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

rated using powerful analytic techniques developed and carried out by collaborators from the Max Planck Institute for Marine Microbiology in Bremen, Germany. Seawater samples were incubated with stable isotopes of carbon and nitrogen, then the cells in the samples were sorted by flow cytometry. A highly specific genetic probe was used to identify the UCYN-A cells among the "photosynthetic picoeukaryotes" separated out by the cell sorting equipment. Another key technique was nanometer-scale secondary ion mass spectrometry (nanoSIMS), which helped identify the associated cells and allowed researchers to quantify and image the carbon and nitrogen isotopes within individual cells.

"This combination of techniques is a great tool for microbiology because it couples phylogenetic identification with metabolic analysis," Thompson said. "We could see that the cyanobacteria were fixing the labeled nitrogen and transferring it to the host cells."

Genetic analysis of the host cell indicates its closest relative is the species Braarudosphaera bigelowii. In many species of prymnesiophytes, including B. bigelowii, the cells form external calcified plates, suggesting that the host cell in the symbiosis may have plates that are easily dislodged during processing of seawater samples. "That would be important, because cells with plates sink faster than other organisms, so the carbon they fix could end up being transported to the deep sea or the seafloor," Zehr said.

Zehr noted that it is very difficult to estimate the contribution of this symbiosis to global carbon and nitrogen cycles. Other algae are more abundant and probably much more important in terms of oceanic carbon fixation than the algal host in this symbiosis. But the cyanobacterial partner probably makes a significant contribution to global nitrogen fixation in the oceans, he said.

"Planktonic symbioses are very understudied and difficult to study, as the associations are often fragile
'/>"/>

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:12/24/2014)... in December 2014, the 1U™ app has helped ... remember their usernames and passwords through replacing the antiquated system ... people who have struggled to remember usernames and passwords, ... on redefining identity, announced today that it is offering the ...
(Date:12/22/2014)...  The 2014 Holiday Season may be the brightest ever ... that the long anticipated floodgates for consumer biometrics may ... smart phones, tablets, and wearable mobile devices that incorporate ... users with nearly 4.8 billion biometric devices by 2020.   ...
(Date:12/19/2014)... Dec. 18, 2014  23andMe, Inc., the leading personal genetics company, ... differences in genetic ancestry of individuals from across ... arrived more than four hundred years ago, the ... for peoples from different continents. This study illuminates how American ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4
... pioneer on synthetic biology who has engineered microbial "factories" ... drug and biofuel substitutes for gasoline, diesel and jet ... presented by the Heinz Family Foundation and carries with ... multiple titles, Keasling is the Associate Laboratory Director for ...
... research indicates marijuana-like compounds called endocannabinoids alter genes and ... placenta during pregnancy and may contribute to pregnancy complications ... edition of The Journal of Biological Chemistry ... lipid molecules produced by the body disrupts the movement ...
... A team of Australian researchers, led by University of Melbourne ... the risk of developing Autism Spectrum Disorder, ASD. Lead ... Engineering at the University of Melbourne said the test could ... "This test could assist in the early detection of ...
Cached Biology News:Jay Keasling wins Heinz Award 2Jay Keasling wins Heinz Award 3Jay Keasling wins Heinz Award 4Study implicates marijuana use in pregnancy problems 2Genetic test predicts risk for Autism 2
(Date:1/22/2015)... GEA Niro Soavi the leader in ... the PandaPLUS 2000, which is ideal for new applications ... cell disruption . This compact laboratory homogenizer is the ... food, food additives and ingredients as well as for ...
(Date:1/22/2015)... January 22, 2015 Crystal Diagnostics (CDx) Xpress ... it has received AOAC-PTM Certifications for the six non-O157 Shiga ... O145; collectively referred to as STEC or the “Big-6”) as ... forming unit (cfu) per 325 g of raw ground beef ...
(Date:1/22/2015)... 2015 Selexis SA, a serial innovation ... Banks (RCBs) used for drug discovery to commercial manufacturing, ... include Next-Generation Sequencing (NGS) data packages. The ... manufacturing by ensuring the integrity of the gene, validation ...
(Date:1/22/2015)... , Jan. 22, 2015   GenoSpace , a precision medicine ... to enable the broad use of genomic, imaging and other ... appointment of Michelle Munson , CEO of Aspera, an ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 "We ...
Breaking Biology Technology:GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2GenoSpace Expands Board with Appointment of Michelle Munson 2
... - Covance Inc. has promoted Wendel Barr to the ... Anthony Cork to the position of president, early development, ... move supports the regional decision-making employed by its clients ... Tony have become corporate senior vice presidents and also ...
... Plan of New Jersey and announced an investment to ... Insurance Corp., Delta Dental Plan of Michigan, The Guardian ... Providers (the dental subsidiary of UnitedHealth Group). , ,These ... to enhance a platform that allows dentists to submit ...
... with innovation and excitement on its closing day, focusing ... next-generation systems designed to protect and defend the national ... email services. In addition to an array of new ... next "big thing" in a morning panel devoted to ...
Cached Biology Technology:Covance Appoints Co-Presidents for Early Development Services 2DEMO 2003 Closes with Focus on Collaboration and Communication 2DEMO 2003 Closes with Focus on Collaboration and Communication 3DEMO 2003 Closes with Focus on Collaboration and Communication 4