New Method Reversed Doomed Bleached Coral at Record Speed
Researchers found that beneficial algae moved into bleached coral within days and restored full color in seven weeks, but only when fragments were genetic clones.
- On Wednesday, Stanford University researchers published findings in Science Advances showing that bleached corals can fully recover through brief contact with healthy, genetically identical counterparts.
- Powerful laser microscopy revealed that coral tissues fuse shortly after contact, creating a "nutrient highway" that transfers life-giving algal symbionts and triggers recovery in just three days.
- Lead author Danny Collins assembled 10 pairs of cauliflower corals, finding that five days of contact enabled bleached fragments to recover fully within seven weeks.
- The technique requires genetically identical corals, or "genet," limiting real-world scale; Collins noted bleached corals "really shouldn't be thought of as a lost cause."
- Researchers are now exploring alternative ways to deliver beneficial algae without continuous contact; co-author Fiorenza Micheli stated these insights "open the door to what's possible and may lead to the breakthrough we need to accelerate reef restoration.
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Stanford Researchers Show Bleached Coral Recovers in Weeks Through Contact With Healthy Clones
Stanford lab tests found bleached Pocillopora damicornis fragments recover fully in seven weeks after one week of contact with healthy genetic clones. Symbiotic algae transfer through tissue fusion drives the rapid process, with algae doubling every four days inside the recipient. The Oct. 14 Science Advances study offers a new look at coral recovery potential.
Scientists discover a way to reverse coral bleaching at record speed
For the first time, scientists have observed bleached corals on the brink of death fully recover through brief contact with healthy clones. Ghostly white corals returned to full health in a laboratory setting within seven weeks, the fastest documented recovery to date, according to a study published in Science Advances.
Researchers from the American University of Stanford have found a promising experimental way to help white coral reefs recover within seven weeks, by placing damaged corals in direct contact with genetically identical, intact parts, allowing for the transfer of useful microalgae and nutrients.
American researchers have shown that contact with a healthy fragment is enough to cure a sick branch.
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