Evidence for resource transfer via common endophyte networks.
Waschk P, Spiegel P, Gessler A, Saurer M, Bock BM
Mycorrhizal Networks
The web of fungi threading through your garden soil is even more intricate than we knew — endophytes you've never heard of may be quietly ferrying nutrients between your tomatoes, herbs, and flowers right now.
We've long known that certain root fungi connect trees and plants in forests, letting them share resources underground. This study shows a whole other group of fungi — ones that live inside plant roots but aren't mycorrhizae — can do the same thing, forming their own hidden networks that move nitrogen, carbon, and water between separate plants. One of these fungi made plants grow 38% bigger by channeling nutrients through the network, which suggests these invisible connections are far more common and important in gardens and wild landscapes than anyone realized.
Key Findings
Three phylogenetically diverse endophytic fungi (Trichoderma viride, Mucor hiemalis, and Fusarium temperatum) all formed common endophyte networks (CENs) capable of transferring isotope-labeled nitrogen, carbon, and water between physically separated donor and receiver plants.
Fusarium temperatum boosted receiver plant growth by 38% relative to uninoculated controls and enriched plant 15N content from amino acids by 55%, demonstrating functionally significant resource transfer.
Trichoderma viride transferred amino acid-derived 13C from donor soil to receiver plant tissues (+2.83% above control), and all three endophytes shifted their transfer behavior when connecting two hosts versus one, showing network-level responses distinct from single-plant symbiosis.
chevron_right Technical Summary
Scientists discovered that common soil fungi living inside plant roots — called endophytes — can form underground networks between plants and shuttle nitrogen, carbon, and water through those connections, much like the better-known mycorrhizal networks. One fungus boosted plant growth by 38% and dramatically increased nitrogen uptake through these shared pathways.
Abstract Preview
Fungal symbionts play essential roles in ecosystems influencing plant development and biodiversity. Mycorrhizal fungi can form common mycorrhizal networks (CMNs) where a fungus connects the roots o...
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