ArticlePlant physiology2002
Isolation and characterization of a rice dwarf mutant with a defect in brassinosteroid biosynthesis.
Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 116 papers.
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116 citing papers in PubMed.
- Common genetic control for grain filling duration and kernel weight in grain sorghum.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Phytohormones and Shoot Branching: A Mini-Review of Molecular Regulatory Networks and Mechanisms.Plants (Basel, Switzerland) · 2026Review
- OsWRKY11 Regulates Rice Leaf Angle Via Transcriptional Activation of OsGSR1.Rice (New York, N.Y.) · 2026Article
- Development of semi-dwarf Echinacea purpurea by inducing silencing of the endogenous brassinosteroid-biosynthetic gene DWF4.BMC plant biology · 2025Article
- Loci and natural alleles for leaf length and width revealed by a genome wide association study in adzuki bean.BMC plant biology · 2025Article
- Genetic, hormonal, and transcriptomic analyses highlight the crucial role of phytohormones in first branch angle regulation in pepper.BMC plant biology · 2025Article
- Genome-wide association studies reveal genetic diversity and regulatory loci underlying dwarfing traits in banana.Journal of integrative plant biology · 2025Article
- OsBIR3 maintains the homeostasis of OsBRI1, OsREM4.1, and Brd2 protein levels in brassinosteroid pathways in rice.Plant biotechnology journal · 2025Article
- Rice ETHYLENE RESPONSE FACTOR 101 increases leaf angle by upregulating BRASSINOSTEROID UPREGULATED 1.The Plant journal : for cell and molecular biology · 2025Article
- The G-protein γ subunit DEP1 facilitates brassinosteroid signaling in rice via a MYB-bHLH-ARF module.The Plant cell · 2025Article
- Phenotyping, genome-wide dissection, and prediction of maize root architecture for temperate adaptability.iMeta · 2025Article
- Increased chloroplast area in the rice bundle sheath through cell-specific perturbation of brassinosteroid signaling.Plant physiology · 2025Article
- The OsMAPK6-OsWRKY72 module positively regulates rice leaf angle through brassinosteroid signals.Plant communications · 2025Article
- STay tunEd: mutational analysis of theFrontiers in plant science · 2025Article
- Natural variation in the promoter of qRBG1/OsBZR5 underlies enhanced rice yield.Nature communications · 2024Article
- The transcription factor CAMTA2 interacts with the histone acetyltransferase GCN5 and regulates grain weight in wheat.The Plant cell · 2024Article
- Brassinosteroid biosynthesis and signaling: Conserved and diversified functions of core genes across multiple plant species.Plant communications · 2024Review
- The TaSnRK1-TabHLH489 module integrates brassinosteroid and sugar signalling to regulate the grain length in bread wheat.Plant biotechnology journal · 2024Article
- Phylogenomic profiles of whole-genome duplications in Poaceae and landscape of differential duplicate retention and losses among major Poaceae lineages.Nature communications · 2024Article
- A mutation in the brassinosteroid biosynthesis geneHorticulture research · 2024Article
56 more citing papers are in PubMed but not listed here.
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12 authors.
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Abstract
We have isolated a new recessive dwarf mutant of rice (Oryza sativa L. cv Nipponbare). Under normal growth conditions, the mutant has very short leaf sheaths; has short, curled, and frizzled leaf blades; has few tillers; and is sterile. Longitudinal sections of the leaf sheaths revealed that the cell length along the longitudinal axis is reduced, which explains the short leaf sheaths. Transverse sections of the leaf blades revealed enlargement of the motor cells along the dorsal-ventral axis, which explains the curled and frizzled leaf blades. In addition, the number of crown roots was smaller and the growth of branch roots was weaker than those in the wild-type plant. Because exogenously supplied brassinolide considerably restored the normal phenotypes, we designated the mutant brassinosteroid-dependent 1 (brd1). Further, under darkness, brd1 showed constitutive photomorphogenesis. Quantitative analyses of endogenous sterols and brassinosteroids (BRs) indicated that BR-6-oxidase, a BR biosynthesis enzyme, would be defective. In fact, a 0.2-kb deletion was detected in the genomic region of OsBR6ox (a rice BR-6-oxidase gene) in the brd1 mutant. These results indicate that BRs are involved in many morphological and physiological processes in rice, including the elongation and unrolling of leaves, development of tillers, skotomorphogenesis, root differentiation, and reproductive growth, and that the defect of BR-6-oxidase caused the brd1 phenotype.
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