Arbuscular Mycorrhizal Fungi (AMF)
What are Arbuscular Mycorrhizal Fungi (AMF)?
Arbuscular Mycorrhizal Fungi (AMF) are naturally occurring soil fungi that form beneficial symbiotic relationships with the roots of most plant species.
These fungi colonise plant roots and extend into the surrounding soil through networks of microscopic filaments called hyphae. In exchange for sugars produced by the plant through photosynthesis, AMF help plants absorb water and essential nutrients such as phosphorus, nitrogen and micronutrients more efficiently.
Arbuscular mycorrhizal fungi are considered one of the most important biological components of healthy soils and play a crucial role in sustainable agriculture, ecosystem resilience and plant productivity.
How Do Arbuscular Mycorrhizal Fungi Work?
AMF create a mutually beneficial relationship between plants and soil:
A. Root Colonisation
The fungi attach to plant roots and develop specialised structures called arbuscules within root cells.
B. Nutrient Uptake
The fungal network extends beyond the root zone, allowing plants to access nutrients that would otherwise be unavailable.
C. Improved Water Absorption
AMF help plants access moisture from a larger volume of soil.
D. Soil Structure Enhancement
Fungal hyphae contribute to soil aggregation, improving soil stability and health.
E. Plant Stress Tolerance
Plants associated with AMF often show improved resilience to drought, nutrient deficiencies and environmental stress.
Why Arbuscular Mycorrhizal Fungi Matter
1. Improve Nutrient Efficiency
AMF increase the uptake of phosphorus and other important nutrients.
2. Enhance Drought Resistance
The fungal network helps plants access water more effectively.
3. Improve Soil Health
AMF contribute to healthy soil ecosystems and biological activity.
4. Support Sustainable Agriculture
They can reduce reliance on synthetic fertilisers and improve resource efficiency.
5. Increase Crop Performance
Many crops benefit from improved growth, establishment and resilience.
AMF in Agriculture
Arbuscular mycorrhizal fungi are found in many agricultural systems, including:
Arable farming
Horticulture
Fruit production
Forestry
Agroforestry
Regenerative agriculture systems
Common crops that benefit from AMF include:
Wheat
Maize
Barley
Soybeans
Vegetables
Fruit crops
Modern sustainable farming systems increasingly aim to encourage natural AMF populations through soil-friendly management practices.
Arbuscular Mycorrhizal Fungi in the UK
Interest in AMF is growing rapidly within UK agriculture due to:
Regenerative farming adoption
Soil health initiatives
Sustainable Farming Incentive (SFI) schemes
Reduced-input farming systems
Carbon farming programmes
Researchers and agronomists are increasingly studying how AMF can improve crop performance while reducing fertiliser dependency.
Arbuscular Mycorrhizal Fungi in Europe, USA & Globally
Europe
European agricultural research programmes actively investigate AMF as part of sustainable agriculture and soil restoration strategies.
United States
AMF research is widely used in conservation agriculture, regenerative farming and crop production systems.
Global
Globally, AMF are recognised as important contributors to food security, soil health and climate-resilient agriculture.
The FAO highlights soil biodiversity and beneficial microorganisms as essential components of sustainable food systems.
Arbuscular Mycorrhizal Fungi vs Mycorrhizal Fungi
Feature | Arbuscular Mycorrhizal Fungi (AMF) | Other Mycorrhizal Fungi |
|---|---|---|
Host Plants | Most agricultural crops | Often trees and woodland species |
Occurrence | Common in farming systems | Common in forests and natural ecosystems |
Agricultural Importance | Very high | Variable |
AMF are the most widespread type of mycorrhizal fungi in agricultural soils.
AMF vs Synthetic Fertilisers
Feature | AMF | Synthetic Fertilisers |
|---|---|---|
Source | Natural biological process | Manufactured input |
Nutrient Delivery | Enhances natural uptake | Direct nutrient supply |
Soil Health Impact | Positive | Can vary depending on use |
AMF complement nutrient management but do not completely replace fertilisers in most systems.
Benefits of Arbuscular Mycorrhizal Fungi
A. Improved Nutrient Uptake
Enhances access to phosphorus and micronutrients.
B. Better Water Efficiency
Supports crops during dry conditions.
c. Healthier Root Systems
Improves root development and plant establishment.
D. Enhanced Soil Structure
Promotes stable, biologically active soils.
E. Reduced Input Requirements
May reduce dependence on fertilisers and improve sustainability.
Challenges of Managing AMF
1. Intensive Cultivation
Frequent tillage can disrupt fungal networks.
2. Excessive Fertiliser Use
High phosphorus applications may reduce AMF activity.
3. Crop Selection
Some crop species benefit more from AMF associations than others.
4. Soil Health Dependency
Healthy soils are needed to support thriving AMF populations.
Careers Linked to Soil Biology & AMF Research
AMF knowledge is increasingly important across agriculture and environmental science:
Agricultural Roles
Agronomists
Crop consultants
Soil health advisors
Scientific & Research Roles
Soil scientists
Plant scientists
Microbiologists
Environmental Roles
Ecologists
Conservation specialists
Sustainability consultants
AgriTech & Innovation Roles
Regenerative agriculture specialists
Agricultural researchers
Soil monitoring specialists
Key Skills
Soil science knowledge
Plant biology understanding
Agricultural sustainability expertise
Research and data analysis
Environmental management awareness
Related Terms
Frequently Asked Questions (FAQs) on Arbuscular Mycorrhizal Fungi.
What are Arbuscular Mycorrhizal Fungi?
Arbuscular mycorrhizal fungi are beneficial soil fungi that form symbiotic relationships with plant roots.
What do AMF do for plants?
They help plants absorb nutrients and water more efficiently while improving resilience to environmental stress.
Why are AMF important in agriculture?
They support soil health, improve nutrient efficiency and contribute to sustainable farming systems.
Can AMF reduce fertiliser use?
AMF can improve nutrient uptake efficiency, potentially reducing fertiliser requirements in some systems.
Are AMF found naturally in soil?
Yes. They occur naturally in most healthy agricultural and natural soils.
How can farmers encourage AMF populations?
Practices such as reduced tillage, cover cropping and improved soil health management can support AMF development.
Useful Resources
FAO – Global Soil Partnership– International frameworks and data on soil health.
USDA – Soil Health Initiative– Practical guidance and assessment tools.
DEFRA – Soil Health and Sustainable Farming (UK)– Policy and land management resources.
CABI – Soil Science and Soil Health Research– Applied agricultural research.
Our World in Data – Soils and Land Use– Data on soils, agriculture, and sustainability.
European Commission – Soil Strategy for 2030– EU policy on soil protection.
Soil Association – Soil Health and Organic Farming– Practical advice for farmers.
The Soil Health Institute-Driving adoption of regenerative practices that boost efficiency, yield, drought resilience, water quality, carbon sequestration, and disease resistance for a thriving agriculture industry.
Natural Resources Conservation Service (NRCS)– Soil assessment and conservation tools.
The Sustainable Soils Alliance- Driving the sustainable management of UK soils within the space of a generation.
Learn the meaning of more essential agricultural terms with our easy-to-use Key Terms Glossary here
Looking for
JOBS?
