Publications by authors named "O G Kogan"
Tunable intracellular transport on converging microtubule morphologies.
Biophys Rep (N Y)
September 2024
A common type of cytoskeletal morphology involves multiple microtubules converging with their minus ends at the microtubule organizing center (MTOC). The cargo-motor complex will experience ballistic transport when bound to microtubules or diffusive transport when unbound. This machinery allows for sequestering and subsequent dispersal of dynein-transported cargo.
View Article and Find Full Text PDFWe investigate the effects of delayed interactions in a population of "swarmalators," generalizations of phase oscillators that both synchronize in time and swarm through space. We discover two steady collective states: a state in which swarmalators are essentially motionless in a disk arranged in a pseudocrystalline order, and a boiling state in which the swarmalators again form a disk, but now the swarmalators near the boundary perform boiling-like convective motions. These states are reminiscent of the beating clusters seen in photoactivated colloids and the living crystals of starfish embryos.
View Article and Find Full Text PDFWe examine a modification of the Fisher-Kolmogorov-Petrovsky-Piskunov (FKPP) process in which the diffusing substance requires a parent density field for reproduction. A biological example would be the density of diffusing spores (propagules) and the density of a stationary fungus (parent). The parent produces propagules at a certain rate, and the propagules turn into the parent substance at another rate.
View Article and Find Full Text PDFArticle Synopsis
- Dispersal is important for plants, but we still don’t fully understand how it affects their survival and spread.
- It’s tough to predict how seeds move around because it depends on many different factors like the environment and time.
- To really get better at studying seed dispersal, we need to consider all the different ways plants grow and change over time, and work together across different fields of science.
Article Synopsis
- Seed dispersal is crucial for plant survival and biodiversity, yet existing models often overlook individual variations and complex dynamics.
- Advances in research highlight the significance of understanding intraspecific variation in seed dispersal, which influences plant fitness and community dynamics.
- The authors recommend a shift in focus towards incorporating these variations into models to better predict responses to environmental changes and enhance biodiversity outcomes.