Genetic Control of Surface Curvature

Nath, Utpal; Crawford, Brian; Carpenter, Rosemary; Coen, Enrico

doi:10.1126/science.1079354

Cited by 676 publications

(727 citation statements)

References 22 publications

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“…Free non-Euclidean thin elastic sheets arise in a variety of physical [1,3,8] and biological [2,11,33] systems. The morphology of these sheets is usually modeled as the equilibrium configurations for an appropriate elastic energy.…”

Section: Discussionmentioning

confidence: 99%

“…The differential growth of thin elastic sheets can generate highly nontrivial configurations such as the multiple generation of waves along the edge of a torn elastic sheet [1] and the wrinkled patterns on leaves [2]. Recently, environmentally responsive gel disks of uniform thickness have been created in the laboratory that mimic this type of growth by differentially shrinking in the radial direction when thermally activated in a hot water bath [3].…”

Section: Introductionmentioning

confidence: 99%

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Shape selection in non-Euclidean plates

Gemmer

Venkataramani

2011

Physica D: Nonlinear Phenomena

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We investigate isometric immersions of disks with constant negative curvature into R 3 , and the minimizers for the bending energy, i.e. the L 2 norm of the principal curvatures over the class of W 2,2 isometric immersions. We show the existence of smooth immersions of arbitrarily large geodesic balls in H 2 into R 3 . In elucidating the connection between these immersions and the non-existence/singularity results of Hilbert and Amsler, we obtain a lower bound for the L ∞ norm of the principal curvatures for such smooth isometric immersions. We also construct piecewise smooth isometric immersions that have a periodic profile, are globally W 2,2 , and numerically have lower bending energy than their smooth counterparts. The number of periods in these configurations is set by the condition that the principal curvatures of the surface remain finite and grow approximately exponentially with the radius of the disc. We discuss the implications of our results on recent experiments on the mechanics of non-Euclidean plates.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Shape selection in non-Euclidean plates

Gemmer

Venkataramani

2011

Physica D: Nonlinear Phenomena

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“…In cin mutant of Antirrhinum, the leaf margin is rumpled as a result of the slower arrest of cell divisions at the leaf margins relative to the middle of the leaf, and a comparable phenotype is seen in jaw-D mutation of Arabidopsis [29,30]. In both cases, TCP-domain genes [31] and regulation of their expressions are responsible for the development of flat and curved leaf surface.…”

Section: Wps1 Could Be a Downstream Component In The B Function Durinmentioning

confidence: 99%

Wrinkled petals and stamens 1, is required for the morphogenesis of petals and stamens in Lotus japonicus

et al. 2006

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Although much progress has been made in understanding how floral organ identity is determined during the floral development, less is known about how floral organ is elaborated in the late floral developmental stages. Here we describe a novel floral mutant, wrinkled petals and stamens1 (wps1), which shows defects in the development of petals and stamens. Genetic analysis indicates that wps1 mutant is corresponding to a single recessive locus at the long arm of chromosome 3. The early development of floral organs in wps1 mutant is similar to that in wild type, and the malfunction of the mutant commences in late developmental stages, displaying a defect on the appearance of petals and stamens. In the mature flower, petals and stamen filaments in the mutant are wrinkled or folded, and the cellular morphology under L1 layer of petals and stamen filaments is abnormal. It is found that the expression patterns of floral organ identity genes are not affected in wps1 mutants compared with that of wild type, consistent with the unaltered development of all floral organs. Furthermore, the identities of epidermal cells in different type of petals are maintained. The histological analysis shows that in wps1 flowers all petals are irregularly folded, and there are knotted structures in the petals, while the shape and arrangement of inner cells are malformed and unorganized. Based on these results, we propose that Wps1 acts downstream to the class B floral organ identity genes, and functions to modulate the cellular differentiation during the late flower developmental stages.

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“…LA encodes a transcription factor from the TCP family that contains a miR319-binding site [9,73]. Ori et al [19] found that the reduced sensitivity to miR319 resulted in elevated LA expression in very young leaf primordia and accelerated differentiation of leaf margins.…”

Section: Transgenic Analysis In Exploring Mirnas Functionmentioning

confidence: 99%

MicroRNAs in tomato plants

Zuo

Wang

Liu

et al. 2011

Sci. China Life Sci.

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MicroRNAs (miRNAs) are a specialized class of small silencing RNAs that regulate gene expression in eukaryotes. In plants, miRNAs negatively regulate target mRNAs containing a highly complementary sequence by either mRNA cleavage or translational repression. As a model plant to study fleshy fruit ripening, miRNA studies in tomato have made great progress recently. MiRNAs were predicted to be involved in nearly all biological processes in tomato, particularly development, differentiation, and biotic and abiotic stress responses. Surprisingly, several miRNAs were verified to be involved in tomato fruit ripening and senescence. Recent studies suggest that miRNAs are related to host-virus interactions, which raises the possibility that miRNAs can be used as diagnostic markers for response to virus infection in tomato plants. In this review, we summarize our current knowledge systematically and advance future directions for miRNA research in tomato. microRNAs, tomato, research methods, target gene prediction, functional analysis

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Genetic Control of Surface Curvature

Cited by 676 publications

References 22 publications

Shape selection in non-Euclidean plates

Shape selection in non-Euclidean plates

Wrinkled petals and stamens 1, is required for the morphogenesis of petals and stamens in Lotus japonicus

MicroRNAs in tomato plants

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