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The root cap cuticle: a cell wall structure for seedling establishment and lateral root formation

(2019) CELL. 176. p.1367-1378
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Abstract
The root cap surrounding the tip of plant roots is thought to protect the delicate stem cells in the root meristem. We discovered that the first layer of root cap cells is covered by an electron-opaque cell wall modification resembling a plant cuticle. Cuticles are polyester-based protective structures considered exclusive to aerial plant organs. Mutations in cutin biosynthesis genes affect the composition and ultrastructure of this cuticular structure, confirming its cutin-like characteristics. Strikingly, targeted degradation of the root cap cuticle causes a hypersensitivity to abiotic stresses during seedling establishment. Furthermore, lateral root primordia also display a cuticle that, when defective, causes delayed outgrowth and organ deformations, suggesting that it facilitates lateral root emergence. Our results show that the previously unrecognized root cap cuticle protects the root meristem during the critical phase of seedling establishment and promotes the efficient formation of lateral roots.
Keywords
Arabidopsis, cell wall, diffusion barrier, lateral root, lateral root emergence, plant cuticle, primary root, root cap, root development, seedling

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Citation

Please use this url to cite or link to this publication:

Chicago
Berhin, Alice, Damien de Belllis, Rochus B Franke, Rafael Andrade Buono, Moritz Nowack, and Christiane Nawrath. 2019. “The Root Cap Cuticle: a Cell Wall Structure for Seedling Establishment and Lateral Root Formation.” Cell 176: 1367–1378.
APA
Berhin, Alice, de Belllis, D., Franke, R. B., Andrade Buono, R., Nowack, M., & Nawrath, C. (2019). The root cap cuticle: a cell wall structure for seedling establishment and lateral root formation. CELL, 176, 1367–1378.
Vancouver
1.
Berhin A, de Belllis D, Franke RB, Andrade Buono R, Nowack M, Nawrath C. The root cap cuticle: a cell wall structure for seedling establishment and lateral root formation. CELL. 2019;176:1367–78.
MLA
Berhin, Alice et al. “The Root Cap Cuticle: a Cell Wall Structure for Seedling Establishment and Lateral Root Formation.” CELL 176 (2019): 1367–1378. Print.
@article{8606053,
  abstract     = {The root cap surrounding the tip of plant roots is thought to protect the delicate stem cells in the root meristem. We discovered that the first layer of root cap cells is covered by an electron-opaque cell wall modification resembling a plant cuticle. Cuticles are polyester-based protective structures considered exclusive to aerial plant organs. Mutations in cutin biosynthesis genes affect the composition and ultrastructure of this cuticular structure, confirming its cutin-like characteristics. Strikingly, targeted degradation of the root cap cuticle causes a hypersensitivity to abiotic stresses during seedling establishment. Furthermore, lateral root primordia also display a cuticle that, when defective, causes delayed outgrowth and organ deformations, suggesting that it facilitates lateral root emergence. Our results show that the previously unrecognized root cap cuticle protects the root meristem during the critical phase of seedling establishment and promotes the efficient formation of lateral roots.},
  author       = {Berhin, Alice and de Belllis, Damien and Franke, Rochus B and Andrade Buono, Rafael and Nowack, Moritz and Nawrath, Christiane},
  issn         = {0092-8674},
  journal      = {CELL},
  language     = {eng},
  pages        = {1367--1378},
  title        = {The root cap cuticle: a cell wall structure for seedling establishment and lateral root formation},
  url          = {http://dx.doi.org/10.1016/j.cell.2019.01.005},
  volume       = {176},
  year         = {2019},
}

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