Research shows jasmonic acid transfers via mycorrhizal networks in plants, suggesting new defenses against pathogens.
Common mycorrhizal networks (CMNs) formed by arbuscular mycorrhizal fungi interconnect neighbouring plants. New evidence from Zhang et al. demonstrates that CMNs transfer jasmonic acid from necrotrophic pathogen-infected to uninfected tomato plants, priming defence responses and recruiting disease-suppressive bacteria. These findings establish a key mechanistic link underlying CMN-mediated plant defence communication.
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Hernández et al. (2025) studied this question.
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