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Showing 1 to 20 of 122 for “"cuticle"”.
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Ant cuticle microsculpture: diversity, classification, evolution, and function
… chapters. The first chapter is a review of ant cuticle and microsculpture diversity as well as including analyses examining the evolution and lability of microsculpture traits. I then review the literature for functional hypotheses related to ant microsculpture. The second chapter explores the …
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Biochemical studies of enzymes in insect cuticle hardening
In insects, the cuticle provides protection against physical injury and water loss, rigidness for muscle attachment and mechanical support, and flexibility in inter-segmental and joint areas for mobility. As most insects undergo metamorphosis, they need to shred off old cuticle and synthesize new …
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The cuticle of the parasitic nematode, Nematospiroides dubius / Lesley Clare Hurley
Bibliography: leaves 155-193
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Feedback Regulation of Wnt Signaling by Naked Cuticle (Nkd) During Drosophila Embryogenesis
… and diabetes. In Drosophila, the naked cuticle (nkd) gene antagonizes the Wnt/beta -catenin signaling in every segment of the embryo. Nkd is a modular, evolutionarily conserved protein that uses an EF-hand motif and adjacent sequences to target the cytoplasmic Wnt signal transducer …
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Crystallographic texture of the arthropod cuticle using synchrotron wide angle X-ray diffraction
… these animals is referred to as exoskeleton or cuticle, and it covers the entire body of the animal. It has remarkable mechanical properties which provide structural support to the body, armor against loads that are externally imposed by predators. It also enables mobility through the formation …
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On the molecular pathways supporting the development of structurally coloured cuticle in Hibiscus trionum
… as iridescence). Further observations of the cuticle showed the presence of nano-scaled striations acting as a grating like surface responsible for the diffraction of light. Computational modelling, and existing knowledge in material physics, suggests that the development of such a structure …
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Micro- and nanoscale features of insect cuticle and their impacts on wetting, friction, and optical properties
The surface of insect cuticle is often modified to form various unique structures such as setae, microtrichia, nanopillars, sculpticells, or gratings. The adaptive roles of these cuticular architectures have become a recent area of interest, notably to serve as inspiration for the creation of novel …
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Characterisation of quiescin-sulfhydryl oxidase and nematode astacin mutants using functional studies in caenorhabditis elegans.
… elegans, the basement membrane and the cuticle. The cuticle of C. elegans, like other nematodes is composed largely of collagen-like proteins, with the trimeric collagenous proteins forming approximately 80% of the cuticle. Cuticle collagens are believed to be highly processed in a …
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Molecular biology of the entomopathogenic fungus Beauveria bassiana : insect-cuticle degrading enzymes and development of a new selection marker for fungal transformation
… both the strong evidence supporting the role of cuticle-degrading proteases (PR1 and PR2) as well as phospholipase B (PLB) in fungal pathogens and their correlations to virulence observed in either M. anisopliae or C. albicans, these genes were cloned from B. bassiana 252. Two PLB-encoding genes …
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Key roles of glutamate metabolism and cuticle permeability in the multifaceted defense response of the abscisic acid deficient sitiens tomato mutant against Botrytis cinerea
… ABA-deficiency in sitiens results in increased cuticle permeability which is also positively correlated with disease resistance. It was then hypothesized that a permeable cuticle can facilitate faster perception of putative elicitors released from the pathogen, or from the mechanical attempt of …
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The role of protein metal complexes in the mechanics of Mytilus californianus byssal threads
… (DOPA)-metal bonds in the protective thread cuticle (Chapter 5). Byssal threads are protein fibers, which mussels use to attach to various substrates at the seashore. These relatively stiff fibers have the ability to extend up to about 100 % strain, dissipating large amounts of mechanical …
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Body Size Regulation via BMP Signaling in <i>Caenorhabditis elegans</i>
… the course of our investigation, we identified cuticle collagen genes as hypodermal transcriptional targets of DBL-1 signaling that act as effectors of body size regulation. We have identified positive (col-41), negative (col-141, co-142), and dose-sensitive regulators (rol-6) of body size. In …
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Morphogenesis of Cuticle: Its Pigmentation and Deposition, the Role of Bursicon, and Changes in Fat Body Cells in the Adult Flesh Flies, Sarcophaga Bullata and Sarcophaga Argyrostoma (Diptera: Sarcophagidae)
Made available in DSpace on 2014-12-09T20:27:24Z (GMT). No. of bitstreams: 1 6812116.pdf: 4492317 bytes, checksum: 40d80eff7dbc33a9811a24d104accb12 (MD5) Previous issue date: 1968
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Diskriminierung textilrelevanter Tierhaare durch Fourieranalyse zweidimensionaler Oberflächenprofile
… is the detection of the edge heights of the cuticle scales. These are of particular significance for the differentiation of wool and speciality fibres. The approach pursued in this work is the analysis of two-dimensional fibre profiles, which potentially can be obtained in an automated …
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Microstructure and mechanical properties of the exoskeleton of the lobster Homarus americanus as an example of a biological composite material
… and mechanical properties using the cuticle or shell of the American lobster as a novel model material. The cuticle of the lobster Homarus americanus is a nano-composite material like most structural biological materials. It consists of a matrix of chitin-protein fibers associated …
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Characterization of acifluorfen selectivity mechanisms in tomato and related Lycopersicon species
… density, quantity of epicuticular wax and cuticle, and wax composition to acifluorfen tolerance was determined. There was no correlation between trichome density and acifluorfen tolerance or susceptibility, however, an inverse relationship between stomate density and tolerance was observed. …
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IDENTIFICATION OF ULTRASTRUCTURAL AND BIOCHEMICAL MARKERS OF FROST AVOIDANCE IN THE CUTICULAR LAYER OF CORN
… contrast, over the five-week field conditions, cuticle thickness increased in all genotypes. Genotype 256 had a significantly thinner cuticle (-0.25 μm) than the other genotypes indicating genotypic variation is accentuated under field conditions and sensitive lines may have a thinner cuticle. …
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Taphonomy of pigmentary colours in fossil insects
… for the striking colouration displayed in their cuticles. Although fossil insects are abundant and the patternings in their cuticles highly resemble those found in extant insects, these are commonly monotonal, especially in those insects preserved across deep geological time. Colouration …
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