Water deficits and heat shock effects on photosynthesis of a transgenic Arabidopsis thaliana constitutively expressing ABP9, a bZIP transcription factor
Open accessAbstract
The effects of water deficits (WD), heat shock (HS), and both (HSWD) on photosynthetic carbon- and light-use efficiencies together with leaf ABA content, pigment composition and expressions of stress- and light harvesting-responsive genes were investigated in ABP9 [ABA-responsive-element (ABRE) binding protein 9] transgenic Arabidopsis (5P2). WD, HS, and HSWD significantly decreased photosynthetic rate (A) and stomatal conductance (g(s)) in wild-type plants (WT). A and g(s) of 5P2 transgenic plants were slightly reduced by a single stress and were hardly modified by HSWD. Although A and electron transport rate (ETR) in 5P2 plants were depressed under optimal growth conditions (control) in relation to WT, they were enhanced under HS and HSWD. These results indicate that ABP9 transgenic plants are less susceptible to stress than the WT. In addition, the increased ABA contents in both WT and 5P2 plants in response to WD and/or HS stresses suggest that declines in A and g(s) might have been due to ABA-induced stomatal closure. Moreover, compared with WT, 5P2 plants exhibited higher ABA content, instantaneous water use efficiency (IWUE), Chl a/b, NPQ, and lower Chl/carotenoid ratios. Finally, altered expression of stress-regulated or light harvesting-responsive genes was observed. Collectively, our results indicate that constitutive expression of ABP9 improves the photosynthetic capacity of plants under stress by adjusting photosynthetic pigment composition, dissipating excess light energy, and elevating carbon-use efficiency as well as increasing ABA content, IWUE, and expression of stress-defensive genes, suggesting an important role of ABP9 in the regulation of plant photosynthesis under stress.
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ABP9 transgenic Arabidopsis plants were less susceptible to stress than wild type plants.
“The results revealed that ABP9 transgenic plants were less susceptible to the stress than the wild type plants.”
From Photosynthesis under stressful environments: An overview (2013) · cites this paper as Zhang et al. 2008
Increased ABA contents in both transgenic and wild type plants in response to water stress and/or heat stresses suggest that declines in PN and gs might have been due to ABA-induced stomata closure.
“In addition, the increased ABA contents in both transgenic and wild type plants in response to water stress and/or heat stresses suggest that declines in P N and g s might have been due to ABA-induced stomata closure.”
From Photosynthesis under stressful environments: An overview (2013) · cites this paper as Zhang et al. 2008
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Niyogi, K. K., Bjorkman, O., & Grossman, A. R. (1997) · The Plant Cell · doi:10.1105/tpc.9.8.1369 · Cited by 326 · cited 1× · see citing works
“Localization of NPQ in the antenna system is thought to be an efficient means of protective reactions from overstimulation that could result in the formation of reactive oxygen species (ROS) (Melis, 1999) and the photoprotective mechanism involves carotenoids ( Niyogi et al., 1997, 1998 ).”
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Photosynthesis under stressful environments: An overview
Ashraf, M., & Harris, P. J. C. (2013) · Photosynthetica · doi:10.1007/s11099-013-0021-6 · Cited by 2,028 · see citing works
- Authors
- Zhang, X., Wollenweber, B., Jiang, D., Liu, F., & Zhao, J.
- Affiliations
- Aarhus University (DK)
- Nanjing Agricultural University (CN)
- University of Copenhagen (DK)
- Chinese Academy of Agricultural Sciences (CN)
- Corresponding author
- Wollenweber, B.
- Zhao, J.
- Venue
- Journal of Experimental Botany
- Publisher
- Oxford University Press (OUP)
- Published
- 2008-03-07
- Volume
- 59
- Issue
- 4
- Pages
- 839-848
- ISSN
- 0022-0957 (ISSN-L)
- 1460-2431
- OpenAlex
- W2136944521
- Cited by
- 164
- References
- 1
- Citations by year
- 2026: 2 · 2025: 10 · 2024: 7 · 2023: 4 · 2022: 10 · 2021: 15 · 2020: 9 · 2019: 9 · 2018: 10 · 2017: 9 · 2016: 19 · 2015: 6 · 2014: 9 · 2013: 16 · 2012: 9
- FWCI
- 8.06
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by-nc
- Locations
- Journal of Experimental Botany (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
- Funders
- Chinese Academy of Agricultural Sciences
- National Key Research and Development Program of China
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
- Physical Sciences › Environmental Science › Global and Planetary Change › Plant Water Relations and Carbon Dynamics
- Keywords
- bZIP transcription factors, drought stress, heat shock, photosynthesis, transgenic Arabidopsis, abscisic acid, stomatal conductance, water use efficiency, non-photochemical quenching, photosynthetic pigments, stress-responsive gene expression, electron transport rate
- MeSH terms
- Abscisic Acid, Carotenoids, Chlorophyll, Hot Temperature, Photosynthesis, Water, Arabidopsis, Gene Expression Regulation, Plant, Plant Leaves, Plant Transpiration, Heat-Shock Response, Arabidopsis Proteins, Plants, Genetically Modified, Basic-Leucine Zipper Transcription Factors
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