ArticleScientific reports2025
Trichostatin A promotes de novo shoot regeneration from Arabidopsis root explants via a cytokinin related pathway.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- A versatile chemical toolbox drives plant regeneration.Horticulture research · 2026Article
- Histone deacetylases and cell-cycle regulators orchestrate cell-identity transitions during Arabidopsis root regeneration.Molecular plant · 2026Article
- Single-cell RNA sequencing reveals developmental trajectories and environmental regulation of callus formation in Arabidopsis.Stress biology · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
De novo shoot regeneration, characterized by the emergence of adventitious shoots from excised or damaged tissues or organs in vitro, is regulated by the complex interplay between genetic and epigenetic regulatory mechanisms. However, the specific effect of histone deacetylation on shoot regeneration remains poorly understood. This study investigated the effects of trichostatin A (TSA), a histone deacetylase inhibitor, on shoot regeneration in callus derived from root explants. TSA-treated root explants exhibited pronounced callus greening and substantially increasing in multiple shoot formations per callus compared with the control group. Additionally, TSA treatment upregulated shoot apical meristem-specific genes, including WUSCHELL (WUS), RELATED TO AP2.6 L (Rap2.6 L), SHOOT MERISTEMLESS (STM), CUP SHAPED COTYLEDON 2 (CUC2). Notably, TSA treatment enhanced the sensitivity to cytokinins, leading to increase expression of the cytokinin signaling reporter TCS::GFP in the callus. Concomitantly, type-B ARABIDOPSIS RESPONSE REGULATOR (ARR) 10 and 12, which are key regulators of cytokinin signaling, were upregulated in TSA-treated callus, whereas the downstream targets of type-B ARRs, such as ARR5, ARR7, and ARR15, were significantly upregulated during shoot regeneration. Furthermore, mutants deficient in ARR10 and ARR12 showed diminished responsiveness to shoot regenerative capacity, a phenotype that was enhanced by TSA treatment. Our findings underscore the crucial role of histone deacetylation in mediating cytokinin responses and controlling de novo shoot regeneration in plants.
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