Navigation Links
Hundreds of thousands of viral species present in the world's oceans

The ocean is full of life--large, small, and microscopic. Bacteriophage (phage) viruses are minute, self-replicating bundles that alter microorganisms' genetic material and moderate their communities through predation and parasitism. Despite their small size, they are astoundingly abundant with about as many of them in a bucket full of seawater as there are humans on the planet. As a result, they can have a huge impact ecologically.

In a new study published online this week in the open access journal PLoS Biology, Florent Angly, Forest Rohwer, and colleagues detail their metagenomic study of the diversity of bacteriophage present in water samples collected from 68 sites over 10 years from four oceanic regions (the Sargasso Sea, the Gulf of Mexico, British Columbia coastal waters, and the Arctic Ocean). They use pyrosequencing (a technique that enables collection of many DNA sequence reads for less cost than conventional sequencing) to large samples, rather than individual organisms to gain insights into diversity, geography, taxonomy, and ecosystem functioning. This approach identified tremendous viral diversity with greater than 91% of DNA sequences not present in existing databases.

Angly and colleagues analyzed the distribution of marine phages among the sampling sites and found a correlation between geographic distance and genetic distance of viral species, supporting the idea that the marine virome varies from region to region. They also investigated how similar the viromes from each location were--in fact, the differences were mostly explained by variations in relative abundance of the viral species, and supports the notion that although everything is everywhere, the environment selects.

Overall, they saw that samples from the British Columbia coast were the most genetically diverse (consistent with its nutrient-rich environment). The other three samples showed increasing diversity with decreasing latitude, a trend that parallels pr evious findings from terrestrial ecosystems. In fact, the researchers predict that the world's oceans hold a few hundred thousand broadly distributed viral species, with some species-rich regions likely harboring the majority of these species.
'"/>

Source:Public Library of Science


Related biology news :

1. One signal elicits thousands of answers
2. Ebola outbreaks killing thousands of gorillas and chimpanzees
3. Technique monitors thousands of molecules simultaneously
4. New binding target for oncogenic viral protein
5. Novel antiviral technology inhibits RSV infection in mice
6. NYU study reveals how brains immune system fights viral encephalitis
7. Antiretroviral therapy may prevent excess risk of some cancers in people with HIV
8. Stopping smallpox in its tracks: A new anti-viral approach
9. Study reveals candidate targets for anti-retroviral therapeutics
10. PHACCS, an online tool for estimating the structure and diversity of uncultured viral communities using metagenomic information
11. Chimp genome reveals a retroviral invasion

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/1/2016)... 1, 2016  Wocket® smart wallet ( www.wocketwallet.com ) announces the launch ... Joey Fatone . Las Vegas , where Joey ... --> Las Vegas , where Joey appeared at the ... new video ad was filmed at the Consumer Electronics Show (CES2016) in ... booth to meet and greet fans. --> ...
(Date:1/25/2016)... -- Glencoe Software, the world-leading supplier of image data management ... the data management solution OMERO Plus for the newly ... Photo - http://photos.prnewswire.com/prnh/20160125/325328LOGO ... Phenotypic analysis measures the characteristics and behavior of cells, ... such as health and disease, the presence or absence ...
(Date:1/20/2016)... -- A market that just keeps on growing. Molecular ... in genomics knowledge. Learn all about it in this ... dynamic trends are pushing market growth and company valuations. ... - pathogen evolution - next generation sequencing - emergence ... of the role of genetic material in Disease and ...
Breaking Biology News(10 mins):
(Date:2/4/2016)... , Feb. 4, 2016 Sinovac Biotech ... a leading provider of biopharmaceutical products in ... of its board of directors received on February 4, ... 2016, from a consortium comprised of PKU V-Ming ( ... Biomedicine Co., Ltd., CICC Qianhai Development ( Shenzhen ...
(Date:2/3/2016)... , Feb. 3, 2016  Discovery Laboratories, Inc. ... on developing aerosolized KL4 surfactant therapies for respiratory ... has approved an inducement award as a component ... its newly appointed President and Chief Executive Officer.  ... Committee on February 1, 2016 and granted as ...
(Date:2/3/2016)... ... February 03, 2016 , ... Aerocom, a world-leading supplier ... the North American healthcare market. , Aerocom Healthcare, LLC will be based in ... will provide new pneumatic tube systems or expand existing systems within the U.S. ...
(Date:2/3/2016)... , Feb. 3, 2016  Today, Symphony Technology ... AlphaImpactRx , a leading provider of primary research ... to IMS Health , a global information and ... offerings, capabilities and technologies will be integrated into IMS ... global primary market research capabilities. ...
Breaking Biology Technology: