ArticlePlant molecular biology2020
The basic helix-loop-helix transcription factor OsBLR1 regulates leaf angle in rice via brassinosteroid signalling.
Article in Plant molecular biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 44 citations in OpenAlex.
- Exploration of the signaling pathway involving OsCSN8 in regulating the leaf angle of rice.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- bHLH Transcription Factors in Cereal Crops: Diverse Functions in Regulating Growth, Development and Stress Responses.International journal of molecular sciences · 2025Review
- Recent advances in improving yield and immunity through transcription factor engineering.Journal of integrative plant biology · 2025Review
- Article
- Prohexadione calcium and KHBMC plant biology · 2025Article
- SlUPA-like, a bHLH Transcription Factor in Tomato (International journal of molecular sciences · 2024Article
- Major quantitative trait locus qLA3.1 is related to tomato leaf angle by regulating cell length at the petiole base.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Fine-mapping and validation of the major quantitative trait locus QFlANG-4B for flag leaf angle in wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Sugar starvation activates the OsSnRK1a-OsbHLH111/OsSGI1-OsTPP7 module to mediate growth inhibition of rice.Plant biotechnology journal · 2023Article
- Genomic regions and candidate genes selected during the breeding of rice in Vietnam.Evolutionary applications · 2022Article
- RIP2 interacts with REL1 to control leaf architecture by modulating brassinosteroid signaling in rice.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022Article
- The vital hormone 20-hydroxyecdysone controls ATP production by upregulating binding of trehalase 1 with ATP synthase subunit α in Helicoverpa armigera.The Journal of biological chemistry · 2022Article
- The uncommon function and mechanism of the common enzyme glyceraldehyde-3-phosphate dehydrogenase in the metamorphosis ofFrontiers in bioengineering and biotechnology · 2022Article
- Modulation of Rice Leaf Angle and Grain Size by ExpressingInternational journal of molecular sciences · 2021Article
- Genetic regulation of shoot architecture in cucumber.Horticulture research · 2021Review
- Synergistic Interaction of Phytohormones in Determining Leaf Angle in Crops.International journal of molecular sciences · 2020Review
- Overexpression ofFrontiers in plant science · 2020Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
Leaf angle is a key factor in plant architecture and crop yield. Brassinosteroids (BRs) regulate many developmental processes, especially the leaf angle in monocots. However, the BR signalling pathway is complex and includes many unknown members. Here, we propose that Oryza sativa BRASSINOSTEROID-RESPONSIVE LEAF ANGLE REGULATOR 1 (OsBLR1) encodes a bHLH transcription factor, and positively regulates BR signalling to increase the leaf angle and grain length in rice (Oryza sativa L.). Lines overexpressing OsBLR1 (blr1-D and BLR1-OE-1/2/3) had similar traits, with increased leaf angle and grain length. Conversely, OsBLR1-knockout mutants (blr1-1/2/3) had erect leaves and shorter grains. Lamina joint inclination, coleoptile elongation, and root elongation assay results indicated that these overexpression lines were more sensitive to BR, while the knockout mutants were less sensitive. There was no significant difference in the endogenous BR contents of blr1-1/2 and wild-type plants. These results suggest that OsBLR1 is involved in BR signal transduction. The blr1-D mutant, with increased cell growth in the lamina joint and smaller leaf midrib, showed significant changes in gene expression related to the cell wall and leaf development compared with wild-type plants; furthermore, the cellulose and protopectin contents in blr1-D were reduced, which resulted in the increased leaf angle and bent leaves. As the potential downstream target gene of OsBLR1, the REGULATOR OF LEAF INCLINATION1 (OsRLI1) gene expression was up-regulated in OsBLR1-overexpression lines and down-regulated in OsBLR1-knockout mutants. Moreover, we screened OsRACK1A as an interaction protein of OsBLR1 using a yeast two-hybrid assay and glutathione-S-transferase pull-down.
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