Plate Nº 83 · recorded November 13, 2026
Biology & EvolutionReported finding
Lab Robots Grow Deep-Sea Microbes That Die at the Surface
A robotic lab system recreated deep-sea pressure and cold from seafloor to lab, recovering 34 microbial strains including one that can't grow at normal pressure.
By Nathan Brooks3 min read675 words
In brief
- Less than 1% of deep-sea microorganisms can be cultivated with conventional lab methods
- The DISCUSS platform recovered 34 microbial isolates, including high-pressure-dependent bacterium HP_SR10
- Tests used samples from a cold seep 1,300 meters (4,265 feet) beneath the sea
- The system kept a complex microbial community alive for 180 days
- Published in Nature Sensors, 2026; DOI: 10.1038/s44460-026-00128-x
Fewer than 1% of deep-sea microorganisms can be grown with conventional lab methods—so a robotic platform called DISCUSS set out to change that, and it has already recovered 34 microbial strains, including one that physically cannot grow at normal pressure.
Researchers at The University of Manchester and colleagues described the system in the journal Nature Sensors on a 2026 publication. Their core problem was simple: microbes adapted to crushing pressure and near-freezing water often die on the way up. When samples rise from the ocean floor, the rapid shift in pressure and temperature kills many of them before scientists can study a single cell.
The deep sea is the largest microbial habitat on Earth, and its residents have evolved unusual enzymes and molecules with potential uses in pharmaceuticals, new materials, food and energy. Most of that biological catalog has stayed locked away because researchers simply couldn't keep the organisms alive in a lab.
What does DISCUSS actually do?
The platform recreates and maintains deep-ocean conditions across the whole journey—from collecting samples on the seafloor to growing and isolating individual microbes in the laboratory.
It works by combining three components:
- Real-time environmental sensors that track pressure, temperature and chemical composition;
- A "digital twin"—a virtual model of the deep-sea environment that guides decisions;
- Robotic tools that make adjustments when conditions drift from the target.
Zhengguang Liu, a researcher at The University of Manchester, said: "Scientists have long struggled to grow many microorganisms found in nature under laboratory conditions, limiting our understanding of how they live and function. DISCUSS helps address this challenge by recreating and preserving the environments these microbes depend on."
Once the microbes began to grow, cameras and deep-learning software recognized individual microbial colonies. Robotic tools then picked and collected those colonies for further study—all without lifting them out of the high-pressure environment.
How was it tested?
The team trialed the system on samples from a cold seep 1,300 meters—about 4,265 feet—beneath the sea surface. That's roughly the height of four Eiffel towers stacked underwater.
The run produced 34 microbial isolates in total. Several appear significantly different from previously identified strains, according to the researchers. Two of the bacteria are adapted to high-pressure life, and one, named HP_SR10, depends on high pressure to grow. It can't be cultivated under normal atmospheric conditions at all.
The system also proved it can hold the line over time: it kept a complex community of microorganisms growing together for 180 days—six months—by continuously maintaining the conditions they needed.
Why does this matter beyond new species?
Deep-sea microbes play a role in global processes such as the carbon cycle. Carbon produced near the ocean surface can eventually sink into the deep ocean, but scientists still don't fully understand how microbes at those depths transform it. Being able to collect, grow and study a wider range of organisms under near-natural conditions gives researchers a way to attack that question directly.
Liu said the interdisciplinary design—environmental sensing, digital modeling and robotics working together—could extend well beyond this study. "By bringing together environmental sensing, digital modeling and robotics, we can study microbial life that has previously been difficult to access, while opening up new possibilities for exploring other extreme environments," he said.
The researchers say the same approach could eventually be adapted to even deeper parts of the ocean and to other extreme settings, such as high-temperature hydrothermal vents.
The findings are preliminary in the sense that 34 isolates is a small sample of a vast habitat, and the team hasn't yet characterized the potentially novel strains in depth. But the proof of concept is concrete: a microbe that refuses to grow at sea-level pressure is now alive and dividing in a laboratory.
Publication details: Jing-Chun Feng et al., "Closed-loop in situ isolation of deep-sea extremophiles through sensor-driven microenvironment preservation," Nature Sensors (2026). DOI: 10.1038/s44460-026-00128-x.
via phys.org/rss-feed/ (Source)
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Market editor covering companies, deals and strategy in general science news at SciBeat.
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