In a rhythmical revelation, researchers have discovered that fungi in the soil not only listen but also dance to the vibes of soundwaves. 

A pioneering eco-acoustic study has unearthed potential for boosting ecosystem recovery, improving fresh food production, and even fine-tuning composting processes with nothing but the power of noise.

At the heart of the project is the finding that certain soil fungi show a remarkable growth spurt when exposed to soundwaves in a controlled environment. 

“More than 75 per cent of the world’s soils are degraded, so we need to take radical steps to reverse the trend and start restoring biodiversity,” says Dr Jake Robinson, a microbial ecologist at Flinders University.

“This research surprised us when one common plant growth-promoting fungi increased its initial number of spore cells biomass by almost five times compared to the control group where soundwaves were at ambient levels.

“Our study also highlights the importance of soundscapes in nature. We can now listen to the sounds [of] tiny animals as an indicator of soil health, but we might also be able to apply sound to improve soil health.”

The study's method was as unconventional as its findings – employing ordinary teabags buried in soundproof boxes to measure fungal growth. 

These teabags, subjected to 'loud' high-pitched monotone soundwaves of about 80 decibels at an 8 kHz frequency for up to eight hours a day over a fortnight, became the stage for a microscopic dance party. 

The results revealed a fungal biomass boom, with a notable performer, Trichoderma harzianum, increasing its spore cell biomass almost fivefold compared to the quieter control group.

Experts have speculated on the mechanics, suggesting that microbes might be converting soundwave energy into an electrical charge, sparking their activity. 

With the global push towards ecosystem restoration, particularly under the United Nations Decade on Ecosystem Restoration (2021-2030), such discoveries could be pivotal. 

Associate Professor Martin Breed, a co-author of the study, elaborates on the broader implications; “Our lab’s studies into restoration ecology are paving the way for improved native vegetation regrowth – including the reintroduction of lost species”, he said.

The pre-print article, Sonic restoration: Acoustic stimulation enhances soil fungal biomass and activity of plant growth-promoting fungi (2024) is being peer reviewed ahead of publication. The preview is available on the preprint server for biology