ArticlePlant physiology2002
Protection against heat stress-induced oxidative damage in Arabidopsis involves calcium, abscisic acid, ethylene, and salicylic acid.
Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 257 papers.
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257 citing papers in PubMed, 889 citations in OpenAlex.
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- A New Model of the Mechanisms behind Glucose Oxidase Action in Plant Insect Interactions.Journal of chemical ecology · 2025Review
- Transcriptomic Identification of Key Genes Responding to High Heat Stress in Moso Bamboo (Genes · 2025Article
- Molecular Networks Governing Plant Responses to Heat and Cold Stress.Plants (Basel, Switzerland) · 2025Review
- BPM Proteins Modulate Heat Stress Response inPlants (Basel, Switzerland) · 2025Article
- Algal origins of core land plant stress response subnetworks.The Plant journal : for cell and molecular biology · 2025Article
- Plant Signaling Hormones and Transcription Factors: Key Regulators of Plant Responses to Growth, Development, and Stress.Plants (Basel, Switzerland) · 2025Review
- Stress resilience in plants: the complex interplay between heat stress memory and resetting.The New phytologist · 2025Review
- The Effect of Heat Stress on Wheat Flag Leaves Revealed by Metabolome and Transcriptome Analyses During the Reproductive Stage.International journal of molecular sciences · 2025Article
- Article
- CINV1 and CINV2 are required for increased tolerance to diverse stresses after ethylene-pretreatment of germinating seeds.PloS one · 2025Article
- The role of salicylic acid in modulating phenotyping in spring wheat varieties for mitigating drought stress.BMC plant biology · 2024Article
- Identification and Analysis of the Superoxide Dismutase (SOD) Gene Family and Potential Roles in High-Temperature Stress Response of Herbaceous Peony (Antioxidants (Basel, Switzerland) · 2024Article
197 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plants, in common with all organisms, have evolved mechanisms to cope with the problems caused by high temperatures. We examined specifically the involvement of calcium, abscisic acid (ABA), ethylene, and salicylic acid (SA) in the protection against heat-induced oxidative damage in Arabidopsis. Heat caused increased thiobarbituric acid reactive substance levels (an indicator of oxidative damage to membranes) and reduced survival. Both effects required light and were reduced in plants that had acquired thermotolerance through a mild heat pretreatment. Calcium channel blockers and calmodulin inhibitors increased these effects of heating and added calcium reversed them, implying that protection against heat-induced oxidative damage in Arabidopsis requires calcium and calmodulin. Similar to calcium, SA, 1-aminocyclopropane-1-carboxylic acid (a precursor to ethylene), and ABA added to plants protected them from heat-induced oxidative damage. In addition, the ethylene-insensitive mutant etr-1, the ABA-insensitive mutant abi-1, and a transgenic line expressing nahG (consequently inhibited in SA production) showed increased susceptibility to heat. These data suggest that protection against heat-induced oxidative damage in Arabidopsis also involves ethylene, ABA, and SA. Real time measurements of cytosolic calcium levels during heating in Arabidopsis detected no increases in response to heat per se, but showed transient elevations in response to recovery from heating. The magnitude of these calcium peaks was greater in thermotolerant plants, implying that these calcium signals might play a role in mediating the effects of acquired thermotolerance. Calcium channel blockers and calmodulin inhibitors added solely during the recovery phase suggest that this role for calcium is in protecting against oxidative damage specifically during/after recovery.
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