ArticlePlant physiology2004
Auxin from the developing inflorescence is required for the biosynthesis of active gibberellins in barley stems.
Article in Plant physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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Who cites it
42 citing papers in PubMed.
- Integrated metabolomic-transcriptomic profiling of dwarf Camellia reticulata 'Hentiangao' reveals key gibberellin metabolism genes and multi-hormone crosstalk under GABMC plant biology · 2026Article
- Elucidation of the genetic architecture stabilizing the heading time in barley (Hordeum vulgare L.).Planta · 2026Article
- Effects of Decapitation on Chlorophyll Metabolism, Endogenous Hormones, and Tillering Ability inBiology · 2025Article
- Combining Transcriptome and Hormone-Targeted Metabolome Analyses to Dissect the Regulatory Mechanisms Underlying Wheat Peduncle Elongation.Plants (Basel, Switzerland) · 2025Article
- Regulatory Mechanisms of Bud Dormancy: Environmental, Hormonal, and Genetic Perspectives.International journal of molecular sciences · 2025Review
- Gibberellin-mediated internode elongation in grasses with a focus on bamboo: molecular pathways and regulatory networks.Frontiers in plant science · 2025Review
- Environmental control of rice flowering time.Plant communications · 2023Review
- Exogenous gibberellin can effectively and rapidly break intermediate physiological dormancy ofFrontiers in plant science · 2022Article
- Manipulation of Barley Development and Flowering Time by Exogenous Application of Plant Growth Regulators.Frontiers in plant science · 2021Article
- Gene Expression Dynamics in Rice Peduncles at the Heading Stage.Frontiers in genetics · 2020Article
- Elevated gibberellin altered morphology, anatomical structure, and transcriptional regulatory networks of hormones in celery leaves.Protoplasma · 2019Article
- Antioxidant and the Dwarfing Candidate Gene of "Nantongxiaofangshi" (Oxidative medicine and cellular longevity · 2019Article
- Hormonal Orchestration of Bud Dormancy Cycle in Deciduous Woody Perennials.Frontiers in plant science · 2019Review
- Sucrose affects the developmental transition of rhizomes in Oryza longistaminata.Journal of plant research · 2018Article
- Large Differences in Gene Expression Responses to Drought and Heat Stress between Elite Barley Cultivar Scarlett and a Spanish Landrace.Frontiers in plant science · 2017Article
- Phytohormones and Beneficial Microbes: Essential Components for Plants to Balance Stress and Fitness.Frontiers in microbiology · 2017Review
- Abnormal Endogenous Repression of GA Signaling in a Seedless Table Grape Cultivar with High Berry Growth Response to GA Application.Frontiers in plant science · 2017Article
- Heat-induced phytohormone changes are associated with disrupted early reproductive development and reduced yield in rice.Scientific reports · 2016Article
- Interactions between Brassinosteroids and Gibberellins: Synthesis or Signaling?The Plant cell · 2016Article
- Developing xylem-preferential expression of PdGA20ox1, a gibberellin 20-oxidase 1 from Pinus densiflora, improves woody biomass production in a hybrid poplar.Plant biotechnology journal · 2016Article
Corrections and comments
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Authors and funding
4 authors.
Funding
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Abstract
Multiple gibberellins (GAs) were quantified in the stems of intact, decapitated, and decapitated auxin-treated barley (Hordeum vulgare) plants. Removal of the developing inflorescence reduced the endogenous levels of indole-3-acetic acid (IAA), GA(1), and GA(3) and increased the level of GA(29) in internodal and nodal tissues below the site of excision. Application of IAA to the excised stump restored GA levels to normal in almost all cases. The conversion of [(14)C]GA(20) to bioactive [(14)C]GA(1) and of [(14)C]GA(5) to bioactive [(14)C]GA(3) was reduced by decapitation, and IAA application was able to restore conversion rates back to the levels found in intact plants. The amount of mRNA for the principal vegetative 3-oxidase (converting GA(20) to GA(1), and GA(5) to GA(3)) was decreased in decapitated plants and restored by IAA application. The results indicate that the inflorescence of barley is a source of IAA that is transported basipetally into the internodes and nodes where bioactive GA(1) and GA(3) are biosynthesized. Thus, IAA is required for normal GA biosynthesis in stems, acting at multiple steps in the latter part of the pathway.
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