ArticlePlant physiology2021
Ascorbate-glutathione pathways mediated by cytokinin regulate H2O2 levels in light-controlled rose bud burst.
Article in Plant physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 29 citations in OpenAlex.
- Tropical vulnerability and temperate resilience: molecular and physiological insights into cold stress adaptation in oil palm.GM crops & food · 2026Review
- Adaptation of highland barley to drought stress: from phenotypic analysis to physiological and molecular mechanisms.BMC plant biology · 2026Article
- Cytokinin derivatives as tools to enhance plant stress resilience.Frontiers in plant science · 2026Review
- Regulatory Mechanisms of Bud Dormancy: Environmental, Hormonal, and Genetic Perspectives.International journal of molecular sciences · 2025Review
- Multifunctional Role of Cytokinin in Horticultural Crops.International journal of molecular sciences · 2025Review
- Transcriptomic and Physiological Analyses for the Role of Hormones and Sugar in Axillary Bud Development of Wild Strawberry Stolon.Plants (Basel, Switzerland) · 2024Article
- Transcriptomic and Hormone Analyses Provide Insight into the Regulation of Axillary Bud Outgrowth ofCurrent issues in molecular biology · 2023Article
- Metabolic regulation of quiescence in plants.The Plant journal : for cell and molecular biology · 2023Article
- Low-Arsenic Accumulating Cabbage Possesses Higher Root Activities against Oxidative Stress of Arsenic.Plants (Basel, Switzerland) · 2023Article
- Glucose-6-Phosphate Dehydrogenases: The Hidden Players of Plant Physiology.International journal of molecular sciences · 2022Review
- Type-A response regulators negatively mediate heat stress response by altering redox homeostasis in Arabidopsis.Frontiers in plant science · 2022Article
- Changes in Reactive Oxygen Species, Antioxidants and Carbohydrate Metabolism in Relation to Dormancy Transition and Bud Break in Apple (Antioxidants (Basel, Switzerland) · 2021Article
- Photocontrol of Axillary Bud Outgrowth by MicroRNAs: Current State-of-the-Art and Novel Perspectives Gained From the Rosebush Model.Frontiers in plant science · 2021Article
- Exogenous 6-Benzyladenine Improves Waterlogging Tolerance in Maize Seedlings by Mitigating Oxidative Stress and Upregulating the Ascorbate-Glutathione Cycle.Frontiers in plant science · 2021Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rosebush (Rosa "Radrazz") plants are an excellent model to study light control of bud outgrowth since bud outgrowth only arises in the presence of light and never occurs in darkness. Recently, we demonstrated high levels of hydrogen peroxide (H2O2) present in the quiescent axillary buds strongly repress the outgrowth process. In light, the outgrowing process occurred after H2O2 scavenging through the promotion of Ascorbic acid-Glutathione (AsA-GSH)-dependent pathways and the continuous decrease in H2O2 production. Here we showed Respiratory Burst Oxidase Homologs expression decreased in buds during the outgrowth process in light. In continuous darkness, the same decrease was observed although H2O2 remained at high levels in axillary buds, as a consequence of the strong inhibition of AsA-GSH cycle and GSH synthesis preventing the outgrowth process. Cytokinin (CK) application can evoke bud outgrowth in light as well as in continuous darkness. Furthermore, CKs are the initial targets of light in the photocontrol process. We showed CK application to cultured buds in darkness decreases bud H2O2 to a level that is similar to that observed in light. Furthermore, this treatment restores GSH levels and engages bud burst. We treated plants with buthionine sulfoximine, an inhibitor of GSH synthesis, to solve the sequence of events involving H2O2/GSH metabolisms in the photocontrol process. This treatment prevented bud burst, even in the presence of CK, suggesting the sequence of actions starts with the positive CK effect on GSH that in turn stimulates H2O2 scavenging, resulting in initiation of bud outgrowth.
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