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Updated: Sep 5, 2025

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Brassinosteroid signaling restricts root lignification by antagonizing SHORT-ROOT function in Arabidopsis

Meng Li1, Pengxue Li1, Chunhua Wang1

  • 1College of Life Science & College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.

Plant Physiology
|July 9, 2022
PubMed
Summary

Brassinosteroid (BR) signaling inhibits root lignification in the elongation zone by repressing SHORT-ROOT (SHR). Declining BR signaling in mature zones releases SHR, initiating lignification for essential water and nutrient transport in Arabidopsis thaliana roots.

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