The Effects of Drought and Re-Watering on Non-Structural Carbohydrates of Pinus tabulaeformis Seedlings.

ABSTRACT: Intense and frequent drought events strongly affect plant survival. Non-structural carbohydrates (NSCs) are important "buffers" to maintain plant functions under drought conditions. We conducted a drought manipulation experiment using three-year-old Pinus tabulaeformis Carr. seedlings. The seedlings were first treated under different drought intensities (i.e., no irrigation, severe, and moderate) for 50 days, and then they were re-watered for 25 days to explore the dynamics of NSCs in the leaves, twigs, stems, and roots. The results showed that the no irrigation and severe drought treatments significantly reduced photosynthetic rate by 93.9% and 32.6% for 30 days, respectively, leading to the depletion of the starch storage for hydraulic repair, osmotic adjustment, and plant metabolism. Th

SUBMITTER: Guo X 

PROVIDER: S-EPMC8066268 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature