ArticlePlant, cell & environment2021
Drone-based physiological index reveals long-term acclimation and drought stress responses in trees.
Article in Plant, cell & environment, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 60 citations in OpenAlex.
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- Uptake and physiological impacts of nanoplastics in trees with divergent water use strategies.Environmental science. Nano · 2024Article
- Integrity of xylan backbone affects plant responses to drought.Frontiers in plant science · 2024Article
- Assessment of soil quality in an arid and barren mountainous of Shandong province, China.Scientific reports · 2023Article
- Plant physiological indicators for optimizing conservation outcomes.Conservation physiology · 2023Article
- Article
- Drone-based physiological index reveals long-term acclimation and drought stress responses in trees.Plant, cell & environment · 2021Article
- Early Autumn: Drought Accelerates Leaf Senescence in Temperate Tree Species.Physiologia plantarumArticle
Corrections and comments
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Authors and funding
11 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Monitoring early tree physiological responses to drought is key to understanding progressive impacts of drought on forests and identifying resilient species. We combined drone-based multispectral remote sensing with measurements of tree physiology and environmental parameters over two growing seasons in a 100-y-old Pinus sylvestris forest subject to 17-y of precipitation manipulation. Our goal was to determine if drone-based photochemical reflectance index (PRI) captures tree drought stress responses and whether responses are affected by long-term acclimation. PRI detects changes in xanthophyll cycle pigment dynamics, which reflect increases in photoprotective non-photochemical quenching activity resulting from drought-induced photosynthesis downregulation. Here, PRI of never-irrigated trees was up to 10 times lower (higher stress) than PRI of irrigated trees. Long-term acclimation to experimental treatment, however, influenced the seasonal relationship between PRI and soil water availability. PRI also captured diurnal decreases in photochemical efficiency, driven by vapour pressure deficit. Interestingly, 5 years after irrigation was stopped for a subset of the irrigated trees, a positive legacy effect persisted, with lower stress responses (higher PRI) compared with never-irrigated trees. This study demonstrates the ability of remotely sensed PRI to scale tree physiological responses to an entire forest and the importance of long-term acclimation in determining current drought stress responses.
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