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Fig. 1 | Phytopathology Research

Fig. 1

From: Host plant-derived benzoic acid interferes with 4-hydroxybenzoic acid degradation in the phytopathogen Xanthomonas campestris by competitively binding to PobR

Fig. 1

4-HBA is an essential metabolite in the phytopathogen Xanthomonas campestris pv. campestris. In Xcc, a unique chorismatase, XanB2, catalyzes shikimic pathway-derived chorismate into 4-HBA. Xcc can take up 4-HBA. Xcc also takes up 4-HCA and converts 4-HCA into 4-HBA via the hcaLHD cluster-encoding proteins. Xcc uses 4-HBA as a substrate to synthesize coenzyme Q8 (CoQ8) via the ubiABCDEFGHIJX cluster-encoding proteins. In presence of a high level of 4-HBA, Xcc can degrade 4-HBA via the pathway involving PobA-PcaABCDEF. PEP, phosphoenolpyruvic acid; E4P, erythrose 4-phosphate; 4-HBD, 4-hydroxybenzaldehyde; 4-HCA, 4-hydroxycinnamic acid; OHB, 3-octaprenyl-4-hydroxybenzoate; PCA, protocatechuic acid

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Phytopathology Research

ISSN: 2524-4167