Abstract
AbstractAbout 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.
Publisher
Springer Science and Business Media LLC
Reference62 articles.
1. Werker, E. Trichome diversity and development. Adv. Bot. Res. 31, 1–35 (2000).
2. Reis, C., Sajo, M. G. & Stehmann, J. R. Leaf structure and taxonomy of Petunia and Calibrachoa (Solanaceae). Braz. Arch. Biol. Techol. 45, 59–66 (2002).
3. Schnittger, A. & Hülskamp, M. Trichome morphogenesis: a cell-cycle perspective. Philos. Trans. R. Soc. Lond. B. Biol. Sci. 357, 823–826 (2002).
4. Fahn, A. Structure and function of secretory cells. Adv. Bot. Res. 31, 37–75 (2000).
5. Callow, J. A., Hallahan, D. L. & Gray, J. C. (eds). Advances in Botanical Research: Plant Trichomes. Vol. 31, 311 (Academic Press, 2000).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献