Assessment of recovery dynamics of physiological and biochemical indicators in leaves of pedunculate oak (Quercus robur) following heat shock
Year: 2025
Type: article
Abstract: The leaves of pedunculate oak (Quercus robur L.) were collected from the Plaiul Fagului Reserve, representing provenances from Edineț (north), Hârjauca (center), and Baimaclia (south). The study assessed the recovery dynamics of the chlorophyll index, the maximum relative yield of PSII, and the levels of phenols, tannins, and water in the leaves following thermal shock (50°C for 20 and 40 minutes). Over the ten-day recovery period, the chlorophyll index displayed low and variable values, with an increasing trend along the south-to-north gradient, suggesting more pronounced senescence processes in the leaves from Baimaclia. The Edineț provenance stood out with a significantly higher chlorophyll index and slightly elevated levels of the maximum relative yield of PSII, phenolic compounds, tannins, and leaf water content compared to the other provenances, indicating a more effective adaptation to thermal shock. Distant provenances, Edineț and Baimaclia, exhibited more pronounced adaptive responses compared to Hârjauca, which is geographically closer to the cultivation site
Authors: Petru Cuza, Nina Zdioruc, Nicolai Platovschii
Institution: Moldova State University
Language: English
Subfield: Plant Science
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W4411484201