ArticleThe Plant cell2026
Tyrosine-sulfated peptide-induced flavonol biosynthesis controls elongation and differentiation in Arabidopsis primary root.
Article in The Plant cell, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- The Sulfated PSY Peptide Negatively Regulates Receptor Kinase Activity to Promote Growth.bioRxiv : the preprint server for biology · 2026Article
- The gatekeeper: how PSY1 controls root growth.The Plant cell · 2026Article
- Reduced methane emissions in transgenic rice genotypes are associated with altered rhizosphere microbial hydrogen cycling.Nature communications · 2026Article
- Transcription factor-promoter interactions forbioRxiv : the preprint server for biology · 2025Article
- Evidence for Early Evolution of Sulfated Peptide Signaling in Plant Development.bioRxiv : the preprint server for biology · 2025Article
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10 authors.
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Abstract
In Arabidopsis (Arabidopsis thaliana) roots, growth initiation and cessation are organized into distinct zones. How regulatory mechanisms are integrated to coordinate these processes and maintain proper growth progression over time remains poorly understood. Here, we demonstrate that the peptide hormone PLANT PEPTIDE CONTAINING SULFATED TYROSINE 1 (PSY1) promotes root growth by controlling cell elongation. Higher levels of PSY1 lead to longer differentiated cells with a shootward displacement of characteristics common to mature cells. PSY1 activates genes involved in the biosynthesis of flavonols, a group of plant-specific specialized metabolites. Consistent with these transcriptional changes, metabolomic analysis reveals an enrichment of diverse flavonol glycosides upon PSY1 treatment. Using genetic and chemical approaches, we show that PSY1-mediated flavonol accumulation is localized to the differentiation zone and is required for PSY1 function. PSY1 signaling in this zone is associated with a reduction of hydrogen peroxide accumulation and a decrease in auxin-induced gene expression. These findings support a model where PSY1 signals the developmental-specific accumulation of specialized metabolites to regulate the extent of cell elongation and progression to maturation.
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