This study investigates stress-specific patterns of protein carbonylation and proteome re-modelling in potato leaves subjected to drought, elevated temperature, and their combina-tion. The research was conducted at the Department of Potato Agronomy of the Plant Breeding and Acclimatization Institute – National Research Institute. The Polish potato cultivar Solanum tuberosum L. ‘Lech’, known for its sensitivity to soil drought, was used in the study.Two weeks after tuber initiation (approximately BBCH 40), plants were subjected to four experimental treatments for a duration of 14 days: Control (C): maintained optimal hydration (70% field water capacity, FWC) and standard temperature conditions (20/16°C day/night). Drought (D): water withheld to reach and maintain 40% FWC at 20/16°C. Elevated Temperature (HT): plants exposed to 38/25°C (day/night) under optimal hydration (70% FWC). Combined Stress (D+HT): plants exposed to 38/25°C (day/night) with water withheld to 40% FWC.