A bacterial treatment for coral stopped or slowed 68 per cent of infections with stony coral tissue loss disease in the lab, and it prevented the spread of the disease as well
“It’s creating what are essentially open wounds in the corals that eventually will spread and consume the coral until all you have left is a skeleton,” says
at the University of North Carolina Wilmington. But Ushijima and his colleagues noticed that, even when infected, some fragments of great star coral never got sick. They collected samples of 222 bacterial strains on those disease-resistant fragments and found 83 had some antimicrobial activity, including a strain called McH1-7 that was particularly active.When the researchers dosed live corals with McH1-7 and tented them inside a plastic bag, they found the probiotic treatment stopped or slowed the progression of SCTLD in 68 per cent of 22 infected coral fragments.
“More amazingly, it seems to protect healthy corals from infection,” says Ushijima. In their 12 lab trials, the probiotic prevented SCTLD from spreading to healthy corals, something antibiotics are not able to do. Because stony coral species are numerous and diverse, “it’s likely each species will need its own treatment”, says Ushijima.
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