Periodic stripe patterns are ubiquitous in living organisms, yet the underlying developmental processes are complex and difficult to disentangle. We describe a synthetic genetic circuit that couples cell density and motility. This system enabled programmed Escherichia coli cells to form periodic stripes of high and low cell densities sequentially and autonomously. Theoretical and experimental analyses reveal that the spatial structure arises from a recurrent aggregation process at the front of the continuously expanding cell population. The number of stripes formed could be tuned by modulating the basal expression of a single gene. The results establish motility control as a simple route to establishing recurrent structures without requiring an extrinsic pacemaker.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.1209042 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
How the tulip breaking virus creates striped tulips.
Commun Biol
January 2025
Department of Mathematical and Statistical Sciences, Faculty of Science, University of Alberta, Edmonton, AB, Canada.
The beauty of tulips has enchanted mankind for centuries. The striped variety has attracted particular attention for its intricate and unpredictable patterns. A good understanding of the mechanism driving the striped pattern formation of broken tulips has been missing since the 17th century.
View Article and Find Full Text PDFStripe Noise Removal in Blazed Grating Generation for Electrically Tunable Beam Deflector.
Materials (Basel)
January 2025
Department of Information Display, Kyung Hee University, Seoul 02447, Republic of Korea.
In this paper, we demonstrate a blazed phase grating to achieve tunable beam steering and propose a novel algorithm to reduce the stripe noise in wrapped phase. To control the diffraction angle to steer light to the desired direction, an electrically tunable transmission-type beam deflector based on liquid crystals is introduced, and electric fields are applied to the patterned indium tin oxide electrodes to change its phase retardation. Two different 2π phase-wrapping methods are applied to obtain various diffraction angles within the minimum cell-gap, and the method of equal interval of phase achieves a worthwhile diffraction efficiency compared to the methods based on equal interval of diffraction angle.
View Article and Find Full Text PDFRe-Examination Characterization and Screening of Stripe Rust Resistance Gene of Wheat Gene Family Based on the Transcriptome in Xinchun 32.
Int J Mol Sci
January 2025
Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of the Xinjiang Uygur Autonomous Region, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China.
Pathogenesis-related protein-1 (PR1) encodes a water-soluble protein produced in plants after pathogen infection or abiotic stimulation. It plays a crucial role in plant-induced resistance by attacking pathogens, degrading cell wall macromolecules and pathogen toxins, and inhibiting the binding of viral coat proteins to plant receptor molecules. Compared to model plants, the mechanism of action of PR1 in wheat remains underexplored.
View Article and Find Full Text PDFIdentification and expression analysis of P-type ATPase IIIA subfamily in Puccinia Striiformis f. sp. tritici.
BMC Genomics
January 2025
College of Plant Protection, Gansu Agricultural University, Lanzhou, 730070, China.
Background: Puccinia striiformis f. sp. tritici (Pst) causes wheat stripe (yellow) rust disease, which is one of the most destructive diseases affecting wheat worldwide.
View Article and Find Full Text PDFSuperconductor-Insulator Transition Induced by Precise Subtripled Vapor Chemical Gating.
J Am Chem Soc
January 2025
State Key Laboratory of Precision and Intelligent Chemistry, CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
Recent progress in superconductor-insulator transition has shed light on the intermediate metallic state with unique electronic inhomogeneity. The microscopic model, suggesting that carrier spatial distribution plays a decisive role in the intermediate state, has been instrumental in understanding the quantum transition. However, the narrow carrier density window in which the intermediate state exists necessitates precise control of the gate dielectric layer, presenting a challenge to in situ map the carrier spatial distribution.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!