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Auxin and Cellular Elongation
Open accessAbstract
Auxin is a crucial growth regulator in plants. However, a comprehensive understanding of how auxin induces cell expansion is perplexing, because auxin acts in a concentration- and cell type-dependent manner. Consequently, it is desirable to focus on certain cell types to exemplify the underlying growth mechanisms. On the other hand, plant tissues display supracellular growth (beyond the level of single cells); hence, other cell types might compromise the growth of a certain tissue. Tip-growing cells do not display neighbor-induced growth constraints and, therefore, are a valuable source of information for growth-controlling mechanisms. Here, we focus on auxin-induced cellular elongation in root hairs, exposing a mechanistic view of plant growth regulation. We highlight a complex interplay between auxin metabolism and transport, steering root hair development in response to internal and external triggers. Auxin signaling modules and downstream cascades of transcription factors define a developmental program that appears rate limiting for cellular growth. With this knowledge in mind, the root hair cell is a very suitable model system in which to dissect cellular effectors required for cellular expansion.
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“A PH-sensitive α-expansin protein in the apoplastic regulates cell wall ductility (Cosgrove, 2005; Velasquez et al., 2016).”
From The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants (2022) · cites this paper as Velasquez et al., 2016
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Cites
Reactive oxygen species produced by NADPH oxidase regulate plant cell growth
Foreman, J., Demidchik, V. V., Bothwell, J. H. F., Mylona, P., Miedema, H., Torres, M. Á. M., Linstead, P., Costa, S., Brownlee, C., Jones, J. D. G., et al. (2003) · Nature · doi:10.1038/nature01485 · Cited by 2,220
The F-box protein TIR1 is an auxin receptor
Dharmasiri, N., Dharmasiri, S., & Estelle, M. (2005) · Nature · doi:10.1038/nature03543 · Cited by 2,083
Cellular organisation of the Arabidopsis thaliana root
Dolan, L., Janmaat, K., Willemsen, V., Linstead, P., Poethig, S., Roberts, K., & Scheres, B. (1993) · Development · doi:10.1242/dev.119.1.71 · Cited by 1,464
A Role for Flavin Monooxygenase-Like Enzymes in Auxin Biosynthesis
Zhao, Y., Christensen, S. K., Fankhauser, C., Cashman, J. R., Cohen, J. D., Weigel, D., & Chory, J. (2001) · Science · doi:10.1126/science.291.5502.306 · Cited by 1,226
ARF7 and ARF19 Regulate Lateral Root Formation via Direct Activation of LBD/ASL Genes in Arabidopsis
Okushima, Y., Fukaki, H., Onoda, M., Theologis, A., & Tasaka, M. (2007) · The Plant Cell · doi:10.1105/tpc.106.047761 · Cited by 1,064
PIN Proteins Perform a Rate-Limiting Function in Cellular Auxin Efflux
Petrášek, J., Mravec, J., Bouchard, R., Blakeslee, J. J., Abas, M., Seifertová, D., Wiśniewska, J., Tadele, Z., Kubeš, M., Čovanová, M., et al. (2006) · Science · doi:10.1126/science.1123542 · Cited by 922
Polar PIN Localization Directs Auxin Flow in Plants
Wiśniewska, J., Xu, J., Seifertová, D., Brewer, P. B., Růžička, K., Blilou, I., Rouquié, D., Benková, E., Scheres, B., & Friml, J. (2006) · Science · doi:10.1126/science.1121356 · Cited by 883
A Peptide Hormone and Its Receptor Protein Kinase Regulate Plant Cell Expansion
Haruta, M., Sabat, G., Stecker, K. E., Minkoff, B. B., & Sussman, M. R. (2014) · Science · doi:10.1126/science.1244454 · Cited by 856
Růžička, K., Ljung, K., Vanneste, S., Podhorská, R., Beeckman, T., Friml, J., & Benková, E. (2007) · The Plant Cell · doi:10.1105/tpc.107.052126 · Cited by 810
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The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants
Xin, G.-Y., Li, L.-P., Wang, P.-T., Li, X.-Y., Han, Y.-J., & Zhao, X. (2022) · Stress Biology · doi:10.1007/s44154-022-00066-x · Cited by 17
Metadata
- Authors
- Velasquez, S. M., Barbez, E., Kleine-Vehn, J., & Estevez, J. M.
- Affiliations
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2016-01-19
- Volume
- 170
- Issue
- 3
- Pages
- 1206-1215
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- PMC
- PMC4775141
- OpenAlex
- W2273365470
- Cited by
- 132
- References
- 120
- Citations by year
- 2026: 17 · 2025: 16 · 2024: 16 · 2023: 7 · 2022: 10 · 2021: 13 · 2020: 15 · 2019: 10 · 2018: 12 · 2017: 11 · 2016: 5
- FWCI
- 14.81
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- PLANT PHYSIOLOGY (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
- Conicet (submittedVersion, cc-by-nc-sa)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant nutrient uptake and metabolism
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
- Keywords
- auxin, cell elongation, root hairs, tip-growing cells, auxin transport, auxin metabolism, auxin signaling, transcription factors, cell expansion, plant growth regulation
- MeSH terms
- Biological Transport, Active, Extracellular Space, Indoleacetic Acids, Models, Biological, Plant Growth Regulators, Transcription Factors, Signal Transduction, Arabidopsis, Plant Roots, Arabidopsis Proteins, Intracellular Space
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- Velasquez, S. M., Barbez, E., Kleine-Vehn, J., & Estevez, J. M. (2016). Auxin and Cellular Elongation. Plant Physiology. https://doi.org/10.1104/pp.15.01863
