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One billion times the distance from the Earth to the sun: First global map of mycorrhizal fungi reveals true scale of underground networks across the planet

Researchers created the first global maps of arbuscular mycorrhizal fungi's distribution and mass, estimating ~110 quadrillion kilometers of network length and ~300 megatons of carbon. The networks support plant life and regulate climate by drawing in CO2 from atmosphere.

SourceSociety for the Protection of Underground Networks·JournalScience·TypeData/statistical analysis·DateJun 11, 2026

Resource allocation trade-offs and rewired mycorrhizal networks uncover ex situ adaptation mechanism of Paphiopedilum purpuratum

A novel study in Biological Diversity reveals the integrated physiological and symbiotic adaptation mechanism underlying P. purpuratum's ex situ conservation. The research demonstrates that ex situ conservation elevates seed-set rates but incurs trade-offs in photosynthetic capacity and oxidative stress.

SourceSouth China Botanical Garden, Chinese Academy of Sciences·JournalBiological Diversity·TypeExperimental study·DateApr 24, 2026

How an underground fungal map of the world’s oldest, slowest-growing rainforest trees can boost the resilience of Earth’s long-term carbon sinks

Scientists discovered that a single, 2,400-year-old alerce tree protects hundreds to thousands of underground fungal species. These fungi help forests function by funneling water and nutrients to trees and assisting plants in fighting stressors like drought and pathogens.

SourceSociety for the Protection of Underground Networks·JournalBiodiversity and Conservation·TypeData/statistical analysis·DateMar 3, 2026

Over 70% of global ecosystems remain unsampled for critical underground fungi

A recent study analyzed environmental DNA from the largest global dataset of arbuscular mycorrhizal fungal and found a striking gap: more than 70% of ecoregions lack sequencing data. This underrepresentation threatens biodiversity surveys, plant productivity, soil aggregation, and climate mitigation predictions.

SourceSociety for the Protection of Underground Networks·JournalFEMS Microbiology Letters·TypeData/statistical analysis·DateFeb 25, 2026

Deadwood brings wild orchids to life

A study by Kobe University discovered that wild orchid seeds require fungi from decaying logs to germinate. The team found a consistent association between young and adult plants with coral-shaped rhizomes and wood-decaying fungi, suggesting an essential role for these fungi in the orchid's nutritional needs.

SourceKobe University·JournalFunctional Ecology·TypeExperimental study·DateOct 8, 2025

SPUN launches Underground Atlas: First global map of fungal biodiversity reveals 90% conservation gap

The SPUN Underground Atlas reveals that over 90% of mycorrhizal biodiversity hotspots lie outside protected areas, emphasizing the need for conservation efforts. The digital map provides insights into fungal diversity and environmental factors, enabling predictions for previously unmapped regions.

SourceSPUN (Society for the Protection of Underground Networks)·JournalNature·TypeData/statistical analysis·DateJul 23, 2025

Mysterious fungi: Researchers pinpoint hotspots of “dark taxa” across Earth’s underground ecosystems

A new study reveals that 83% of ectomycorrhizal fungi are dark taxa, meaning they can't be linked to named or described species, posing problems for conservation efforts. The discovery highlights the importance of protecting these underground fungi, which regulate Earth's climate and ecosystems.

SourceSPUN (Society for the Protection of Underground Networks)·JournalCurrent Biology·TypeLiterature review·DateJun 9, 2025

New ‘shy’ fungus found in old-growth forest

Researchers have discovered five new species of fungi in the Piloderma genus, including one rare species found only in old-growth forests. The discoveries suggest that diversity in this genus is greater than previously thought and highlight the risk of species disappearance as forests are logged.

SourceUppsala University·JournalFungal Biology·TypeObservational study·DateMar 18, 2025

New hypothesis sheds light on global forest biodiversity maintenance

Researchers propose a new biological hypothesis that combines tree dispersal modes and mycorrhizal types to explain the latitudinal variation in forest biodiversity. Advanced spatial analysis techniques reveal a negative aggregation–abundance relationship, stronger in temperate forests, which is linked to animal seed dispersal and myco...

SourceChinese Academy of Sciences Headquarters·JournalNature·TypeExperimental study·DateFeb 27, 2025

Scientists build robot to track plant-fungal trade networks, revealing nature’s underground supply chains

Researchers discovered that fungi construct a lace-like mycelial network that moves carbon outward from plant roots in a wave-like formation. The team used advanced robotics to measure traffic flows and resource trading in the fungal road system, shedding light on how these networks regulate ecosystem function.

SourceSPUN (Society for the Protection of Underground Networks)·JournalNature·TypeObservational study·DateFeb 26, 2025

Fungi’s hidden power: How fungal biomass holds carbon in soil across ecosystems for millennia

This study explores fungal biomass's role in stabilizing carbon in soils, showing a strong correlation between microbial biomass and reactive mineral-associated carbon. Fungal necromass interacts with nanoparticles to further stabilize the carbon after death, proposing a new conceptual model for hypha-mineral interactions.

SourceScience China Press·JournalScience China Earth Sciences·DateFeb 7, 2025

Plants more likely to be ‘eavesdroppers’ than altruists when tapping into underground networks

A new study led by University of Oxford suggests that plants are more likely to be eavesdroppers than altruists when tapping into underground networks. The study found that it is unlikely that plants would evolve to warn other plants of impending attacks, instead finding that plants may signal dishonestly to harm their neighbors.

SourceUniversity of Oxford·JournalProceedings of the National Academy of Sciences·DateJan 22, 2025

Do soil microbes affect flowers’ ability to attract bees?

Research reveals that certain soil microbes can enhance flower size, resulting in increased bee visitations, but high colonization levels may lead to smaller flowers. The study focuses on arbuscular mycorrhizal fungi associations with plant roots and their impact on floral traits and pollinator interactions.

SourceWiley·JournalNew Phytologist·DateDec 4, 2024

Tropical forests adjust strategies to thrive even when soils are nutrient poor

A new study suggests that tropical forests can overcome the challenge of scarce nutrients by adjusting their strategies for acquiring phosphorus. Forests of different ages respond differently to nutrient additions, with younger forests investing in nitrogen-based strategies and older forests relying on phosphatase to access phosphorus.

SourceCary Institute of Ecosystem Studies·JournalNew Phytologist·TypeExperimental study·DateJun 6, 2024

Climate change is moving tree populations away from the soil fungi that sustain them

A study found that climate change is shifting tree populations away from mycorrhizal fungi, which supply plants with critical nutrients. Trees in the pine family are most at risk, and those that survive in harsh conditions have more diverse fungal partners.

SourceSPUN (Society for the Protection of Underground Networks)·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateMay 27, 2024

Fungal-rich soil may improve green roofs

A Dartmouth-led research team created an experimental green roof to test the effect of native prairie microbes on soil microbial community development. Their findings demonstrate that active management accelerates soil development faster than passive reestablishment, fostering a more diverse and sustainable soil community.

SourceDartmouth College·JournalNew Phytologist·TypeExperimental study·DateJan 31, 2024

Soil fungi may help explain the global gradient in forest diversity

Researchers found that mycorrhizal fungi form mutually beneficial relationships with plant roots, improving juvenile survival and promoting species diversity. The study suggests that these symbiotic relationships between plants and fungi may play a role in driving global patterns of forest tree diversity associated with latitude.

SourceUniversity of Maryland Baltimore County·JournalCommunications Biology·TypeData/statistical analysis·DateJan 5, 2024

Inoculation against diseased fields

Researchers found that mycorrhizal fungi can significantly improve crop yields by up to 40% in fields with high levels of fungal pathogens. The inoculation was most effective when the soil had already been contaminated with pathogens, serving as a protective shield against further damage.

SourceUniversity of Zurich·JournalNature Microbiology·TypeExperimental study·DateNov 30, 2023

Plants allocate enough carbon to underground mycorrhizal fungi equivalent to roughly one-third of carbon emitted yearly by fossil fuels

Researchers found that plants allocate a significant amount of carbon to mycorrhizal fungi, equivalent to roughly one-third of carbon emitted yearly by fossil fuels. This discovery highlights the importance of understanding fungal networks in soil ecosystems and their role in mitigating climate change.

SourceCell Press·JournalCurrent Biology·TypeExperimental study·DateJun 5, 2023

Ancestral mitoviruses discovered in mycorrhizal fungi

Researchers have identified a new group of mitochondrial viruses confined to arbuscular mycorrhizal fungi Glomeromycotina, which may represent an ancestral lineage of mitoviruses. These large duamitoviruses possess distinct characteristics and are globally distributed in ecological niches occupied by glomeromycotinian fungi.

SourceHokkaido University·JournalmBio·TypeExperimental study·DateMay 11, 2023

Do forest trees really “talk” through underground fungi?

Researchers found no strong evidence that underground fungal networks, known as common mycorrhizal networks (CMNs), offer benefits to trees and their seedlings. While CMNs exist, there is limited understanding of their structure and function in the field, leading to questionable claims about resource transfer and seedling survival.

SourceUniversity of Alberta·JournalNature Ecology & Evolution·TypeLiterature review·DateFeb 13, 2023

Scientists return from expedition after mapping fungal networks on world’s most remote island

Researchers from SPUN mapped the diversity of mycorrhizal fungi across Palmyra Atoll, finding unique nutrient feedback loops that support rainforests, plankton communities, and coral reefs. The study highlights the importance of these underground networks in maintaining ecosystem resilience to climate change.

Understanding the cryptic role fungi play in ecosystems

Researchers analyzed over 4,500 documents to understand fungal dispersal across spatial scales. They identified four scales of movement, from microscopic to landscape, and found that climate change affects where fungi reside. More data is needed to understand the biodiversity of fungi and their movement in ecosystems.

SourceDartmouth College·JournalAnnual Review of Ecology Evolution and Systematics·TypeLiterature review·DateDec 5, 2022

The secret of mycorrhizal fungi

Researchers found that forest trees with a mix of both ectomycorrhiza and arbuscular mycorrhiza had the greatest tree diversity, contradicting previous beliefs. This discovery highlights the importance of considering the coexistence of different mycorrhizal strategies in promoting plant biodiversity.

SourceUniversity of Montreal·JournalNature Ecology & Evolution·DateFeb 24, 2022

The secret drivers of tree growth

Researchers found that fungal communities play a key role in tree growth, with some species increasing tree growth rates up to a tree-fold. The study suggests that using specific fungal communities can help improve forestry and potentially absorb more carbon from the atmosphere.

SourceETH Zurich·JournalThe ISME Journal·DateJan 11, 2022

Lifting the veil over mysterious desert truffles: Terfezia’s ecology and diversity towards cultivation

Researchers from the University of Évora discovered seven new species of Terfezia fungi in Portugal, including two previously unknown to science. The study provides valuable insights into their ecological range and potential hosts, enabling the development of truffle cultivation techniques that can positively impact local communities.

SourcePensoft Publishers·JournalMycoKeys·DateOct 28, 2021