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

e in the 1- to 3-micron size range.

"Aside from the importance of nitrogen fixation in marine ecosystems, this is such an interesting symbiosis from an evolutionary perspective, because it can be seen as analogous to an early stage in the endosymbiosis that led to chloroplasts," Zehr said.

Chloroplasts, which carry out photosynthesis in all plants, evolved from symbiotic cyanobacteria that eventually became incorporated into their host cells in a process known as endosymbiosis. In the newly discovered nitrogen-fixing partnership, the cyanobacteria are mostly seen in an indentation at one end of the host cell.

"At this point, it's unclear exactly how the cyanobacteria are associated with the host cells. It looks like there may be a little groove in the host cell where the cyanobacteria fits," said Thompson. "The association is robust enough to go through the cell sorter and other preparations, but delicate enough that they separate if they're filtered or frozen and thawed."

In previous work, Zehr's team had studied the cyanobacteria, which they called UCYN-A, in samples processed at sea and brought back to the lab for cell sorting and genetic analysis. Despite being unable to grow it in the lab, they were able to sequence the microbe's complete genome and discover that it was missing the genes for several key metabolic pathways, suggesting that it might live in association with another organism. Thompson said researchers were only able to see the symbiotic partners together when they sorted freshly collected seawater samples on board the ship.

"Our collaborators at the University of Hawaii, Dave Karl and Ken Doggett, put a cell sorter into a portable laboratory, like a lab in a box, so now we can take the machine to sea and sort cells that minutes before were in their natural environment. That's how we found the association," Thompson said.

The exchange of carbon and nitrogen between the two partners was demonst
'/>"/>

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:9/30/2014)... DURHAM, N.C. -- Pollution in urban and farm runoff ... a new study finds. , The study, published ... shows that nitrogen in the runoff ends up in ... tumors on the animals, eyes, flippers and internal organs. ... and the National Oceanic and Atmospheric Administration (NOAA) conducted ...
(Date:9/30/2014)... wrong with your muscles because of age, disease or injury, ... That,s where a new research report published in the October ... comes in. In the report, a team of scientists produce ... scientists "see" which genes are active in an organ at ... and that men have approximately 400 more active genes in ...
(Date:9/30/2014)... , Sept. 30, 2014  Spectra ... solutions for the biotech and power generation ... new RECONN Bioprocess Manager, an easy-to-use and ... geared towards bioprocess development laboratories. ... disparate bioreactor and analyzer systems. Accessing and ...
Breaking Biology News(10 mins):Pollution linked to lethal sea turtle tumors 2Pollution linked to lethal sea turtle tumors 3Scientists identify which genes are active in muscles of men and women 2Spectra Automation Introduces RECONN Bioprocess Manager 2
... National Institute of Standards and Technology (NIST) have ... clumps of proteins in protein-based pharmaceuticals. This first ... can be assured that their instruments are faithfully ... concern because of its impact on quality control ...
... laundry products and air fresheners found the products emitted ... off at least one chemical regulated as toxic or ... was listed on the product labels. , "I first ... me that the air fresheners in public restrooms and ...
... the first issue of , Energy & Environmental Science ... Free for all to read online, this inaugural ... hydrogen storage, thermochemical biofuel production, sustainable energy, and much ... of the highest quality, knowing that they can rely ...
Cached Biology News:NIST trumps the clumps: Making biologic drugs safer 2Toxic chemicals found in common scented laundry products, air fresheners 2Toxic chemicals found in common scented laundry products, air fresheners 3
(Date:10/1/2014)... 1, 2014  Spherix Incorporated (Nasdaq: SPEX) -- an intellectual ... monetization of intellectual property, announced today that the ... Uniden in the U.S. District Court for the ... has been rescheduled for November 10, 2014.  This ... The Court Order setting the Markman date was ...
(Date:10/1/2014)... Irvine, CA (PRWEB) September 30, 2014 ... for user-friendly, cost-effective tools to address sales, training ... PMG has developed innovative mobile applications to ... studies, outlining the agency’s latest customized mobile app ... http://www.studiopmg.com/work . , In partnership with Toyota, ...
(Date:10/1/2014)... Ill. (PRWEB) October 01, 2014 The ... $9,956,011 to Southern Illinois University Edwardsville as part of ... (TAACCCT) initiative. The funding is co-administered by the Department ... Joe Biden, Secretary of Labor Thomas E. Perez and ... $450 million in job-driven training grants to nearly 270 ...
(Date:9/30/2014)... This news release is available in German . ... at the Technische Universitt Mnchen (TUM) have demonstrated a ... Their experiments show that future computer chips could be ... transistors. As the main enabling technology of the semiconductor ... fundamental limits, the TUM researchers and collaborators at the ...
Breaking Biology Technology:Markman Hearing Date for VTech and Uniden Litigation Now Set for November 10, 2014 2Digital Agency Studio PMG Launches New Case Studies on Website 2U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 2U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 3U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 4A new dimension for integrated circuits: 3-D nanomagnetic logic 2A new dimension for integrated circuits: 3-D nanomagnetic logic 3
... ... ... , , , ... ...
... ... web to cost effectively boost the pool of eligible patients for screening for any ... upload recruitment material approved by their Institutional Review Board (IRB), on their own specific ... ...
... ... ... ... ...
Cached Biology Technology:Spectral granted IDE approval by U.S. FDA to conduct pivotal trial for Toraymyxin(TM) 2Spectral granted IDE approval by U.S. FDA to conduct pivotal trial for Toraymyxin(TM) 3Spectral granted IDE approval by U.S. FDA to conduct pivotal trial for Toraymyxin(TM) 4RESolutions Rapid Enrollment Solutions, LLC Announces Launch of Novel Patient Recruitment Web Site - Clinical Trial Spotlight™ 2RESolutions Rapid Enrollment Solutions, LLC Announces Launch of Novel Patient Recruitment Web Site - Clinical Trial Spotlight™ 3China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 2China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 3China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 4China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 5China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 6China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 7