Weird Science

Is it really true that trees can “talk” to each other?

Can trees talk to each other

Do Trees Really Talk? Unraveling the Myths of Fungal Communication

Can trees communicate with each other through an intricate network of underground fungi? A new study challenges the widely held belief that trees exchange nutrients and information through a “wooden web” beneath the forest floor.

The Origins of the Communication Theory

The concept of fungal communication, involving an underground network of fungal threads carrying nutrients and information, emerged in the late 1990s. Researchers found that sugars and nutrients could flow between trees, and some traced fungi from one tree’s roots to another, suggesting potential communication channels.

Understanding the Fungi-Tree Relationship

Fungi, including molds and yeasts, cannot produce their own food through photosynthesis. Instead, they form a symbiotic relationship with trees and other plants, exchanging nutrients and water for food products. This led to the idea of a “wooden web” connecting tree roots, but the scientific evidence for this concept remains unproven.

Challenging the Mycorrhizal Network Theory

A team of researchers from the University of Alberta, the University of British Columbia, and the University of Mississippi analyzed over 1,500 scientific articles on common mycorrhizal networks (CMNs) that link the roots of multiple plants. Publishing their findings in Nature Ecology & Evolution, they questioned three popular claims about CMNs’ abilities.

Biologist Justine Karst explains that while CMN research has generated interest in forest fungi, many popular ideas are not backed by solid science.

The Problem with Unsupported Claims

The researchers found that unsupported claims about fungal networks’ benefits have doubled in the past 25 years. Their analysis revealed that there is almost equal evidence for CMNs helping, harming, or having no effect on seedlings.

The scientists acknowledge that some of these unsupported claims come from their own previous publications, noting that such unsubstantiated assertions can distort the public’s understanding of CMNs and affect forest management decisions.

The Importance of Accurate Information

Distorting the science behind CMNs can lead to misguided forest management practices and erode public trust in science, warns Karst. Only five studies have been conducted in two types of forests, covering just two of the estimated 73,300 tree species worldwide. Additionally, these studies cannot prove the permanence of fungal connections.

As researchers continue to investigate the complex relationship between trees and fungi, a clearer understanding of the reality behind the “wooden web” will emerge.

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