Communities of microbes (microbiomes), particularly in soils, can be startlingly diverse, with as many as 10,000 species in just a cup of material. Scientists are working to understand how microbiomes and their members respond to their environments. These processes can profoundly shape the properties and composition of soils.
In a pair of studies published in The ISME Journal, researchers investigated how different species of microbes interact with one another and exchange resources such as vitamins. The studies focused on corrinoids, the vitamin B12 family of nutrients. Many bacteria in the environment cannot produce these chemicals.
Focusing on a single type of nutrient enables the study of microbiomes in greater detail. The two studies further synergized by focusing on the same California grassland soil, allowing the researchers to generate a framework for understanding nutrient cycling in this system.
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