Microtubule self-organisation during seed germination in Arabidopsis.

ABSTRACT:

Background

Upon water uptake and release of seed dormancy, embryonic plant cells expand, while being mechanically constrained by the seed coat. Cortical microtubules (CMTs) are key players of cell elongation in plants: their anisotropic orientation channels the axis of cell elongation through the guidance of oriented deposition of load-bearing cellulose microfibrils in the cell wall. Interestingly, CMTs align with tensile stress, and consistently, they reorient upon compressive stress in growing hypocotyls. How CMTs first organise in germinating embryos is unknown, and their relation with mechanical stress has not been investigated at such an early developing stage.

Results

Here, we analysed CMT dynamics in dormant and non-dormant Arabidopsis seeds by microscopy of fluoresce

SUBMITTER: Yan H 

PROVIDER: S-EPMC7191766 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature