ArticlePlant physiology2023
Cytokinins regulate rice lamina joint development and leaf angle.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.
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Who cites it
25 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.
- Overview of molecular mechanisms of plant leaf development: a systematic review.Frontiers in plant science · 2023Pooled it
- A single-nucleus atlas of ligular region uncovers brassinosteroid-driven cell fate transitions controlling leaf angle in maize.Nature communications · 2026Article
- Cross-Species Reprogramming of Developmental Plasticity and Metabolic Rewiring via Banana-Derived WUS2 Developmental Regulator.Plant biotechnology journal · 2026Article
- Epidermal Cell Dynamics Regulates Rice Lamina Joint Morphogenesis and Leaf Angle Formation through OsZHD1 and OsZHD2 Regulation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Genome-wide association analysis reveals natural genetic variations controlling canopy architecture traits in bread wheat.Scientific reports · 2026Article
- Article
- Field-scale robotic phenotyping of three-dimensional wheat canopy architectural traits.Frontiers in plant science · 2026Article
- Genome-wide association studies reveal genetic diversity and regulatory loci underlying dwarfing traits in banana.Journal of integrative plant biology · 2025Article
- Knockout ofPlants (Basel, Switzerland) · 2025Article
- The OsMAPK6-OsWRKY72 module positively regulates rice leaf angle through brassinosteroid signals.Plant communications · 2025Article
- Regulation of Rice Grain Quality by Exogenous Kinetin During Grain-Filling Period.Plants (Basel, Switzerland) · 2025Article
- Transcriptomics and Plant Hormone Analysis Reveal the Mechanism of Branching Angle Formation in Tea Plants (International journal of molecular sciences · 2025Article
- Combined transcriptomic and metabolomic analysis of phenylpropanoid biosynthesis in the mechanism of leaf angle formation in Sorghum.Frontiers in plant science · 2025Article
- Differential ABA sensitivity of superior and inferior rice grains is linked to cell cycle entry into endoreduplication.Frontiers in plant science · 2025Article
- Mining Candidate Genes for Leaf Angle inInternational journal of molecular sciences · 2024Article
- Spatially distributed cytokinins: Metabolism, signaling, and transport.Plant communications · 2024Review
- Purine permease (PUP) family gene PUP11 positively regulates the rice seed setting rate by influencing seed development.Plant cell reports · 2024Article
- Article
- Genome-wide association study reveals novel QTLs and candidate genes for panicle number in rice.Frontiers in genetics · 2024Article
- Comparative transcriptome profiling suggests the role of phytohormones in leaf stalk-stem angle in melon (PeerJ · 2024Article
Corrections and comments
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Leaf angle is determined by lamina joint inclination and is an important agronomic trait that determines plant architecture, photosynthetic efficiency, and crop yield. Cytokinins (CKs) are phytohormones involved in shaping rice (Oryza sativa L.) architecture, but their role in leaf angle remains unknown. Here, we report that CK accumulation mediated by rice CK OXIDASE/DEHYDROGENASE3 (OsCKX3) controls lamina joint development and negatively regulates leaf angle. Phenotypic analysis showed that rice osckx3 mutants had smaller leaf angles, while the overexpression lines (OsCKX3-OE) had larger leaf angles. Histological sections indicated that the leaf inclination changes in the osckx3 and OsCKX3-OE lines resulted from asymmetric proliferation of the cells and vascular bundles in the lamina joint. Reverse transcription quantitative PCR, promoter-fused β-glucuronidase expression, and subcellular localization assays indicated that OsCKX3 was highly expressed in the lamina joint, and OsCKX3-GFP fusion protein localized to the endoplasmic reticulum. The enzyme assays using recombinant protein OsCKX3 revealed that OsCKX3 prefers trans-zeatin (tZ) and isopentenyladenine (iP). Consistently, tZ and iP levels increased in the osckx3 mutants but decreased in the OsCKX3 overexpression lines. Interestingly, agronomic trait analysis of the rice grown in the paddy field indicated that osckx3 displayed a smaller leaf angle and enhanced primary branch number, grain size, 1,000-grain weight, and flag leaf size. Collectively, our results revealed that enhancing CK levels in the lamina joint by disrupting OsCKX3 negatively regulates leaf angle, highlighting that the CK pathway can be engineered to reduce leaf angle in rice and possibly in other cereals.
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