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August 1, 2026PLANT PHYSIOLOGYOpen Access

Beyond defense: GTR-mediated uptake of glucosinolates drives growth and structural reprogramming in broccoli seedlings

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Authors

LALorena Albaladejo-MaricóCentro de Edafología y Biología Aplicada del SeguraCKChrista KanstrupUniversity of CopenhagenCCChristoph CrocollUniversity of Copenhagen

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Implication

Randomized trial investigates the impact of glucosinolate transporters on broccoli seedling growth, suggesting metabolic reprogramming.

Key Points

  • This study aims to explore how glucosinolate transporters are involved in the uptake of glucosinolates and their effects on broccoli seedling growth.
  • Investigated exogenous glucosinolate uptake using Xenopus laevis oocyte expression and confocal microscopy.
  • Applied RNA-seq analysis to assess gene expression and metabolic changes in response to glucosinolates.
  • Characterized transporters BolGTR1.2, BolGTR2.2, BolGTR2.3, and BolGTR3.3 for their efficiency in translocating glucosinolates.
  • Broccoli seedlings actively uptake glucosinolates through the root system, leading to increased seedling biomass.
  • GSL internalization triggers a biphasic response with an initial consumption phase followed by upregulation of biosynthetic genes by day 7.
  • Induction of cell wall remodeling genes (XTH, PAE8, GAE) supports structural growth without the need for sulfate reduction.

Cite This Study

Albaladejo-Maricó et al. (2026) studied this question.

synapsesocial.com/papers/6a6d9874e258b358b3c6bde3https://doi.org/10.1093/plphys/kiag556
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