Soil and root nutrient chemistry structure root-associated fungal assemblages in temperate forests

Area of Science:

• Ecology
• Mycology
• Soil Science

Background:

• Root-associated fungi (RAF) are crucial for nutrient cycling between soil and plant roots, impacting ecosystem functions.
• Factors influencing RAF community structure are not fully understood, hindering effective ecosystem management.

Purpose of the Study:

• To identify key environmental and root-related factors driving variation in RAF community structure.
• To understand the combined influence of soil properties and root traits on fungal communities.

Main Methods:

• Statistical models were applied to data from 150 temperate forest sites.
• Analysis encompassed a wide range of environmental conditions and root chemical traits.
• Fungal taxa were analyzed at the order level to identify response patterns.

Main Results:

• RAF community structure variation was significantly correlated with both soil properties (pH, cations, moisture, C/N) and root traits (cations, carbohydrates, nitrate).
• Distinct fungal orders exhibited unique responses to different biotic and abiotic factors.
• The interplay between soil and root factors explained the observed community variations.

Conclusions:

• RAF communities are shaped by a complex interplay of soil conditions and plant root characteristics.
• The drivers of RAF communities are context-dependent, reflecting the evolutionary adaptations of fungal lineages.
• Findings highlight the importance of considering both soil and plant factors for understanding and managing forest ecosystems.