Is it possible for creatures lacking a brain to exhibit intelligence? This topic prompted researchers at Tohoku University and Nagaoka College to examine the decision-making processes in fungus. This degree of primitive cognition is achievable even in fungus, even though it may seem like science fiction.
Their findings were published in the journal Fungal Mycology.
You’d be surprised at just how much fungi are capable of,
They have memories, they learn, and they can make decisions. Quite frankly, the differences in how they solve problems compared to humans is mind-blowing.
Yu Fukasawa
Spores are released by fungi, and if they germinate, they can develop into long, subterranean threads called myceliums. Usually, we are only aware of the microscopic mushrooms that are visible on the surface, not understanding that a large web of interwoven mycelium lies beneath our feet. Similar to the neuronal connections in the brain, information may be transferred through this network.
In this work, the response of a wood-decaying mycelial network to two distinct configurations—wood blocks arranged in a cross and a circle was investigated. For instance, in the absence of decision-making abilities, the fungus would just disperse from a central location without taking the blocks’ positions into account. Surprisingly, the researchers did not see this.
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The degree of connectivity was higher in the outermost four blocks of the cross configuration. More dense connections were thought to be necessary because the outermost blocks may act as “outposts” for the mycelial network to go on foraging trips. The degree of connectedness in the circle pattern was constant at every block. The circle’s dead centre, nevertheless, continued to be visible. It was suggested that the mycelial network saw little advantage in expanding too far into an area that was already densely occupied.
These results imply that the mycelial network was able to transmit information about its environment to every node in the network and adjust its growth direction in response to changes in shape.
Our understanding of the enigmatic realm of fungus is restricted, particularly in contrast to our familiarity with plants and animals. This study will contribute to our understanding of the functioning of biotic ecosystems and the evolution of various forms of cognition in living things.
Source: Tohoku University – News
Journal Reference: Fukasawa, Yu, et al. “Spatial Resource Arrangement Influences Both Network Structures and Activity of Fungal Mycelia: A Form of Pattern Recognition?” Fungal Ecology, vol. 72, 2024, p. 101387, DOI: https://doi.org/10.1016/j.funeco.2024.101387.
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