A transient radial cortical microtubule array primes cell division in Arabidopsis.

ABSTRACT: Although the formation of new walls during plant cell division tends to follow maximal tensile stress direction, analyses of individual cells over time reveal a much more variable behavior. The origin of such variability as well as the exact role of interphasic microtubule behavior before cell division have remained mysterious so far. To approach this question, we took advantage of the Arabidopsis stem, where the tensile stress pattern is both highly anisotropic and stable. Although cortical microtubules (CMTs) generally align with maximal tensile stress, we detected a specific time window, ca. 3 h before cell division, where cells form a radial pattern of CMTs. This microtubule array organization preceded preprophase band (PPB) formation, a transient CMT array predicting the positi

SUBMITTER: Melogno I 

PROVIDER: S-EPMC11260093 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature