Spatiotemporal formation of glands in plants is modulated by MYB-like transcription factors

Jiang Chang, Shurong Wu, Ting You, Jianfeng Wang, Bingjing Sun, Bojun Xu, Xiaochun Xu, Yaping Zhang and Shuang Wu ()
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Jiang Chang: Fujian Agriculture and Forestry University
Shurong Wu: Fujian Agriculture and Forestry University
Ting You: Fujian Agriculture and Forestry University
Jianfeng Wang: Fujian Agriculture and Forestry University
Bingjing Sun: Fujian Agriculture and Forestry University
Bojun Xu: Fujian Agriculture and Forestry University
Xiaochun Xu: Fujian Agriculture and Forestry University
Yaping Zhang: Fujian Agriculture and Forestry University
Shuang Wu: Fujian Agriculture and Forestry University

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract About one third of vascular plants develop glandular trichomes, which produce defensive compounds that repel herbivores and act as a natural biofactory for important pharmaceuticals such as artemisinin and cannabinoids. However, only a few regulators of glandular structures have been characterized so far. Here we have identified two closely-related MYB-like genes that redundantly inhibit the formation of glandular cells in tomatoes, and they are named as GLAND CELL REPRESSOR (GCR) 1 and 2. The GCR genes highly express in the apical cells of tomato trichomes, with expression gradually diminishing as the cells transition into glands. The spatiotemporal expression of GCR genes is coordinated by a two-step inhibition process mediated by SlTOE1B and GCRs. Furthermore, we demonstrate that the GCR genes act by suppressing Leafless (LFS), a gene that promotes gland formation. Intriguingly, homologous GCR genes from tobacco and petunia also inhibit gland formation, suggesting that the GCR-mediated repression mechanism likely represents a conserved regulatory pathway for glands across different plant species.

Date: 2024
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DOI: 10.1038/s41467-024-46683-0

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