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. 2018 Oct 16;12(1):51–54. doi: 10.1111/1751-7915.13325

Figure 1.

Figure 1

A primed leaf cell (upper left) under attack by bacterial pathogen (black cells) sends a cry for help to the roots, initiating defence signalling (envelopes). Roots in iron‐poor soil excrete scopoletin, enhancing niche establishment for P. simiae WCS417 (yellow cells). Illustration: G. J. Cho.