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. 2020 Jun 30;5(3):e00811-19. doi: 10.1128/mSystems.00811-19

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Copyright © 2020 Gu et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

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FIG 1 — The interactions mediated by siderophores and nonsiderophore metabolites within the inoculated consortia and between the inoculated strains and the pathogen. Network diagram showing the strength and directionality of all pairwise interactions mediated by different metabolites between inoculated strains and the effect of inoculated strains on the growth of the pathogen in iron-rich (A) and iron-limited (B) conditions. The thickness of lines represents the strength of the facilitative or inhibitive relationships and red and blue colors highlight inhibitive and facilitative effects, respectively. Both nonsiderophore metabolite-mediated (C) and siderophore-mediated (D) interactions within the inoculated consortia affected the growth of pathogen in iron-limited conditions. Nonsiderophore metabolite effects cover the effects of all other secondary metabolites, except for siderophores, produced in the iron-limited supernatant. The abbreviations A2, A3, A6, 117, 140, and RS represent the inoculated strains QL-A2, QL-A3, QL-A6, QL-117, QL-140, and the pathogen R. solanacearum, respectively.