Navigation Links
MIT: Oceans are a major gene swap-meet for plankton

s are showing that all Prochlorococcus strains "are very closely related, yet they display quite an array of physiologies, and astounding genetic diversity on top of that," Chisholm said. It's becoming clear, too, that "this genetic diversity is at the heart of the extraordinary stability of Prochlorococcus in the oceans, which maintains steady population sizes over vast regions" of the sea.

The collective Prochlorococcus community merely adjusts internally, with different groups (genome types) waxing and waning in relative abundance, depending on who is most fit under ever-changing circumstances.

But how do they do it?

"We decided to let the cells tell us what is most important to them" by doing a systematic survey of relative abundances among six different types, or clades, of Prochlorococcus across vast environmental gradients in the oceans, Chisholm said. "We found first that two clades are orders of magnitude more abundant than all of the rest, and that temperature appeared to be very important in determining their distributions." Subsequent laboratory experiments with the cultured strains confirmed this idea.

Further analysis showed that most of the genetic differences between the two super-abundant strains are concentrated in a few "genomic islands," small zones where different kinds of genes get swapped in and swapped out, known among molecular geneticists as "hot spots" for gene exchange.

The distributors or carriers of new genes, they suspect, are the massive numbers of viruses also known to exist in seawater, some of which are adept at infecting ocean microbes such as Prochlorococcus. Such viruses, which carry genes of their own and sometimes transport odd genes picked up from an earlier host, are the most likely means of exchange - a natural way to get genes out of old cells and into new ones.

In essence, what all this means is that "our image of ocean microbes and their role in planetary maintenance is cha
'"/>

Source:Massachusetts Institute of Technology


Page: 1 2 3 4

Related biology news :

1. Oceans more vulnerable to agricultural runoff than previously thought, study finds
2. Oceans turning to acid from rise in CO2
3. Oceans are 70 percent shark free
4. Columbia research lifts major hurdle to gene therapy for cancer
5. Researchers uncover sequence of major rice pathogen
6. Emergence of cancer as major cause of childhood death in developing countries is not being adequately addressed
7. Biochemists report discovery of structure of major piece of telomerase; implications for cancer
8. Virologists make major step towards understanding the process of HIV infection
9. Biota makes major antiviral discovery
10. New gene scanning technology marks a major advance in disease research
11. LIAI scientists make major finding on potential smallpox treatment
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: MIT Oceans are major gene swap meet for plankton

(Date:10/15/2014)... , Oct. 15, 2014 Sandata Technologies, ... home and community-based care, today announced it released ... Sandata,s Santrax® Electronic Visit Verification™ Solution (EVV™)  for ... a home health company founded in 1996 and ... . The study details the ...
(Date:10/15/2014)... Gutenberg University Mainz (JGU) as a full member, ... maintain a significant nationwide standing in the field ... Johannes Gutenberg University Mainz as a full member ... national and international competition for the best minds ... be proud that Mainz University has been recognized ...
(Date:10/15/2014)... NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ("NXT-ID" or ... commerce market releases photos and video of the recent opening bell ... th . Gino Pereira , CEO of ... Mr. Chad A. Verdi rang the bell.  ... and employees "for their work and dedication in bringing the world,s ...
Breaking Biology News(10 mins):Sandata Announces Case Study with Quality Care Services, Inc. 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 3
... The lipid that accumulates in brain cells of individuals with ... is a hallmark of the disease, according to new research ... work provides the first evidence that a lipid can initiate ... a lipid called GM1-ganglioside. Lipids are fat-like molecules. GM1 builds ...
... new study from the University of Warwick has discovered taking ... can increase your cholesterol by almost 10%. Selenium is ... absorbs selenium from foods such as vegetables, meat and seafood. ... too much selenium, such as through taking selenium supplements, it ...
... food-savvy, label-conscious, calorie-aware - and still gaining weight ... still, today,s children run the risk of a ... in Circles About Obesity by Tarek Hamid brings ... humor and lively graphics, to the obesity debate. ...
Cached Biology News:Research reveals lipids' unexpected role in triggering death of brain cells 2Research reveals lipids' unexpected role in triggering death of brain cells 3Research reveals lipids' unexpected role in triggering death of brain cells 4Too much selenium can increase your cholesterol 2
(Date:10/20/2014)... PureTech , a science and technology development ... today the closing of a $55 million growth ... a $120 Billion group of funds. The funding ... forward and to advance new healthcare related products ... really go for the big ideas that can ...
(Date:10/20/2014)... Local veterinary surgeon, Dr. Tim McCarthy is seeking ... stem cells for dogs with osteoarthritis. Dr. McCarthy has ... clinical stem cell therapy for 7 years. The ultimate ... single injection of donor stem cells into one or ... inflammation in the treated joints. , Candidates for ...
(Date:10/19/2014)... , Oct. 19, 2014 NextCODE Health, which ... whole genome in real time, today announced the launch of ... NextCODE Exchange , at the American Society of Human Genetics ... To learn more, sign up and apply for free beta ... unique features and benefits can be viewed here . ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The Asia-Pacific ... Analytics market in Asia-Pacific with analysis and forecast of ... million in 2014 to $208 million by 2019, at ... 2014 to 2019. , Browse through the TOC of ... idea of the in-depth analysis provided. It also provides ...
Breaking Biology Technology:PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4
... develops and sells employee scheduling and management products. The ... and co-founder of Suite Scheduler, a former nurse manager ... employees in a facility. , ,Suite Scheduler products are ... up to 90% of the time to create and ...
... grant from the Ewing Marion Kauffman Foundation , ... cross-campus entrepreneurship in a national competition among 30 universities. ... by the Foundation to compete for further awards of ... , ,Provost Peter Spear and School of Business ...
... such as the Small Business Development Center, the Madison ... in Milwaukee and will also provide on-site assistance for ... , , T.E.C. Center, Inc. , is a nonprofit ... T.E.C. Incubator Center is a unique partnership between MATC ...
Cached Biology Technology:Scheduling made easy with Suite Scheduler 2Scheduling made easy with Suite Scheduler 3UW-Madison Receives Grant to Develop Entrepreneurship Proposal 2
... Designed specifically for high efficiency ... Low toxicity reagent proven to ... range of cell types. Results ... 95% of target gene expression. ...
... a wide range of hands-on techniques that ... in all areas of protein chemistry and ... preface illustrates just how valuable this book ... chapters introduce the theoretical background of a ...
... easy-to-use siRNA transfection reagent that has been ... a variety of cell lines. jetSI-ENDO is ... straightforward protocol. High levels of gene silencing ... of 20 to 100 nM of siRNA ...
... reduced space requirements of the MassARRAY ... analysis technology affordable .The benchtop system ... SEQUENOM's applications and assays, including: ,, ... Gene Expression Analysis (QGE) , Quantitative ...
Biology Products: