ArticlePlant biotechnology journal2024
GhSBI1, a CUP-SHAPED COTYLEDON 2 homologue, modulates branch internode elongation in cotton.
Article in Plant biotechnology journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Phytohormones and Shoot Branching: A Mini-Review of Molecular Regulatory Networks and Mechanisms.Plants (Basel, Switzerland) · 2026Review
- Branch architecture and flowering time are separately regulated by GhFL and GhSP2 in cotton.The Plant journal : for cell and molecular biology · 2026Article
- PpBRC1 negatively regulates branching via modulating GA signal transduction gene PpGID1b in peach (Prunus persica).Plant cell reports · 2026Article
- Identifying Candidate Genes for Cotton Fruit Branch Length Using BSA-Seq and RNA-Seq.Plants (Basel, Switzerland) · 2026Article
- Genome-wide association study reveals significant loci and candidate genes for fruit branch length in upland cotton.The plant genome · 2025Article
- RNA Interference-Mediated Suppression ofBiology · 2025Article
- Transcriptome sequencing revealed the regulation of stem internode length associated with mechanical harvesting in three tea varieties.Frontiers in plant science · 2025Article
- Epigenetic Regulation of Cotton Plant Height by Histone Acetyltransferase GhHAT11 via Hormonal Pathway Modulation.Physiologia plantarumArticle
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Authors and funding
11 authors.
Funding
Abstract
Branch length is an important plant architecture trait in cotton (Gossypium) breeding. Development of cultivars with short branch has been proposed as a main object to enhance cotton yield potential, because they are suitable for high planting density. Here, we report the molecular cloning and characterization of a semi-dominant quantitative trait locus, Short Branch Internode 1(GhSBI1), which encodes a NAC transcription factor homologous to CUP-SHAPED COTYLEDON 2 (CUC2) and is regulated by microRNA ghr-miR164. We demonstrate that a point mutation found in sbi1 mutants perturbs ghr-miR164-directed regulation of GhSBI1, resulting in an increased expression level of GhSBI1. The sbi1 mutant was sensitive to exogenous gibberellic acid (GA) treatments. Overexpression of GhSBI1 inhibited branch internode elongation and led to the decreased levels of bioactive GAs. In addition, gene knockout analysis showed that GhSBI1 is required for the maintenance of the boundaries of multiple tissues in cotton. Transcriptome analysis revealed that overexpression of GhSBI1 affects the expression of plant hormone signalling-, axillary meristems initiation-, and abiotic stress response-related genes. GhSBI1 interacted with GAIs, the DELLA repressors of GA signalling. GhSBI1 represses expression of GA signalling- and cell elongation-related genes by directly targeting their promoters. Our work thus provides new insights into the molecular mechanisms for branch length and paves the way for the development of elite cultivars with suitable plant architecture in cotton.
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