Related Experiment Video
Updated: Jul 23, 2026

08:22
Visualization of Caenorhabditis elegans Cuticular Structures Using the Lipophilic Vital Dye DiI
Published on: January 30, 2012
17.1K
Developmental genetics of cuticular micro- and nano-structures in insects
1Department of Biological Sciences, National University of Singapore, Singapore.
Current Opinion in Insect Science
|August 25, 2024
Summary
Insect cuticle morphogenesis involves common cellular themes like polyploidy and protein roles in chitin deposition. These findings offer insights for bioinspired design of micro- and nano-structures.
Area of Science:
- Developmental Biology
- Materials Science
- Biomimetics
Background:
- Insect cuticle displays diverse micro- and nano-structures.
- Research on cellular morphogenesis is limited to a few model systems.
Purpose of the Study:
- Revisit established models like bristle morphogenesis.
- Identify common cellular mechanisms across diverse cuticular structures.
Main Methods:
- Comparative analysis of cuticular structures across various insect taxa.
- Investigating the roles of precursor cell polyploidy, pigments, and proteins.
Main Results:
- Common themes in morphogenesis include precursor cell polyploidy.
- Pigments and cuticular proteins regulate chitin deposition spatially and temporally.
- The apical extracellular matrix shapes developing cuticular structures.
Conclusions:
- Emerging common themes provide a unified view of insect cuticle morphogenesis.
- Understanding these mechanisms can inspire bioinspired material design.
Related Concept Videos
Inheritance of Chromatin Structures
Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...
Genome Size and the Evolution of New Genes
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
Microbial Morphologies
Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
Evolutionary Processes in Microbes
Microbial evolution occurs rapidly due to short generation times and a variety of genetic processes, including horizontal gene transfer, mutation, recombination, and genetic drift. These mechanisms collectively enable microbes to adapt swiftly to changing environments.Horizontal gene transfer (HGT) allows genes to move between different species and occurs through three main mechanisms: conjugation, transformation, and transduction. Conjugation involves direct cell-to-cell contact for DNA...
Evolution of New Traits in Microbes
Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
Evolution of Microbial Genome
Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.

