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Scientists Uncover Ancient Microbes in Deep Soil

Apr 11, 2025
By Farms.com

MSU Team Finds New Microbes Thriving 70 Feet Below Surface

In an important discovery, Michigan State University researchers found a new type of microbe in Earth's deep soil layers. These microbes, named CSP1-3, were identified from samples taken in Iowa and China, revealing a global presence in similar soil environments.

The study was led by Dr. James Tiedje, an expert in microbiology and soil science. He highlighted that CSP1-3 is an entirely new phylum, or group, of microbes. These microbes originally lived in aquatic places like hot springs and gradually adapted to life in topsoil and eventually deep soil.

What makes this discovery unique is that CSP1-3 microbes are not only present but are highly active and dominant in deep soil layers. In some cases, they form up to half of the microbial community — a rare occurrence underground. Their activity shows that life thrives far below the surface.

Tiedje explained, “CSP1-3 are the scavengers cleaning up what got through the surface layer of soil. They have a job to do.” Their role in breaking down carbon and nitrogen helps purify water as it moves through deep layers of soil, making Earth’s soil a powerful natural filter.

Researchers now aim to grow these microbes in laboratory settings by replicating their original environments, such as high temperatures. This could help scientists explore their potential for breaking down pollutants and improving soil health.

This discovery opens new doors for environmental science, offering hope for using ancient microbes to solve modern problems related to water quality and agriculture.

 


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