ArticlePlant physiology2023
Hormone-regulated expansins: Expression, localization, and cell wall biomechanics in Arabidopsis root growth.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.
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Who cites it
29 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.
- Machine-learning meta-analysis reveals ethylene as a central component of the molecular core in abiotic stress responses in Arabidopsis.Nature communications · 2025Pooled it
- SOBIR1 integrates pathogen recognition and hormonal metabolism in Nicotiana tabacum.Plant physiology · 2026Article
- TheInternational journal of molecular sciences · 2026Article
- Dexamethasone-inducible LhGR/pOp system: simple and flexible spatiotemporal control of gene expression.Planta · 2026Review
- Genome-wide characterization of the expansin gene family in Sorghum bicolor reveals their regulatory features and roles in drought response.BMC plant biology · 2026Article
- A tissue-resolved, network-based transcriptomic framework for abiotic stress responses in sorghum.The Plant journal : for cell and molecular biology · 2026Article
- Dissecting the genetic architecture of early root-related traits in grapevine rootstocks across propagation methods and different scion.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- The mechanical properties ofScience advances · 2026Article
- Root cell wall plasticity in iron homeostasis: an overlooked frontier in plant nutrition.The New phytologist · 2026Review
- The function of the Arabidopsis receptor kinase THESEUS1 in plant cell wall integrity maintenance: from evolutionary origin to future perspectives.The Plant journal : for cell and molecular biology · 2026Review
- Cambium LBDs promote radial growth by regulating PLL-mediated pectin metabolism.Nature plants · 2025Article
- The ZAT14 family promotes cell death and regulates expansins to affect xylem formation and salt tolerance in Arabidopsis.The Plant cell · 2025Article
- To grow or not to grow: the enigma of plant root growth dynamism.Plant molecular biology · 2025Review
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- Identification of a Specific Role of Dihydrozeatin in the Regulation of the Cell Differentiation Activity inPlants (Basel, Switzerland) · 2025Article
- MhIDA small peptides modulate the growth and development of roots in Malus hupehensis.Plant cell reports · 2025Article
- Modulation of morphogenesis and metabolism by plant cell biomechanics: from model plants to traditional herbs.Horticulture research · 2025Article
- Micromechanical behavior of the apple fruit cuticle investigated by Brillouin light scattering microscopy.Communications biology · 2025Article
- Multifunctional Role of Cytokinin in Horticultural Crops.International journal of molecular sciences · 2025Review
Corrections and comments
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Authors and funding
16 authors at 7 institutions in 5 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Expansins facilitate cell expansion by mediating pH-dependent cell wall (CW) loosening. However, the role of expansins in controlling CW biomechanical properties in specific tissues and organs remains elusive. We monitored hormonal responsiveness and spatial specificity of expression and localization of expansins predicted to be the direct targets of cytokinin signaling in Arabidopsis (Arabidopsis thaliana). We found EXPANSIN1 (EXPA1) homogenously distributed throughout the CW of columella/lateral root cap, while EXPA10 and EXPA14 localized predominantly at 3-cell boundaries in the epidermis/cortex in various root zones. EXPA15 revealed cell-type-specific combination of homogenous vs. 3-cell boundaries localization. By comparing Brillouin frequency shift and AFM-measured Young's modulus, we demonstrated Brillouin light scattering (BLS) as a tool suitable for non-invasive in vivo quantitative assessment of CW viscoelasticity. Using both BLS and AFM, we showed that EXPA1 overexpression upregulated CW stiffness in the root transition zone (TZ). The dexamethasone-controlled EXPA1 overexpression induced fast changes in the transcription of numerous CW-associated genes, including several EXPAs and XYLOGLUCAN:XYLOGLUCOSYL TRANSFERASEs (XTHs), and associated with rapid pectin methylesterification determined by in situ Fourier-transform infrared spectroscopy in the root TZ. The EXPA1-induced CW remodeling is associated with the shortening of the root apical meristem, leading to root growth arrest. Based on our results, we propose that expansins control root growth by a delicate orchestration of CW biomechanical properties, possibly regulating both CW loosening and CW remodeling.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.