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Investigation of Plant Interactions Across Common Mycorrhizal Networks Using Rotated Cores

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Root separation modulates AMF diversity and composition in tomato-potato onion intercropping systems.

Musawar Ibrahim¹, Asad Ullah¹, Xinjie Pan¹

¹Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Department of Horticulture, Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China.

Frontiers in Microbiology

|March 27, 2025

Summary

Minimizing root separation in tomato/potato-onion intercropping enhances arbuscular mycorrhizal fungi (AMF) diversity and functionality. This agro-ecological strategy boosts soil health and nutrient dynamics for sustainable agriculture.

Keywords:

AMF CMNs intercropping plant-plant interaction root barrier soil microbial community

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Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

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Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

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Published on: March 13, 2014

Area of Science:

Soil microbiology and plant-microbe interactions.
Agroecology and sustainable agriculture.
Mycorrhizal symbiosis and plant physiology.

Background:

Plant-plant interactions significantly influence arbuscular mycorrhizal fungi (AMF) communities in the rhizosphere.
Tomato/potato-onion intercropping is a promising agro-ecological strategy for resource optimization.
The impact of root separation methods on AMF diversity in intercropping systems is not well understood.

Purpose of the Study:

To investigate the effects of different root separation methods on AMF diversity and composition in tomato/potato-onion intercropping and monoculture systems.
To determine how intercropping and root separation influence AMF community structure and abundance.
To provide insights for optimizing intercropping strategies to improve soil health.

Main Methods:

Utilized high-throughput Illumina MiSeq sequencing to analyze AMF diversity indices (Ace, Chao1, Shannon, Simpson).
Employed Principal Coordinate Analysis to evaluate AMF community structure.
Assessed AMF abundance via 18S rRNA gene quantification under various root separation treatments.

Main Results:

The non-separation mode yielded the highest AMF richness (Ace, Chao1 indices).
Intercropping altered AMF composition, decreasing Glomerales and Glomus while increasing Paraglomerales and Paraglomus, particularly under non-separation.
Root separation distinctly modified AMF community structure; intercropping increased AMF abundance in tomato but decreased it in potato-onion rhizospheres.

Conclusions:

Minimizing root separation in intercropping systems is crucial for enhancing AMF diversity and functionality.
Root interactions play a significant role in shaping AMF communities within intercropping systems.
Findings offer valuable insights for optimizing intercropping strategies to improve soil health and nutrient dynamics in sustainable agriculture.