Combined effects of water stress and high temperature on photosynthesis, nitrogen metabolism and lipid peroxidation of a perennial grass Leymus chinensis
Abstract
Drought and high-temperature stresses have been extensively studied; however, little is known about their combined impact on plants. In the present study, we determined the photosynthetic gas exchange, chlorophyll fluorescence, nitrogen level, and lipid peroxidation of the leaves of a perennial grass (Leymus chinensis (Trin.) Tzvel.) subjected to three constant temperatures (23, 29 and 32 degrees C), and five soil-moisture levels (75-80%, 60-65%, 50-55%, 35-40% and 25-30% of field capacity, respectively). High temperature significantly decreased plant biomass, leaf green area, leaf water potential, photosynthetic rate (A), maximal efficiency of PSII photochemistry (F (v)/F (m)), actual PSII efficiency (Phi(PSII)), the activities of nitrate reductase (NR; EC 1.6.6.1) and glutamine synthetase (GS; EC 6.3.1.2), but markedly increased the ratio of leaf area to leaf weight (SLA), endopeptidase (EP; EC 3.4.24.11) activity, and malondialdehyde (MDA) content, especially under severe water stress conditions. The A and F (v)/F (m) were significantly and positively correlated with leaf-soluble protein content, and the activities of NR and GS. However, both photosynthesis parameters were significantly and negatively correlated with EP activity and MDA content (P < 0.05). It is suggested that high temperature, combined with severe soil drought, might reduce the function of PSII, weaken nitrogen anabolism, strengthen protein catabolism, and provoke lipid peroxidation. The results also indicate that severe water stress might exacerbate the adverse effects of high temperature, and their combination might reduce the plant productivity and distribution range of L. chinensis in the future.
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Xu and Zhou (2006) found that the function of Photosystem II decreased in Leymus Chinensis under combined stresses of drought and heat.
“Xu and Zhou (2006) subjected the Leymus Chinensis under the combined stresses of drought and heat and found that the function of Photosystem II (PSII) decreased [37].”
From Impact of Climate Change on Crops Adaptation and Strategies to Tackle Its Outcome: A Review (2019) · cites this paper as [37]
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Impact of Climate Change on Crops Adaptation and Strategies to Tackle Its Outcome: A Review
Raza, A., Razzaq, A., Mehmood, S. S., Zou, X., Zhang, X., Lv, Y., & Xu, J. (2019) · Plants · doi:10.3390/plants8020034 · Cited by 1,762 · see citing works
“Xu and Zhou (2006) subjected the Leymus Chinensis under the combined stresses of drought and heat and found that the function of Photosystem II (PSII) decreased [37].”
BackgroundGenetic response of growth phases for abiotic environmental stress tolerance in cereal crop plants
Ali, Q., & Malik, A. (2021) · Genetika · doi:10.2298/gensr2101419a · Cited by 28 · see citing works
- Authors
- Xu, Z. Z., & Zhou, G. S.
- Affiliations
- Chinese Academy of Sciences (CN)
- Corresponding author
- Zhou, Guang Sheng
- ORCID
- Zhou, Guang Sheng
- Venue
- Planta
- Published
- 2006-05-10
- Volume
- 224
- Issue
- 5
- Pages
- 1080-1090
- ISSN
- 0032-0935 (ISSN-L)
- 1432-2048
- OpenAlex
- W1975375069
- Cited by
- 314
- References
- 51
- Citations by year
- 2026: 11 · 2025: 6 · 2024: 10 · 2023: 22 · 2022: 32 · 2021: 24 · 2020: 19 · 2019: 13 · 2018: 18 · 2017: 20 · 2016: 26 · 2015: 19 · 2014: 16 · 2013: 17 · 2012: 12
- FWCI
- 9.82
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Planta (publishedVersion)
- PubMed (publishedVersion)
- Institute of Botany, CAS Institutional Repository (submittedVersion)
- Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Institute of Botany, Chinese Academy of Sciences
- 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
- Leymus chinensis, drought stress, high temperature, combined abiotic stress, photosynthesis, nitrogen metabolism, lipid peroxidation, chlorophyll fluorescence, nitrate reductase, glutamine synthetase, endopeptidase, malondialdehyde, leaf water potential, protein degradation, soil moisture, perennial grasses
- MeSH terms
- Amino Acids, Carbon Dioxide, Glutamate-Ammonia Ligase, Poaceae, Hot Temperature, Malondialdehyde, Nitrogen, Endopeptidases, Photosynthesis, Plant Proteins, Soil, Water, Lipid Peroxidation, Nitrate Reductase
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