Tissue growth constrains root organ outlines into an isometrically scalable shape

Fujiwara, Motohiro; Goh, Tatsuaki; Tsugawa, Satoru; Nakajima, Keiji; Fukaki, Hidehiro; Fujimoto, Koichi

doi:10.1242/dev.196253

Cited by 12 publications

(5 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Overall, several multicellular root anatomical models can be found in the literature, either independent or implementing these frameworks (Band et al, 2012a; Hodgman & Ajmera, 2015; Rutten & Ten Tusscher, 2019). Most of these are primarily focused on capturing developmental aspects of root biology including hormone dynamics (Band et al, 2012b, 2012c, 2014; Mellor et al, 2016, 2020; Xuan et al, 2016), vascular patterning (De Rybel et al, 2014; el‐Showk et al, 2015; Muraro et al, 2014) and biomechanics involving lateral root emergence (Fujiwara et al, 2021; Péret et al, 2013), root growth and bending (Dietrich et al, 2017; Fozard et al, 2013, 2016; Jensen & Fozard, 2015). To our knowledge, only a few multicellular root anatomy models exist that capture the flux dynamics of water (Couvreur et al, 2018; Heymans et al, 2021) and phosphorus (Ajmera, 2016) implementing realistic root geometry.…”

Section: Introductionmentioning

confidence: 99%

RootSlice—A novel functional‐structural model for root anatomical phenotypes

Sidhu

Ajmera

Arya

et al. 2023

Plant Cell & Environment

View full text Add to dashboard Cite

Root anatomy is an important determinant of root metabolic costs, soil exploration, and soil resource capture. Root anatomy varies substantially within and among plant species. RootSlice is a multicellular functional-structural model of root anatomy developed to facilitate the analysis and understanding of root anatomical phenotypes. RootSlice can capture phenotypically accurate root anatomy in three dimensions of different root classes and developmental zones, of both monocotyledonous and dicotyledonous species. Several case studies are presented illustrating the capabilities of the model. For maize nodal roots, the model illustrated the role of vacuole expansion in cell elongation; and confirmed the individual and synergistic role of increasing root cortical aerenchyma and reducing the number of cortical cell files in reducing root metabolic costs. Integration of RootSlice for different root zones as the temporal properties of the nodal roots in the whole-plant and soil model OpenSimRoot/maize enabled the multiscale evaluation of root anatomical phenotypes, highlighting the role of aerenchyma formation in enhancing the utility of cortical cell files for improving plant performance over varying soil nitrogen supply. Such integrative in silico approaches present avenues for exploring the fitness landscape of root anatomical phenotypes.

show abstract

Section: Introductionmentioning

confidence: 99%

RootSlice—A novel functional‐structural model for root anatomical phenotypes

Sidhu

Ajmera

Arya

et al. 2023

Plant Cell & Environment

View full text Add to dashboard Cite

show abstract

“…The obtained shape resembled a bacterial colony grown on inhomogeneous environment (Tasaki et al, 2017), that seems to be brought by the proliferations of linked cells on the edge. Such regularities to positional information may follow the morphogenetic robustness in development and regeneration as described in (Thompson, 1917;Niklas, 1994;Fujiwara et al, 2021), and so on.…”

Section: Discussionmentioning

confidence: 93%

Expansive growths with uniaxial gradients can explain formation of oblong diversity observed in two-dimensional leaf shapes

Nakamasu

2022

Preprint

View full text Add to dashboard Cite

Regulation of positional information in fields with different sizes are known as scaling in the area of morphogenesis, and enable integrated and robust developmental processes. Although it is known that interpretation of such scaled patterns leads to formations of relative shapes, the same positional information brings about diversities in morphogenesis. In this research, a boundary of a two-dimensional shape was constructed by propagating points and segments connecting them for a description of a growing form. Cell expansion with or without cell proliferation were implemented using different simple algorithms, as additive growth and expansive growth, respectively. When the different types of growth algorithm with a biased restriction were calculated, the additive growth maintained a relative shape corresponding to the gradients with different lengths. However, diverse shapes were generated by the gradients in the cases of expansive growth and its combinations even with negate effects by additive growth. As an operative example of this attempt, leaf shapes with smooth margins were calculated using a combination of these growth algorithms. Finally, we concluded that different algorithms brought different responses against the simple positional information, i.e., additive growth always governed by it or expansive growth can escape it. It was predicted theoretically that an expansive growth has a capacity to become a generator of diversity at least in leaf morphogenesis.

show abstract

“…This process is facilitated by a filament extruded from the bacteria, making contact with the substrate and inducing shock propagation [62]. Other applications of catenaries to biology include the examination of plant root tip outlines [63], and the development of growth models [64]. Moreover, the study of simple elastic systems under gravity is useful to better understand the role of biological structures, for example, the cytoskeleton, in the process of sensing gravity by cells [65][66][67].…”

Section: Introductionmentioning

confidence: 99%

Variational approaches to the elasticity of deformable strings with and without mass redistribution

Giordano

2024

Z Angew Math Mech

View full text Add to dashboard Cite

The catenary is a curve that has played a significant role in the history of mathematics, finding applications in various disciplines such as mechanics, technology, architecture, the arts, and biology. In this paper, we introduce some generalizations by applying the variational method to deformable strings. We explore two specific cases: (i) in the first case, we investigate the nonlinear behavior of an elastic string with variable length, dependent on the applied boundary conditions; specifically, this analysis serves to introduce the variational method and demonstrate the process of finding analytical solutions; (ii) in the second case, we examine a deformable string with a constant length; however, we introduce mass redistribution within the string through nonlinear elastic interactions. In the first scenario, the deformation state of the string always describes elongation, as compression states prove to be unstable for fully flexible strings. In contrast, in the second scenario, the finite length constraint induces compressive states in specific configurations and regions of the string. However, it is worth noting that the solution to this problem exists only for values of the elastic constant that are not too low, a phenomenon that is studied in detail. We conduct here both analytical and graphical analyses of various geometries, comparing the elastic behavior of the two aforementioned types of strings. Understanding the elastic behavior of deformable strings, especially the second type involving mass redistribution, is crucial for enhancing comprehension in the study of biological filaments or fibers and soft matter. For instance, these investigations can contribute to understanding the mechanisms employed by cells to sense gravity or other mechanical conditions.

show abstract

Tissue growth constrains root organ outlines into an isometrically scalable shape

Cited by 12 publications

References 67 publications

RootSlice—A novel functional‐structural model for root anatomical phenotypes

RootSlice—A novel functional‐structural model for root anatomical phenotypes

Expansive growths with uniaxial gradients can explain formation of oblong diversity observed in two-dimensional leaf shapes

Variational approaches to the elasticity of deformable strings with and without mass redistribution

Contact Info

Product

Resources

About