ArticleJournal of experimental botany2023
The transcription factor SPL13 mediates strigolactone suppression of shoot branching by inhibiting cytokinin synthesis in Solanum lycopersicum.
Article in Journal of experimental botany, 2023. 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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17 citing papers in PubMed, 22 citations in OpenAlex.
- Genome-wide characterization of MADS-box genes and their roles in axillary bud development in tobacco.Plant cell reports · 2026Article
- Strigolactone-mediated architecture regulation and stress resilience: Insights and innovations for crop breeding.Journal of integrative plant biology · 2026Review
- DNA hypomethylation enables the transcriptional repressor SlSPL-CNR to control fruit flavor ester biosynthesis.Nature communications · 2026Article
- Gene Editing of Nicotiana benthamiana Architecture for Space-Efficient Production of Recombinant Proteins in Closed Environments.Plant biotechnology journal · 2026Article
- Article
- Graft compatibility emerges from the balance between regeneration and immunity: lessons from plant-plant interactions.Frontiers in plant science · 2026Review
- Topping-induced transcriptome changes reveal PaSPL-mediated regulation of plant architecture in Platanus acerifolia.Plant molecular biology · 2025Article
- Strigolactone insensitivity affects the hormonal homeostasis in barley.Scientific reports · 2025Article
- Article
- TheFrontiers in plant science · 2025Article
- The SBP-box transcription factor PlSPL2 negatively regulates stem development in herbaceous peony.Plant cell reports · 2024Article
- Cytokinin and reproductive shoot architecture: bigger and better?Biochemical Society transactions · 2024Review
- Comparative Transcriptome Analysis Reveals Inhibitory Roles of Strigolactone in Axillary Bud Outgrowth in Ratoon Rice.Plants (Basel, Switzerland) · 2024Article
- Recent Advances in Tomato Gene Editing.International journal of molecular sciences · 2024Review
- Identification and expression of strigolactone biosynthesis and signaling genes and the in vitro effects of strigolactones in olive (Plant direct · 2024Article
- New Advances in the Study of Regulation of Tomato Flowering-Related Genes Using Biotechnological Approaches.Plants (Basel, Switzerland) · 2024Review
- SlSPL15: A Negative Regulator Targeted by SlmiR156a Participates in Regulating the Light-Induced Anthocyanin Biosynthesis of Aft Tomato Fruits.Physiologia plantarumArticle
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Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plant architecture imposes a large impact on crop yield. IDEAL PLANT ARCHITECTURE 1 (IPA1), which encodes a SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) transcription factor, is a target of molecular design for improving grain yield. However, the roles of SPL transcription factors in regulating tomato (Solanum lycopersicum) plant architecture are unclear. Here, we show that the expression of SPL13 is down-regulated in the lateral buds of strigolactone (SL)-deficient ccd mutants and is induced by GR24 (a synthetic analog of SL). Knockout of SPL13 by CRISPR/Cas9 resulted in higher levels of cytokinins (CKs) and transcripts of the CK synthesis gene ISOPENTENYL TRANSFERASES 1 (IPT1) in the stem nodes, and more growth of lateral buds. GR24 suppresses CK synthesis and lateral bud growth in ccd mutants, but is not effective in spl13 mutants. On the other hand, silencing of the IPT1 gene inhibited bud growth of spl13 mutants. Interestingly, SL levels in root extracts and exudates are significantly increased in spl13 mutants. Molecular studies indicated that SPL13 directly represses the transcription of IPT1 and the SL synthesis genes CAROTENOID CLEAVAGE DIOXYGENASE 7 (CCD7) and MORE AXILLARY GROWTH 1 (MAX1). The results demonstrate that SPL13 acts downstream of SL to suppress lateral bud growth by inhibiting CK synthesis in tomato. Tuning the expression of SPL13 is a potential approach for decreasing the number of lateral shoots in tomato.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.