Increase in leaf temperature opens stomata and decouples net photosynthesis from stomatal conductance in Pinus taeda and Populus deltoides x nigra
Open accessAbstract
The effect of temperature on stomatal conductance (gs) and corresponding gas exchange parameters was studied in two tree species with contrasting leaf anatomy and ecophysiology-a broadleaf angiosperm, Populus deltoides x nigra (poplar), and a needle-leaf gymnosperm, Pinus taeda (loblolly pine). Experiments were conducted in growth chambers across a leaf temperature range of 19-48°C. Manipulations of temperature were done in well-watered and drought soil conditions and under ambient (400 ppm) and elevated (800 ppm) air CO2 concentrations. Increases in leaf temperature caused stomatal opening at both ambient and elevated [CO2]. The gs increased by 42% in poplar and by 40% in loblolly pine when leaf temperature increased from 30°C to 40°C at a vapour pressure difference of 1 kPa. Stomatal limitation to photosynthesis decreased in elevated temperature in loblolly pine but not in poplar. The ratio of net photosynthesis to gs depended on leaf temperature, especially at high temperatures. Evaporative cooling of transpiring leaves resulted in reductions in leaf temperature up to 9°C in well-watered poplar but only 1°C in drought-stressed poplar and in loblolly pine. As global mean temperatures rise and temperature extremes become more frequent and severe, understanding the effect of temperature on gs, and modelling that relationship, will become increasingly important.
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Improper development of the photosynthetic system and malfunctioning of stomata during in vitro culture may lead to a series of morphological and physiological disorders of plant tissue.
“Improper development of the photosynthetic system and malfunctioning of stomata during in vitro culture may lead to a series of morphological and physiological disorders of plant tissue (Urban et al., 2017).”
From Growth, photosynthetic function, and stomatal characteristics of Persian walnut explants in vitro under different light spectra (2023) · cites this paper as Urban et al., 2017
The Introduction (page unavailable) links stomatal regulation to photosynthesis and plant growth, but does not address malfunctioning stomata or improper photosynthetic development during in vitro culture. A search for in vitro culture, tissue-culture abnormalities, and morphological or physiological disorders found no passage addressing the claimed consequences. (LLM, conf=0.74)
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Saeedi, S. A., Vahdati, K., Sarikhani, S., Daylami, S. D., Davarzani, M., Gruda, N. S., & Aliniaeifard, S. (2023) · Frontiers in Plant Science · doi:10.3389/fpls.2023.1292045 · Cited by 30 · see citing works
- Authors
- Urban, J., Ingwers, M. W., McGuire, M. A., & Teskey, R. O.
- Affiliations
- Siberian Federal University (RU)
- University of Georgia (US)
- Corresponding author
- Urban, Josef
- Venue
- Journal of Experimental Botany
- Publisher
- Oxford University Press (OUP)
- Published
- 2017-03-01
- Volume
- 68
- Issue
- 7
- Pages
- 1757-1767
- ISSN
- 0022-0957 (ISSN-L)
- 1460-2431
- PMC
- PMC5444456
- OpenAlex
- W2593913914
- Cited by
- 486
- References
- 1
- Citations by year
- 2026: 52 · 2025: 76 · 2024: 60 · 2023: 62 · 2022: 44 · 2021: 81 · 2020: 45 · 2019: 37 · 2018: 26 · 2017: 3
- FWCI
- 21.04
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by
- Locations
- Journal of Experimental Botany (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- SibFU Digital Repository (Siberian Federal University) (submittedVersion, cc-by)
- Topics
- Physical Sciences › Environmental Science › Global and Planetary Change › Plant Water Relations and Carbon Dynamics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant responses to elevated CO2
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
- Keywords
- leaf temperature, stomatal conductance, stomatal limitation, net photosynthesis, Pinus taeda, elevated CO2, drought stress, evaporative cooling, gas exchange, leaf anatomy, temperature extremes, climate change
- MeSH terms
- Hot Temperature, Photosynthesis, Plant Leaves, Plant Transpiration, Populus, Pinus taeda, Plant Stomata, Droughts
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