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Viruses could be the key to healthy corals
Date:8/30/2012

cle of healthy corals. In the test group, the researchers injected the virus into the area at a concentration of 1000 per milliliter. The control group did not receive the virus.

After 24 hours, the difference in the outcome was highly significant, says Prof. Rosenberg. In the test group, the infection of the diseased coral ceased its progression, and the disease did not spread to the surrounding healthy corals. In the control group, however, the White Plague disease progressed rapidly in the original infected coral and spread to seven out of ten of the surrounding healthy corals.

Amplifying a natural process

One of the most surprising discoveries during the course of their research, says Prof. Rosenberg, was that some corals naturally posses the beneficial virus and are already resistant to infection by the pathogen. When the researchers tested the three corals in the control group that remained uninfected, they discovered that the virus was already present in their biological composition. "We found that this is a natural process that goes on all the time. What we are doing is only shifting the situation in favor of the virus," he explains.

This method of developing an antidote to specific pathogenic coral bacteria is a crucial breakthrough, Prof. Rosenberg says. Corals in different regions of the world are infected with different pathogens. For each location, it is necessary to isolate the appropriate virus. But microbiologists should be able to develop regionalized treatments based on the methods used by Prof. Rosenberg and his fellow researchers.

The next step is to develop an effective way to spread the viruses over large areas of an infected coral reef. Sufficient amounts of these viruses can be easily manufactured in the laboratory. After that, it's a question of technology and funding, Prof. Rosenberg adds.


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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert

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