Next-Generation Proteomics Reveals a Greater Antioxidative Response to Drought in Coffea arabica Than in Coffea canephora

Drought is a major threat to coffee, compromising the quality and quantity of its production. We have analyzed core proteome 18 Coffea canephora cv. Conilon Clone 153 C. arabica Icatu plants assessed their responses moderate (MWD) severe (SWD) water deficits. Label-free quantitative shotgun proteomics identified 3000 proteins in both genotypes, but less than 0.8% contributed ca. 20% biomass. Proteomic changes were dependent on severity drought, being stronger under SWD with an enrolment different proteins, functions, pathways MWD. The two genotypes displayed stress-responsive SWD, only showed higher abundance involved antioxidant detoxification activities. Overall, impact MWD was minor contrary previous studies. In contrast, extensive proteomic response found having greater potential for acclimation/resilience canephora. This likely supported by wider antioxidative ability repair photosynthetic structures, crucial develop new elite that assure coffee supply scarcity levels.