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Tolerance of pea (Pisum sativum L.) to long‐term salt stress is associated with induction of antioxidant defences
Open accessAbstract
ABSTRACT Using two cultivars of Pisum sativum L. with different sensitivity to NaCl, the effect of long‐term (15 d) NaCl (70 m M) treatments on the activity and expression of the foliar ascorbate–glutathione cycle enzymes, superoxide dismutase isozymes and their mRNAs was evaluated and related to their ascorbate and glutathione contents. High‐speed supernatant (soluble) fractions, enriched for cytosolic components of the antioxidant system, were used. In this fraction from the NaCl‐tolerant variety (cv Granada), the activities of ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), Mn‐superoxide dismutase (Mn‐SOD) and dehydroascorbate reductase (DHAR) increased, while CuZn‐SOD activity remained constant. In the NaCl‐sensitive plants (cv Challis), salinity did not produce significant changes in APX, MDHAR and GR activities. Only DHAR activity was induced in cv Challis, whereas soluble CuZn‐SOD activity decreased by about 35%. Total ascorbate and glutathione contents decreased in both cultivars, but the decline was greater in NaCl‐sensitive plants. This difference between the two cultivars was more pronounced when the transcript levels of some these enzymes were examined. Transcript levels for mitochondrial Mn‐SOD, chloroplastic CuZn‐SOD and phospholipid hydroperoxide glutathione peroxidase (PHGPX), cytosolic GR and APX were strongly induced in the NaCl‐tolerant variety but not in the NaCl‐sensitive variety. These data strongly suggest that induction of antioxidant defences is at least one component of the tolerance mechanism of peas to long‐term salt‐stress.
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“However, studies on the effects of adverse environmental conditions on this plant species have only been done at the plant level (Hernandez et al., 2000; Allen and Ort, 2001).”
From Exploring the Applicability of Calorespirometry to Assess Seed Metabolic Stability Upon Temperature Stress Conditions—Pisum sativum L. Used as a Case Study (2022) · cites this paper as Hernandez et al., 2000
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Metadata
- Authors
- Hernández, J. A., Jiménez, A., Mullineaux, P., & Sevilia, F.
- Affiliations
- Consejo Superior de Investigaciones Científicas (ES)
- John Innes Centre (GB)
- Venue
- Plant, Cell & Environment
- Publisher
- Wiley
- Published
- 2000-08
- Volume
- 23
- Issue
- 8
- Pages
- 853-862
- ISSN
- 0140-7791 (ISSN-L)
- 1365-3040
- OpenAlex
- W2125614572
- Cited by
- 837
- References
- 74
- Citations by year
- 2026: 15 · 2025: 23 · 2024: 22 · 2023: 32 · 2022: 33 · 2021: 45 · 2020: 43 · 2019: 39 · 2018: 36 · 2017: 46 · 2016: 34 · 2015: 44 · 2014: 50 · 2013: 54 · 2012: 44
- FWCI
- 12.90
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Plant Cell & Environment (publishedVersion)
- Funders
- Royal Society
- Universidad de Murcia
- Directorate for Biological Sciences
- Biotechnology and Biological Sciences Research Council
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
- Keywords
- pea, Pisum sativum, salt stress, NaCl tolerance, antioxidant defense, ascorbate-glutathione cycle, superoxide dismutase, ascorbate peroxidase, glutathione reductase, monodehydroascorbate reductase, dehydroascorbate reductase, cultivar differences
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