Theoretical models for branch formation in plants

Nakamasu, Akiko; Higaki, Takumi

doi:10.1007/s10265-019-01107-9

Cited by 4 publications

(2 citation statements)

References 84 publications

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“…1J). A characteristic rule mentioned in (Nakamasu et al ., 2014; Nakamasu et al ., 2017, Nakamasu and Higaki, 2019) was followed in the branch arrangements caused by positional information with different wave lengths of periodicity.…”

Section: Resultsmentioning

confidence: 99%

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

Nakamasu

2022

Preprint

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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.

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Section: Resultsmentioning

confidence: 99%

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

Nakamasu

2022

Preprint

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“…Plants construct a characteristic architecture by extending their branches at certain angles ( Wang and Jiao 2018 , Nakamasu and Higaki 2019 ). Plant architecture may contribute to both acquisition of resources such as light and water, and reduction of mechanical load due to the weight of the branches, leaves or snow accumulation.…”

Section: Introductionmentioning

confidence: 99%

A Three-Dimensional Scanning System for Digital Archiving and Quantitative Evaluation of Arabidopsis Plant Architectures

Kunita

Morita

Toda

et al. 2021

Plant and Cell Physiology

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A plant’s architecture contributes to its ability to acquire resources and reduce mechanical load. Arabidopsis thaliana is the most common model plant in molecular biology, and there are several mutants and transgenic lines with modified plant architecture regulation, such as lazy1 mutants, which have reversed angles of lateral branches. Although some phenotyping methods have been used in larger agricultural plants, limited suitable methods are available for three-dimensional reconstruction of Arabidopsis, which is smaller and has more uniform surface textures and structures. An inexpensive, easily adopted three-dimensional reconstruction system that can be used for Arabidopsis is needed so that researchers can view and quantify morphological changes over time. We developed a three-dimensional reconstruction system for A. thaliana using the visual volume intersection method, which uses a fixed camera to capture plant images from multiple directions while the plant slowly rotates. We then developed a script to autogenerate stack images from the obtained input movie and visualized the plant architecture by rendering the output stack image using a general bioimage analysis software. We successfully three-dimensionally and time-sequentially scanned wild-type and lazy1 mutant A. thaliana plants and measured the angles of the lateral branches. This non-contact, non-destructive method requires no specialized equipment and is space efficient, inexpensive, and easily adopted by Arabidopsis researchers. Consequently, this system will promote three- and four-dimensional phenotyping of this model plant, and it can be used in combination with molecular genetics to further elucidate the molecular mechanisms that regulate Arabidopsis architecture.

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With gratitude from the Editor-in-Chief of the Journal of Plant Research

Hikosaka

2021

J Plant Res

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Theoretical models for branch formation in plants

Cited by 4 publications

References 84 publications

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

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

A Three-Dimensional Scanning System for Digital Archiving and Quantitative Evaluation of Arabidopsis Plant Architectures

With gratitude from the Editor-in-Chief of the Journal of Plant Research

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