Abstract
The growth of multicellular organisms relies on cell proliferation, elongation and differentiation that are tightly regulated throughout development by internal and external stimuli. The plasticity of a growth response largely depends on the capacity of the organism to adjust the ratio between cell proliferation and cell differentiation. The primary root of Arabidopsis thaliana offers many advantages toward understanding growth homeostasis as root cells are continuously produced and move from cell proliferation to elongation and differentiation that are processes spatially separated and could be studied along the longitudinal axis. Hormones fine tune plant growth responses and a huge amount of information has been recently generated on the role of these compounds in Arabidopsis primary root development. In this review, we summarized the participation of nine hormones in the regulation of the different zones and domains of the Arabidopsis primary root. In some cases, we found synergism between hormones that function either positively or negatively in proliferation, elongation or differentiation. Intriguingly, there are other cases where the interaction between hormones exhibits unexpected results. Future analysis on the molecular mechanisms underlying crosstalk hormone action in specific zones and domains will unravel their coordination over PR development.
Original language | English |
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Article number | 659155 |
Pages (from-to) | 1-20 |
Journal | Frontiers in Plant Science |
Volume | 12 |
DOIs | |
Publication status | Published - 26 Apr 2021 |
Externally published | Yes |
Bibliographical note
Funding Information:This study was financed with the following grants: AG-A, BG-P, MP, and EÁ-B received funding from UNAM-DGAPA-PAPIIT (IN200920, IN206220, IN203220, and IN211721) and CONACyT 102959 (AG-A) and 102987 (MP). EZ-M is a Ph.D. student from: Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México (UNAM) and has received a CONACyT fellowship (579738). BL-R received a postdoctoral fellowship from CONACyT (489444).
Funding Information:
We would like to thank Dr. Diana Bel??n S??nchez Rodr?guez for logistical and technical support, to Dr. Jos? L?pez-Bucio (Universidad Michoacana de San Nicol?s de Hidalgo) for comments on the manuscript and to the two reviewers that helped to improve this review. Funding. This study was financed with the following grants: AG-A, BG-P, MP, and E?-B received funding from UNAM-DGAPA-PAPIIT (IN200920, IN206220, IN203220, and IN211721) and CONACyT 102959 (AG-A) and 102987 (MP). EZ-M is a Ph.D. student from: Programa de Doctorado en Ciencias Biom?dicas, Universidad Nacional Aut?noma de M?xico (UNAM) and has received a CONACyT fellowship (579738). BL-R received a postdoctoral fellowship from CONACyT (489444).
Publisher Copyright:
© Copyright © 2021 Zluhan-Martínez, López-Ruíz, García-Gómez, García-Ponce, de la Paz Sánchez, Álvarez-Buylla and Garay-Arroyo.
Funding
This study was financed with the following grants: AG-A, BG-P, MP, and EÁ-B received funding from UNAM-DGAPA-PAPIIT (IN200920, IN206220, IN203220, and IN211721) and CONACyT 102959 (AG-A) and 102987 (MP). EZ-M is a Ph.D. student from: Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México (UNAM) and has received a CONACyT fellowship (579738). BL-R received a postdoctoral fellowship from CONACyT (489444). We would like to thank Dr. Diana Bel??n S??nchez Rodr?guez for logistical and technical support, to Dr. Jos? L?pez-Bucio (Universidad Michoacana de San Nicol?s de Hidalgo) for comments on the manuscript and to the two reviewers that helped to improve this review. Funding. This study was financed with the following grants: AG-A, BG-P, MP, and E?-B received funding from UNAM-DGAPA-PAPIIT (IN200920, IN206220, IN203220, and IN211721) and CONACyT 102959 (AG-A) and 102987 (MP). EZ-M is a Ph.D. student from: Programa de Doctorado en Ciencias Biom?dicas, Universidad Nacional Aut?noma de M?xico (UNAM) and has received a CONACyT fellowship (579738). BL-R received a postdoctoral fellowship from CONACyT (489444).
Keywords
- Arabidopsis
- cell differentiation
- cell elongation
- cell proliferation
- hormones
- primary root
- root apical meristem