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A model for illustrating root endophytic bacteria L. fusiformis-mediated Cd detoxification in tomato plants. L. fusiformis-released acetic acid led to the increased bioavailability of rhizospheric and cell wall Fe. Moreover, high-level acetic acid also activated the JA signaling pathway to suppress root NO burst, thereby weakening Cd-induced Fe deficiency responses. These synergistic effects contributed to inhibit the IRT1-mediated Cd uptake in plants.
