Coral reefs host unique microbes with medical potential

Scientists have discovered that coral reefs contain diverse communities of microbes, many previously unknown, that produce compounds with potential uses in medicine and biotechnology. The findings come from a large-scale study across the Pacific.

An international team examined microbiome samples from 99 coral reefs across 32 Pacific islands. They reconstructed the genomes of 645 microbial species, more than 99 percent of which had never been genetically described before. These microbes live closely with coral hosts and include a wider range of biosynthetic gene clusters than recorded elsewhere in the ocean.

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Illustration of a mother-daughter diving duo discovering the record-breaking J-shaped Pavona clavus coral colony on the Great Barrier Reef.
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Mother and daughter discover world's largest coral colony on Great Barrier Reef

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A mother-and-daughter duo of citizen scientists has uncovered the largest known coral colony on Australia's Great Barrier Reef, measuring 111 meters across and covering nearly 4,000 square meters. The J-shaped formation of Pavona clavus was found during a dive as part of the Great Reef Census initiative. Advanced 3D modeling confirmed its size, highlighting the role of community involvement in marine conservation.

New research indicates that rising ocean temperatures may benefit Nitrosopumilus maritimus, a microbe essential for marine nutrient cycles. This archaea adapts by using iron more efficiently in warmer, nutrient-poor conditions, potentially sustaining ocean productivity. The findings, published in the Proceedings of the National Academy of Sciences, suggest these microbes could play a larger role in ocean chemistry amid climate change.

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A team of international researchers has accused the US government of hastening the collapse of coral reefs around Guam through military expansions and proposed rollbacks to the Endangered Species Act. In a letter published in Science this month, they highlight how national security priorities are overriding conservation efforts. Without changes, these reefs face functional extinction similar to those in Florida.

A study from New York University Abu Dhabi has identified nighttime hypoxia as a key stressor for coral reef fish in the Arabian Gulf. This low-oxygen condition at night adds to concerns over extreme heat in the region. The research emphasizes an overlooked environmental threat to marine life.

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Researchers at MIT have discovered chemical evidence in rocks over 541 million years old suggesting that ancient sea sponges were among Earth's first animals. The findings, published in the Proceedings of the National Academy of Sciences, identify molecular fingerprints matching compounds from modern demosponges. This builds on earlier work and confirms the signals originate from biological sources rather than geological processes.

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