ArticlePlant physiology2016
Cytokinins Are Initial Targets of Light in the Control of Bud Outgrowth.
Article in Plant physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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Who cites it
50 citing papers in PubMed, 116 citations in OpenAlex.
- Article
- Overexpression of an Alfalfa Gene,Genes · 2026Article
- Mechanistic Insights into Cytokinin-Regulated Leaf Senescence in Barley: Genotype-Specific Responses in Physiology and Protein Stability.International journal of molecular sciences · 2025Article
- Temporal Shifts in Hormone Signaling Networks Orchestrate Soybean Floral Development Under Field Conditions: An RNA-Seq Study.International journal of molecular sciences · 2025Article
- Multi-omics analysis of the regulatory network in winter buds of 'Cabernet Sauvignon' grapevine from dormancy to bud break.Plant biotechnology journal · 2025Article
- Regulatory Mechanisms of Bud Dormancy: Environmental, Hormonal, and Genetic Perspectives.International journal of molecular sciences · 2025Review
- BAP regulates lateral bud outgrowth to promote tillering in Paphiopedilum callosum (Orchidaceae).BMC plant biology · 2025Article
- Transcriptomics and Plant Hormone Analysis Reveal the Mechanism of Branching Angle Formation in Tea Plants (International journal of molecular sciences · 2025Article
- Sugar Transport and Signaling in Shoot Branching.International journal of molecular sciences · 2024Review
- Shade signals activate distinct molecular mechanisms that induce dormancy and inhibit flowering in vegetative axillary buds of sorghum.Plant direct · 2024Article
- Transcriptomic and Physiological Analyses for the Role of Hormones and Sugar in Axillary Bud Development of Wild Strawberry Stolon.Plants (Basel, Switzerland) · 2024Article
- Effects of Photoperiod and Light Quality on Germination and Growth ofPlants (Basel, Switzerland) · 2024Article
- HPeerJ · 2024Article
- Interaction of Phytohormones and External Environmental Factors in the Regulation of the Bud Dormancy in Woody Plants.International journal of molecular sciences · 2023Review
- Genome-Wide Identification of the RR Gene Family and Its Expression Analysis in Response to TDZ Induction inPlants (Basel, Switzerland) · 2023Article
- Auxin-independent effects of apical dominance induce changes in phytohormones correlated with bud outgrowth.Plant physiology · 2023Article
- Genome-Wide Identification and Expression Analysis of Cytokinin Response Regulator (RR) Genes in the Woody PlantInternational journal of molecular sciences · 2022Article
- The bud dormancy disconnect: latent buds of grapevine are dormant during summer despite a high metabolic rate.Journal of experimental botany · 2022Article
- Light and Plant Growth Regulators on In Vitro Proliferation.Plants (Basel, Switzerland) · 2022Review
- Cyclanilide Induces Lateral Bud Outgrowth by Modulating Cytokinin Biosynthesis and Signalling Pathways in Apple Identified via Transcriptome Analysis.International journal of molecular sciences · 2022Article
Corrections and comments
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Authors and funding
12 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Bud outgrowth is controlled by environmental and endogenous factors. Through the use of the photosynthesis inhibitor norflurazon and of masking experiments, evidence is given here that light acts mainly as a morphogenic signal in the triggering of bud outgrowth and that initial steps in the light signaling pathway involve cytokinins (CKs). Indeed, in rose (Rosa hybrida), inhibition of bud outgrowth by darkness is suppressed solely by the application of CKs. In contrast, application of sugars has a limited effect. Exposure of plants to white light (WL) induces a rapid (after 3-6 h of WL exposure) up-regulation of CK synthesis (RhIPT3 and RhIPT5), of CK activation (RhLOG8), and of CK putative transporter RhPUP5 genes and to the repression of the CK degradation RhCKX1 gene in the node. This leads to the accumulation of CKs in the node within 6 h and in the bud at 24 h and to the triggering of bud outgrowth. Molecular analysis of genes involved in major mechanisms of bud outgrowth (strigolactone signaling [RwMAX2], metabolism and transport of auxin [RhPIN1, RhYUC1, and RhTAR1], regulation of sugar sink strength [RhVI, RhSUSY, RhSUC2, and RhSWEET10], and cell division and expansion [RhEXP and RhPCNA]) reveal that, when supplied in darkness, CKs up-regulate their expression as rapidly and as intensely as WL Additionally, up-regulation of CKs by WL promotes xylem flux toward the bud, as evidenced by Methylene Blue accumulation in the bud after CK treatment in the dark. Altogether, these results suggest that CKs are initial components of the light signaling pathway that controls the initiation of bud outgrowth.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.