KOICHI FUJIMOTO
Last Updated :2023/11/02
- Affiliations, Positions
- Hiroshima University, Full Professor
- Web Site
- E-mail
- kfjmt
hiroshima-u.ac.jp
- Self-introduction
- Theoretical study (mathematical modeling and data analysis) of evolving multi-level dynamics (gene expression, shape, and behaviors) in plants, animals, and microbes.
Basic Information
Academic Degrees
- The University of Tokyo
- The University of Tokyo
- The University of Tokyo
Research Keywords
- symmetry
- fluctuation
- morphogenesis
- mechanobiology
- flower
Educational Activity
Course in Charge
- 2023, Liberal Arts Education Program1, 3Term, Linear AlgebraII
- 2023, Undergraduate Education, First Semester, Special Study of Mathematics and Informatics for Graduation
- 2023, Undergraduate Education, Second Semester, Special Study of Mathematics and Informatics for Graduation
- 2023, Graduate Education (Master's Program) , 3Term, Mathematical Biology
Research Activities
Academic Papers
- Patterned proliferation orients tissue-wide stress to control root vascular symmetry in Arabidopsis, Current Biology, 33(5), 886-898.e8, 202303
- GRAS transcription factors regulate cell division planes in moss overriding the default rule., Proceedings of the National Academy of Sciences of the United States of America, 120(4), e2210632120, 20230124
- Neural mechanism of experience-dependent sensory gain control in C. elegans, Neuroscience Research, 202301
- Collective Cell Movement under Cell-Scale Tension Gradient at Tissue Interface, Journal of the Physical Society of Japan, 91(5), 20220515
- Traveling wave of inflammatory response to regulate the expansion or shrinkage of skin erythema., PloS one, 17(2), e0263049, 2022
- Polymorphism in the symmetries of gastric pouch arrangements in the sea anemone D. lineata., Zoological letters, 7(1), 12-12, 20210906
- Polarity Fluctuation Inhibition by Memory in Collective Cell Motion, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 90(5), 202105
- Rotation angle of stem cell division plane controls spiral phyllotaxis in mosses., Journal of plant research, 134(3), 457-473, 202105
- Tissue growth constrains root organ outlines into an isometrically scalable shape., Development (Cambridge, England), 148(4), 20210226
- A Mechanical Instability in Planar Epithelial Monolayers Leads to Cell Extrusion., Biophysical journal, 118(10), 2549-2560, 20200519
- Perianth Phyllotaxis Is Polymorphic in the Basal Eudicot Anemone and Eranthis Species, Frontiers in Ecology and Evolution, 8, 20200327
- A design principle for floral organ number and arrangement in flowers with bilateral symmetry., Development (Cambridge, England), 147(3), 20200204
- Crowding-Boosting Polarity and Motion Order of Cells, Proceedings of the Symposium on Simulation of Traffic Flow, 25, 21-24, 201912
- Optimal Scaling of Critical Size for Metamorphosis in the Genus Drosophila., iScience, 20, 348-358, 20191025
- Cell Motion Alignment as a Polarity Memory Effect, Journal of the Physical Society of Japan, 88(10), 103801-103801, 20191015
- Curved surface geometry-induced topological change of an excitable planar wavefront., Chaos (Woodbury, N.Y.), 29(9), 093120-093120, 201909
- Lateral Inhibition by a Peptide Hormone-Receptor Cascade during Arabidopsis Lateral Root Founder Cell Formation., Developmental cell, 48(1), 64-75, 20190107
- Cell Migration driven by Receptor Density Polarity of Cell-Matrix Adhesion, Proseeding of the Symposium on Simulation of Traffic Flow, 24, 5-8, 201812
- Competition for Space Is Controlled by Apoptosis-Induced Change of Local Epithelial Topology., Current biology : CB, 28(13), 2115-2128, 20180709
- A quantitative study of the diversity of stripe-forming processes in an arthropod cell-based field undergoing axis formation and growth., Developmental biology, 437(2), 84-104, 20180515
- Spiral phyllotaxis underlies constrained variation in Anemone (Ranunculaceae) tepal arrangement., Journal of plant research, 131(3), 459-468, 201805
- Plant-inspired pipettes., Journal of the Royal Society, Interface, 15(140), 201803
- Mouse spermatozoa with higher fertilization rates have thinner nuclei., PeerJ, 5, e3913, 2017
- Inference of Cell Mechanics in Heterogeneous Epithelial Tissue Based on Multivariate Clone Shape Quantification., Frontiers in cell and developmental biology, 5, 68-68, 2017
- Stochastic occurrence of trimery from pentamery in floral phyllotaxis of Anemone (Ranunculaceae), Acta Societatis Botanicorum Poloniae, 85(4), 201612
- Relationship between the species-representative phenotype and intraspecific variation in Ranunculaceae floral organ and Asteraceae flower numbers., Annals of botany, 117(5), 925-35, 201604
- Neural field dynamics for growing brains, Nonlinear Theory and Its Applications, IEICE, 7(2), 226-233, 2016
- A dynamical phyllotaxis model to determine floral organ number., PLoS computational biology, 11(5), e1004145, 201505
- A developmental basis for stochasticity in floral organ numbers., Frontiers in plant science, 5, 545-545, 2014
- Robustness of self-organizing chemoattractant field arising from precise pulse induction of its breakdown enzyme: a single-cell level analysis of PDE expression in Dictyostelium., Biophysical journal, 104(5), 1191-202, 20130305
- A design principle of group-level decision making in cell populations., PLoS computational biology, 9(6), e1003110, 2013
- COLLECTIVE DECISION-MAKING AND OSCILLATORY BEHAVIORS IN CELL POPULATIONS, ENGINEERING OF CHEMICAL COMPLEXITY, 11, 279-297, 2013
- Collective oscillations in developing cells: insights from simple systems., Development, growth & differentiation, 53(4), 503-17, 201105
- Inter-origin cooperativity of geminin action establishes an all-or-none switch for replication origin licensing., Genes to cells : devoted to molecular & cellular mechanisms, 16(4), 380-96, 201104
- The onset of collective behavior in social amoebae., Science (New York, N.Y.), 328(5981), 1021-5, 20100521
- Network evolution of body plans., PloS one, 3(7), e2772, 20080723
- Emergence of multi-time scales in coupled oscillators with plastic frequencies, Europhysics Letters (EPL), 78(2), 20004, 200704
- Relation between Adaptation and Irreversible Circulation in Bacteria Chemotaxis, Progress of Theoretical Physics Supplement, 161(161), 251-254, 2006
- Cross talking of network motifs in gene regulation that generates temporal pulses and spatial stripes., Genes to cells : devoted to molecular & cellular mechanisms, 10(11), 1025-1038, 200511
- Noisy signal amplification in ultrasensitive signal transduction., Proceedings of the National Academy of Sciences of the United States of America, 102(2), 331-336, 20050101
- Convective instability with time scale translation of the transmitted fluctuation, Physica D: Nonlinear Phenomena, 196(1-2), 67-89, 200409
- Bifurcation cascade as chaotic itinerancy with multiple time scales., Chaos (Woodbury, N.Y.), 13(3), 1041-1056, 200309
- How fast elements can affect slow dynamics, Physica D: Nonlinear Phenomena, 180(1-2), 1-16, 200306
- Sensitive boundary condition dependence of noise-sustained structure., Physical Review E, 63(3 Pt 2), 036218, 200103
- Noise-induced input dependence in a convectively unstable dynamical system, Physica D: Nonlinear Phenomena, 129(3-4), 203-222, 199905