ArticleAnnals of botany2020
Ascorbate glutathione-dependent H2O2 scavenging is an important process in axillary bud outgrowth in rosebush.
Article in Annals of botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 32 citations in OpenAlex.
- Article
- Effects of leaf scorch on photosynthetic characteristics, fruit yield, and quality of walnuts.Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Multiple Physiological and Biochemical Functions of Ascorbic Acid in Plant Growth, Development, and Abiotic Stress Response.International journal of molecular sciences · 2024Review
- HPeerJ · 2024Article
- 24-Epibrassinolide alleviates diazinon oxidative damage by escalating activities of antioxidant defense systems in maize plants.Scientific reports · 2023Article
- Redox regulation, thioredoxins, and glutaredoxins in retrograde signalling and gene transcription.Journal of experimental botany · 2023Review
- Metabolic regulation of quiescence in plants.The Plant journal : for cell and molecular biology · 2023Article
- Application of proteomics to determine the mechanism of ozone on sweet cherries (Frontiers in plant science · 2023Article
- Glucose-6-Phosphate Dehydrogenases: The Hidden Players of Plant Physiology.International journal of molecular sciences · 2022Review
- Changes in Reactive Oxygen Species, Antioxidants and Carbohydrate Metabolism in Relation to Dormancy Transition and Bud Break in Apple (Antioxidants (Basel, Switzerland) · 2021Article
- Redox-related gene expression and sugar accumulation patterns are altered in the edible inflorescence produced by the cultivated form of pacaya palm (Chamaedorea tepejilote).Annals of botany · 2021Article
- Exogenous CaPlanta · 2021Article
- Ascorbate-glutathione pathways mediated by cytokinin regulate H2O2 levels in light-controlled rose bud burst.Plant physiology · 2021Article
- Hydrogen Peroxide Increases during Endodormancy and Decreases during Budbreak in Grapevine (Antioxidants (Basel, Switzerland) · 2021Article
- Comparative Study on Physiological Responses and Gene Expression of Bud Endodormancy Release Between Two Herbaceous Peony Cultivars (Frontiers in plant science · 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
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6 authors at 4 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsBranching is an important mechanism of plant shape establishment and the direct consequence of axillary bud outgrowth. Recently, hydrogen peroxide (H2O2) metabolism, known to be involved in plant growth and development, has been proposed to contribute to axillary bud outgrowth. However, the involvement of H2O2 in this process remains unclear.
methodsWe analysed the content of H2O2 during bud outgrowth and characterized its catabolism, both at the transcriptional level and in terms of its enzymatic activities, using RT-qPCR and spectrophotometric methods, respectively. In addition, we used in vitro culture to characterize the effects of H2O2 application and the reduced glutathione (GSH) synthesis inhibitor l-buthionine sulfoximine (BSO) on bud outgrowth in relation to known molecular markers involved in this process. KEY
resultsQuiescent buds displayed a high content of H2O2 that declined when bud outgrowth was initiated, as the consequence of an increase in the scavenging activity that is associated with glutathione pathways (ascorbate-glutathione cycle and glutathione biosynthesis); catalase did not appear to be implicated. Modification of bud redox state after the application of H2O2 or BSO prevented axillary bud outgrowth by repressing organogenesis and newly formed axis elongation. Hydrogen peroxide also repressed bud outgrowth-associated marker gene expression.
conclusionsThese results show that high levels of H2O2 in buds that are in a quiescent state prevents bud outgrowth. Induction of ascorbate-glutathione pathway scavenging activities results in a strong decrease in H2O2 content in buds, which finally allows bud outgrowth.
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