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Elevated growth [CO₂] enhances heat stress resistance of photosynthesis in young leaves of avocado (Persea americana)
(Estonian University of Life Sciences, 2025) Abiola, Yusuph Olawale; Sulaiman, Hassan Yusuf; Kaurilind, Eve; Niinemets, Ülo
Description: Data of gas exchange at control and recovery measured after heat stress in young-mature and old-mature leaves of avocado at multiple timepoints under two CO₂ regimes. Methods: Young-mature and old-mature leaves of avocodo trees grown at either ambient (400 µmol mol⁻¹) or elevated [CO₂] (800 µmol mol⁻¹) were exposed to 48°C for 10 mins and recovery of gas exchange parameters were assessed at 0.25, 1, 3, 24, 48 h. All the measurement were carried out at 390 - 410 ppm. The chamber T was set at 24 C and leaf T was +-1 C of chamber T. Outliers Handling: During data processing, the measurement for the Young-mature 800 (µmol mol⁻¹) Control treatment at timepoint 0.25h was identified as biologically unrealistic and was excluded from the analysis, as it likely reflected data irregularity. For this timepoint, the mean was calculated from the remaining four Control timepoints.