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Enzymatic and proteic changes in resistant and susceptible cacao clones revela distinct response mechanisms to Phytophthora citrophthora infection

ABSTRACT: This study employed enzymatic analyses and gel-free comparative proteomics to elucidate contrasting defense strategies in cacao cultivars differing in resistance to black pod rot disease. Enzymatic assays indicated that 24 h after inoculation represented the time point with the strongest contrasts in antioxidant responses and was therefore selected for proteomic analysis. The resistant clone displayed extensive proteomic reprogramming, including proteins involved in redox homeostasis, carbohydrate metabolism, photosynthetic adjustment, and stress signaling, reflecting coordinated activation of defense mechanisms. In contrast, the susceptible clone showed limited proteome plasticity, suggesting impaired system-level responses and enhanced cellular vulnerability to infection.

INSTRUMENT(S): 6545 Q-TOF LC/MS

ORGANISM(S): Phytophthora Citrophthora (ncbitaxon:4793)

SUBMITTER: Ronan Xavier Correa

PROVIDER: MSV000100747 | MassIVE | Fri Feb 06 06:04:00 GMT 2026

REPOSITORIES: MassIVE

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