratory, Zehr's team and their collaborators have been able to characterize both partners using cell sorting, gene sequencing, and other techniques. The host cell is a type of single-celled algae in a class known as "prymnesiophytes," which are found throughout the world's oceans. In seawater samples sorted by flow cytometry, which separates cells by size and color, the host cells were discovered among the "photosynthetic picoeukaryotes," a mixed population of tiny single-celled alga
'/>"/>

Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. New forensic institute at the University of Leicester will help police forces solve unusual crimes
2. Unusual weather events identified during the Black Saturday bushfires
3. Newly discovered letters and translated German ode expand Texas link to infamous Bone Wars
4. New potential targets discovered for treating squamous cell lung cancers
5. New Danish fungal species discovered
6. New neural pathway controlling skeletal development discovered
7. Darwin discovered to be right: Eastern Pacific barrier is virtually impassable by coral species
8. Compound discovered that boosts effect of vaccines against HIV and flu
9. U of M researchers: Newly discovered genetic markers could signal colon cancer development
10. Key to burning fat faster discovered
11. 2 new owls discovered in the Philippines
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/4/2014)... November 4, 2014   ... growth   Fuel3D , a developer of ... funding round totaling $6.4 million (£4 million). This funding builds ... earlier this year and paves the way for the commercial ... The funding round was led by Chimera Partners and ...
(Date:11/3/2014)... , Nov. 3, 2014 Research and ... "Cell Therapy - Technologies, Markets and Companies" to ... cell therapy technologies and methods, which have already started to ... stem cell transplantation is replacing the old fashioned bone marrow ... Cell therapy is bound to become a part of medical ...
(Date:11/3/2014)... and preterm birth are linked to increased risk for ... the American College of Rheumatology (ACR) journal, Arthritis ... and pre-term babies were not at greater risk of ... According to the ACR, 27 million Americans over the ... of OA range from mild to severe and include ...
Breaking Biology News(10 mins):Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3Preterm, low birth-weight babies may need new hips in adulthood 2
... fuel sources are lighting a fire under research to turn ... Bill 20, signed this week by Gov. Rick Perry, compliments ... used. The new law requires more renewable energy to be ... consumer energy needs and agriculture industry trends with the legislation ...
... some day be defeated by a single treatment, according ... University of Georgia's College of Veterinary Medicine. , Their ... and Marburg and includes investigators from Vanderbilt University Medical ... The study is being funded by a grant from ...
... Berkeley, has found that damage to a cell's DNA sets ... of a marker recognized by the body's immune system. , ... advanced online issue of Nature, shed light on a long-standing ... are able to attack tumors - can differentiate cells that ...
Cached Biology News:Researchers find ways to turn manure into power 2Researchers find ways to turn manure into power 3Researcher at UGA College of Veterinary Medicine identifies new way of combating viral diseases 2New study finds how cells with damaged DNA alert the immune system 2New study finds how cells with damaged DNA alert the immune system 3
(Date:11/22/2014)... RURO, Inc., a leading LIMS, RFID ... version 5.1.4. , RURO’s deployment teams have been ... in RURO’s 8 year history. Many deployments have ... version 5.1.4 is the perfect example – the ... , Limfinity® 5.1.4 release highlights – more than ...
(Date:11/22/2014)... Quebec , November 21, 2014 ... wechselt als Chief Commercial Officer zu KLOX ... SVP der Unternehmensentwicklung und Chief Financial Officer bestellt    ... Europa mit der Vermarktung seines jüngst zugelassenen Behandlungssystems zur ... Inc. ("KLOX" bzw. das "Unternehmen") ist sehr erfreut, die ...
(Date:11/21/2014)... 20, 2014 Author Matthew J. Pallamary’s ... the Other Side” published as a tribute to ... the “Fiction: Short Story” category of the 2014 ... and CEO of USA Book News, said this year’s ... publishers, including Simon & Schuster, Penguin, John Wiley & ...
(Date:11/21/2014)... 2014 Why did Stephen Hawking become ... so instantly recognizable? Why have they become icons to ... author Hilton Ratcliffe seeks out the answers to those ... to do with science. In " Stephen Hawking Smoked ... 21, 2014), Ratcliffe puts it plainly: , “It ...
Breaking Biology Technology:RURO Announces Limfinity® version 5.1.4 2KLOX Technologies meldet Neubesetzung von Führungspositionen 2KLOX Technologies meldet Neubesetzung von Führungspositionen 3KLOX Technologies meldet Neubesetzung von Führungspositionen 4KLOX Technologies meldet Neubesetzung von Führungspositionen 5Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 2Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 4“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 2“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 3“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 4
... Del., July 13 ParagonRx, a Delaware-based company which specializes in ... website - www.paragonrx.com - that includes a ... in complying with new FDA requirements to ensure the medical benefits ... , "REMS, or Risk Evaluation and ...
... , NEWARK, N.J., July 13 ... technology-based Life Science company announced today that at ATS Labs using ... Ygiene(TM) formula produced a 100% Total Kill of ... required AOAC Sporicidal Test utilizing spore impregnated then knotted suture loops ...
... , HOLMDEL, N.J., July 13 ... quality and compliance management software, today announced that ... products, has deployed Sparta,s TrackWise ((R)) Enterprise Quality ... across its manufacturing operations in Canada and the United ...
Cached Biology Technology:ParagonRx Creates New Website Featuring REMS Help Center for Pharma 2BioNeutral's Ygiene(TM) Hospital Grade Achieves World Class Independent Test Results in Killing Life Threatening Spores/Organisms 2BioNeutral's Ygiene(TM) Hospital Grade Achieves World Class Independent Test Results in Killing Life Threatening Spores/Organisms 3BioNeutral's Ygiene(TM) Hospital Grade Achieves World Class Independent Test Results in Killing Life Threatening Spores/Organisms 4Sparta Systems' TrackWise(R) Solution Delivers Workforce Training and Learning Initiatives for Cangene Corporation 2Sparta Systems' TrackWise(R) Solution Delivers Workforce Training and Learning Initiatives for Cangene Corporation 3Sparta Systems' TrackWise(R) Solution Delivers Workforce Training and Learning Initiatives for Cangene Corporation 4
... spatulas have been designed to save time ... those interested in eliminating the recycling and ... is individually packaged, RNase/DNase free, non-pyrogenic and ... new product number, created to easily match ...
... mechanical harvesting of cells • Blade design ... with the growth surface • Designed for ... Individually wrapped • Sterilized by gamma radiation ... is a new product number, created to ...
... kit for a single fragment based screening project: , ... , 96 shape-diverse mixtures of 4 (5 ... files for structure refinement , Individual compounds ... are at ca. 50 mM. Supplied in 5 96-well trays. ...
... interferons are cytopathic effect inhibition assays, also ... The neutralization assay measures the antibody's ability ... cytokine. Sample types include; tissue culture supernatents; ... assays, one unit is defined as the ...
Biology Products: