Soil Fungal Community Dynamics and Interactions

Soil fungal communities form intricate, dynamic networks that underpin nutrient cycling, plant health and ecosystem resilience. These communities comprise decomposers that break down organic matter, mutualists such as arbuscular mycorrhizal fungi (AMF) that exchange nutrients with plant roots, and pathogens that can limit plant growth. Spatially, fungi inhabit the bulk soil, the rhizosphere immediately surrounding roots, and the hyphosphere along mycorrhizal hyphae. Temporally, community composition shifts in response to seasonal changes, soil management and natural succession, with successional turnover influencing carbon and nitrogen fluxes. Fungal interactions—both cooperative and competitive—shape community assembly and functionality. Co-occurrence networks reveal that positive links among saprotrophs and symbiotrophs can accelerate decomposition and nutrient release, while negative links may suppress pathogens. Globally, these dynamics affect soil carbon sequestration, greenhouse gas emissions and crop productivity, making the study of fungal community interactions vital for climate mitigation and sustainable agriculture.

Research from Nature Portfolio

Recent work has revealed that abandoned agricultural lands undergoing ecological restoration develop tighter, more interconnected soil networks dominated by efficient carbon-cycling fungi, leading to enhanced soil carbon uptake without an increase in total fungal biomass. Complementary research has shown that multipartite synergies between AMF and soil microbial consortia can double plant nitrogen acquisition from organic sources, substantially boosting ecosystem nutrient retention. Long-term field experiments have further demonstrated that the application of organic manure over decades markedly alters soil chemistry and fungal community composition, increasing fungal diversity at fine taxonomic scales and reducing the prevalence of soil-borne pathogens, thereby highlighting the benefits of organic over chemical fertilisation for soil health and disease suppression.

Soil Fungal Community Dynamics and Interactions publication trend

The graph below shows the total number of articles in soil fungal community dynamics and interactions across all publications each year (not limited to Nature Index journals).

Technical terms

Rhizosphere: The soil zone directly influenced by root exudates and associated microbial activity.

Arbuscular mycorrhizal fungi (AMF): Symbiotic fungi that colonise plant roots, enhancing nutrient exchange between soil and plant.

Hyphosphere: The soil region surrounding and influenced by fungal hyphae beyond the rhizosphere.

Denitrification: Microbial process converting nitrate to gaseous forms of nitrogen, including N₂O.

Alpha diversity: The species richness or diversity within a single community or sample.

Beta diversity: The variation in species composition between communities or samples.

Co-occurrence network: A graphical representation of positive and negative associations among species within a community.

References

1. Soil networks become more connected and take up more carbon as nature restoration progresses. Nature Communications (2017).
2. Synergies between mycorrhizal fungi and soil microbial communities increase plant nitrogen acquisition. Communications Biology (2019).
3. Long-term fertilization alters soil properties and fungal community composition in fluvo-aquic soil of the North China Plain. Scientific Reports (2020).
4. Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics. iMeta (2023).
5. Mycorrhiza-mediated recruitment of complete denitrifying Pseudomonas reduces N2O emissions from soil. Microbiome (2023).
6. Mineral and Organic Fertilizers Distinctly Affect Fungal Communities in the Crop Rhizosphere. Journal of Fungi (2022).