Quantitative phenotyping of leaf margins in three dimensions, demonstrated on KNOTTED and TCP trangenics in Arabidopsis

Armon, Shahaf; Yanai, Osnat; Ori, Naomi; Sharon, Eran

doi:10.1093/jxb/eru062

Cited by 13 publications

(10 citation statements)

References 33 publications

(39 reference statements)

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“…• Armon et al (2014) quantified the waviness and lobiness of leaves and suggested that leaf waviness is associated with normal curvature along the margins, whereas lobiness is associated with geodesic curvature.…”

Section: The Mechanics Of Leaf Initiationmentioning

confidence: 99%

Leaf development and morphogenesis

2014

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The development of plant leaves follows a common basic program that is flexible and is adjusted according to species, developmental stage and environmental circumstances. Leaves initiate from the flanks of the shoot apical meristem and develop into flat structures of variable sizes and forms. This process is regulated by plant hormones, transcriptional regulators and mechanical properties of the tissue. Here, we review recent advances in the understanding of how these factors modulate leaf development to yield a substantial diversity of leaf forms. We discuss these issues in the context of leaf initiation, the balance between morphogenesis and differentiation, and patterning of the leaf margin.

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Section: The Mechanics Of Leaf Initiationmentioning

confidence: 99%

Leaf development and morphogenesis

2014

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“…It turns out that it is a non-trivial task to be flat. It was shown that a negative feedback regulatory circuit is required to avoid a bumpy leaf structure, which is distinctively different from the smooth, flat leaves we are used to and take for granted (Armon et al 2014).…”

Section: Necessity For Regulationmentioning

confidence: 99%

Getting into shape: How do rod-like bacteria control their geometry?

Amir¹,

Teeffelen²

2014

Syst Synth Biol

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Rod-like bacteria maintain their cylindrical shapes with remarkable precision during growth. However, they are also capable to adapt their shapes to external forces and constraints, for example by growing into narrow or curved confinements. Despite being one of the simplest morphologies, we are still far from a full understanding of how shape is robustly regulated, and how bacteria obtain their near-perfect cylindrical shapes with excellent precision. However, recent experimental and theoretical findings suggest that cell-wall geometry and mechanical stress play important roles in regulating cell shape in rod-like bacteria. We review our current understanding of the cell wall architecture and the growth dynamics, and discuss possible candidates for regulatory cues of shape regulation in the absence or presence of external constraints. Finally, we suggest further future experimental and theoretical directions which may help to shed light on this fundamental problem.

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“…[1][2][3][4][5] Experimental and theoretical research has been motivated by the availability of new stimuli-responsive materials and their patterning methods, 6-10 the desire to understand and mimic the mechanics of biological systems, 4,[11][12][13][14][15] and by advances in the development of theoretical models. [1][2][3][4][5] Experimental and theoretical research has been motivated by the availability of new stimuli-responsive materials and their patterning methods, 6-10 the desire to understand and mimic the mechanics of biological systems, 4,[11][12][13][14][15] and by advances in the development of theoretical models.…”

Section: Introductionmentioning

confidence: 99%

Shape transformations of soft matter governed by bi-axial stresses

et al. 2015

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Rational design of the programmable soft matter requires understanding of the effect of a complex metric on shape transformations of thin non-Euclidean sheets. In the present work, we explored experimentally and using simulations how simultaneous or consecutive application of two orthogonal perturbations to thin patterned stimuli-responsive hydrogel sheets affects their three-dimensional shape transformations. The final shape of the sheet is governed by the metric, but not the order, in which the perturbations are applied to the system, and is determined by the competition of small-scale bidirectional stresses. In addition, a new, unexpected transition from a planar state to an equilibrium helical shape of the hydrogel sheet is observed via a mechanism that is yet to be explained.

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Quantitative phenotyping of leaf margins in three dimensions, demonstrated on KNOTTED and TCP trangenics in Arabidopsis

Abstract: SummaryThree-dimensional geometry of leaf margins is an important shape characteristic to distinguish different leaf phenotypes. Novel geometrical methods were defined, measured, and used to quantify waviness and lobiness of leaves.

Cited by 13 publications

References 33 publications

Leaf development and morphogenesis

Leaf development and morphogenesis

Getting into shape: How do rod-like bacteria control their geometry?

Shape transformations of soft matter governed by bi-axial stresses

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