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April 4th, 2025
Version: 4
Akita-Prefectual University
plant biology
biorxiv

Agent-Based Simulation of Cortical Microtubule Band Movement in the Arabidopsis Zygote

Nonoyama, T.Open in Google Scholar•Kang, Z.Open in Google Scholar•Matsumoto, H.Open in Google Scholar•Nakagawa, S.Open in Google Scholar•Ueda, M.Open in Google Scholar•Tsugawa, S.Open in Google Scholar

Arabidopsis thaliana zygotes form a circumferential cortical microtubule (CMT) band that moves upward along the longitudinal axis of the cylindrical cell; however, how and why this CMT band moves remain unknown. Based on several recently proposed descriptive feedback mechanisms of CMT reorientation, we hypothesized that a directional cue (DC) changes CMT orientation. We constructed an agent-based simulation model with a DC to observe what happens during CMT formation using different parameters. We determined that the output CMT band can become larger than the input DC zone and identified two types of self-organization processes depending on the parameters used. Furthermore, using well-defined parameters that form a static CMT band, we artificially changed the position of the input DC zone, revealing that CMT band movement requires a DC to move at an appropriate speed.

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