ArticleNature plants2025
The auxin-PLETHORA 5 module regulates wood fibre development in Populus tomentosa.
Article in Nature plants, 2025. 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.
- Spatiotemporal Metabolome and Single-Nucleus Transcriptome Integration Illuminates an Auxin Gradient Orchestrated by NtTAC1 Underlying Leaf Angle Regulation in Tobacco.Plant biotechnology journal · 2026Article
- Targeting LUX1 to Enhance Wood Biomass Production by Delaying Seasonal Growth Cessation in Populus Trees.Plant, cell & environment · 2026Article
- Evolution of molecular networks underlying plant tissue patterning: insights from conducting tissues.Journal of experimental botany · 2026Review
- Single Cell Multiomics of Hooked Potato Stolons Reveals Parallels to Shoot Apical Meristems in Arabidopsis.Plant biotechnology journal · 2026Article
- Declining wood density.Nature plants · 2025Article
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Authors and funding
13 authors.
Funding
Abstract
Auxin, as a vital phytohormone, is enriched in the vascular cambium, playing a crucial role in regulating wood formation in trees. While auxin's influence on cambial stem cells is well established, the molecular mechanisms underlying the auxin-directed development of cambial derivatives, such as wood fibres, remain elusive in forest trees. Here we identified a transcription factor, AINTEGUMENTA-like 5 (AIL5)/PLETHORA 5 (PLT5) from Populus tomentosa, that is specifically activated by auxin signalling within the vascular cambium. PLT5 regulated both cell expansion and cell wall thickening in wood fibres. Genetic analysis demonstrated that PLT5 is essential for mediating the action of auxin signalling on wood fibre development. Remarkably, PLT5 specifically inhibits the onset of fibre cell wall thickening by directly repressing SECONDARY WALL-ASSOCIATED NAC DOMAIN 1 (SND1) genes. Our findings reveal a sophisticated auxin-PLT5 signalling pathway that finely tunes the development of wood fibres by controlling cell wall thickening.
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Registered trials
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