ArticleThe Plant cell2021
AUXIN RESPONSE FACTORS 6 and 17 control the flag leaf angle in rice by regulating secondary cell wall biosynthesis of lamina joints.
Article in The Plant cell, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.
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52 citing papers in PubMed, 89 citations in OpenAlex.
- Spatiotemporal Metabolome and Single-Nucleus Transcriptome Integration Illuminates an Auxin Gradient Orchestrated by NtTAC1 Underlying Leaf Angle Regulation in Tobacco.Plant biotechnology journal · 2026Article
- Evolution trajectory of auxin response factor across Triticeae species underpin candidate genes for the regulation of salt/alkali stress responsive networks.Plant cell reports · 2026Article
- Genome-Wide Identification and Expression Profiling of theInternational journal of molecular sciences · 2026Article
- Exploration of the signaling pathway involving OsCSN8 in regulating the leaf angle of rice.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- ZmDRL1 regulates maize leaf angle via phytohormone signaling.Plant cell reports · 2026Article
- Robust estimation of rice flag leaf inclination angle from SfM-MVS point clouds via ensemble skeleton extraction: validation in field and pot experiments.Plant methods · 2026Article
- Article
- Epidermal Cell Dynamics Regulates Rice Lamina Joint Morphogenesis and Leaf Angle Formation through OsZHD1 and OsZHD2 Regulation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Article
- Activation of OsOxO2 by T-DNA Insertion Affects Plant Height and Leaf Angle in Rice.Rice (New York, N.Y.) · 2026Article
- Upper-leaf architecture was associated with grain yield variation in anFrontiers in plant science · 2026Article
- The effect of alternate wetting and drying (AWD) on spikelet fertility, grain traits and the biosynthesis of 2-acetyl-1-pyrroline (2-AP) in rice grown under high temperature.BMC plant biology · 2025Article
- Genome-wide identification and expression analysis of the MBD gene family in Broomcorn millet (Panicum miliaceum) and its response to abiotic stress.BMC genomics · 2025Article
- Comprehensive Analysis of the ARF Gene Family Reveals Their Roles in Chinese Chestnut (Biology · 2025Article
- Auxin controls rice root angle via kinase OsILA1-mediated cell wall modifications.Science advances · 2025Article
- A Comprehensive Review of Phenolic Compounds in Horticultural Plants.International journal of molecular sciences · 2025Review
- Article
- The G-protein γ subunit DEP1 facilitates brassinosteroid signaling in rice via a MYB-bHLH-ARF module.The Plant cell · 2025Article
- Genome-wide association study identifies elite alleles of FLA2 and FLA9 controlling flag leaf angle in rice.BMC genomics · 2025Article
- The OsMAPK6-OsWRKY72 module positively regulates rice leaf angle through brassinosteroid signals.Plant communications · 2025Article
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Authors and funding
12 authors at 5 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Flag leaf angle impacts the photosynthetic capacity of densely grown plants and is thus an important agronomic breeding trait for crop architecture and yield. The hormone auxin plays a key role in regulating this trait, yet the underlying molecular and cellular mechanisms remain unclear. Here, we report that two rice (Oryza sativa) auxin response factors (ARFs), OsARF6 and OsARF17, which are highly expressed in lamina joint tissues, control flag leaf angle in response to auxin. Loss-of-function double osarf6 osarf17 mutants displayed reduced secondary cell wall levels of lamina joint sclerenchymatous cells (Scs), resulting in an exaggerated flag leaf angle and decreased grain yield under dense planting conditions. Mechanical measurements indicated that the mutant lamina joint tissues were too weak to support the weight of the flag leaf blade, resembling the phenotype of the rice increased leaf angle1 (ila1) mutant. We demonstrate that OsARF6 and OsARF17 directly bind to the ILA1 promoter independently and synergistically to activate its expression. In addition, auxin-induced ILA1 expression was dependent on OsARF6 and OsARF17. Collectively, our study reveals a mechanism that integrates auxin signaling with the secondary cell wall composition to determine flag leaf angle, providing breeding targets in rice, and potentially other cereals, for this key trait.
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