ArticleAnnals of botany2015
Glutathione redox state, tocochromanols, fatty acids, antioxidant enzymes and protein carbonylation in sunflower seed embryos associated with after-ripening and ageing.
Article in Annals of botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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29 citing papers in PubMed, 74 citations in OpenAlex.
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- Environmental stress reveals new insights regarding proteome rebalancing in Arabidopsis thaliana seeds.The Plant journal : for cell and molecular biology · 2026Article
- Molecular timekeepers: the curious alliance of redox, repair, and protective proteins in preserving seed longevity.Crop health · 2026Review
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- Regulation of seed germination: ROS, epigenetic, and hormonal aspects.Journal of advanced research · 2025Review
- Modelling the quantitative effect of oxygen on the ageing of primed celery seeds.The Plant journal : for cell and molecular biology · 2025Article
- Photoreduced Amino Acid-Capped AgCu Nanohybrids: Precision Tools for Seed-Borne Pathogen Eradication With Concurrent Growth Promotion in Sunflower Systems.International journal of food science · 2025Article
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- Comparison of dehydration systems in quality and chemical effects on sunflower seeds.Scientific reports · 2024Article
- Physiological and molecular changes of onion (Allium cepa L.) seeds under different aging conditions.BMC plant biology · 2024Article
- Full-Length Transcriptome Sequencing Reveals the Molecular Mechanism ofAntioxidants (Basel, Switzerland) · 2023Article
- ROS and RNS Alterations in the Digestive Fluid ofPlants (Basel, Switzerland) · 2022Article
- Insights into the Regulation of Rice Seed Storability by Seed Tissue-Specific Transcriptomic and Metabolic Profiling.Plants (Basel, Switzerland) · 2022Article
- Review
- Reactive oxygen species-induced protein carbonylation promotes deterioration of physiological activity of wheat seeds.PloS one · 2022Article
- Nitric Oxide as a Remedy against Oxidative Damages in Apple Seeds Undergoing Accelerated Ageing.Antioxidants (Basel, Switzerland) · 2021Article
- CSN improves seed vigor of aged sunflower seeds by regulating the fatty acid, glycometabolism, and abscisic acid metabolism.Journal of advanced research · 2021Article
- AtFAHD1a: A New Player Influencing Seed Longevity and Dormancy in Arabidopsis?International journal of molecular sciences · 2021Article
- Roles of Reactive Oxygen Species and Mitochondria in Seed Germination.Frontiers in plant science · 2021Review
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsLoss of seed viability has been associated with deteriorative processes that are partly caused by oxidative damage. The breaking of dormancy, a seed trait that prevents germination in unfavourable seasons, has also been associated with oxidative processes. It is neither clear how much overlap exists between these mechanisms nor is the specific roles played by oxygen and reactive oxygen species.
methodsAntioxidant profiles were studied in fresh (dormant) or after-ripened (non-dormant) sunflower (Helianthus annuus) embryos subjected to controlled deterioration at 40 °C and 75 % relative humidity under ambient (21 %) or high O2 (75 %). Changes in seed vigour and viability, dormancy, protein carbonylation and fatty acid composition were also studied. KEY
resultsAfter-ripening of embryonic axes was accompanied by a shift in the thiol-based cellular redox environment towards more oxidizing conditions. Controlled deterioration under high O2 led to a faster loss of seed dormancy and significant decreases in glutathione reductase and glutathione peroxidase activities, but viability was lost at the same rate as under ambient O2. Irrespective of O2 concentration, the overall thiol-based cellular redox state increased significantly over 21 d of controlled deterioration to strongly oxidizing conditions and then plateaued, while viability continued to decrease. Viability loss was accompanied by a rapid decrease in glucose-6-phosphate-dehydrogenase, which provides NADPH for reductive processes such as required by glutathione reductase. Protein carbonylation, a marker of protein oxidation, increased strongly in deteriorating seeds. The lipid-soluble tocochromanols, dominated by α-tocopherol, and fatty acid profiles remained stable.
conclusionsAfter-ripening, dormancy-breaking during ageing and viability loss appeared to be associated with oxidative changes of the cytosolic environment and proteins in the embryonic axis rather than the lipid environment. High O2 concentrations accelerated dormancy alleviation but, surprisingly, did not accelerate the rate of viability loss.
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