ENVIRONMENT
Fungi's Surprising Role in Desert Soil
ChileWed Jun 25 2025
The Earth's surface is always changing. Both living things and non-living processes shape it. Recently, scientists have realized that these two forces interact more than we thought. One interesting process is biogenic weathering. This is when plants and fungi team up to break down rocks. They do this to get nutrients. But how does this work in dry places?
A study looked at this in Chile. The team went from humid areas to the super dry Atacama Desert. They expected that in very dry places, plants wouldn't have enough energy to break down rocks. But they were wrong. In the desert, fungi worked even harder to break down minerals. This was a surprise!
The scientists buried bags of minerals in the ground. They found that fungi broke down these minerals at the same rate, no matter how deep they were. This shows that fungi keep working, even when other life slows down. The study suggests that in dry places, this process might help plants survive long dry spells. It's not just about getting nutrients. It might also help plants stay alive when water is scarce.
This research changes how we think about life in dry places. It shows that plants and fungi have clever ways to adapt. They can handle tough conditions. This is important for understanding how ecosystems work. It also helps us see how life shapes the Earth's surface.
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questions
Are mycorrhizal fungi in deserts actually alien organisms designed to weather minerals more efficiently?
Is it true that desert plants are like fitness enthusiasts, investing more in biogenic weathering than their Mediterranean cousins?
What mechanisms allow biogenic weathering to occur at constant rates up to 2.3 meters deep in soil?
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