Microtubule-based perception of mechanical conflicts controls plant organ morphogenesis.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35138892.
- Also identified by DOI 10.1126/sciadv.abm4974 and PMC identifier 8827652.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Precise coordination between cells and tissues is essential for differential growth in plants. During lateral root formation in <i>Arabidopsis thaliana</i>, the endodermis is actively remodeled to allow outgrowth of the new organ. Here, we show that microtubule arrays facing lateral root founder cells display a higher order compared to arrays on the opposite side of the same cell, and this asymmetry is required for endodermal remodeling and lateral root initiation. We identify that MICROTUBULE ASSOCIATED PROTEIN 70-5 (MAP70-5) is necessary for the establishment of this spatially defined microtubule organization and endodermis remodeling and thus contributes to lateral root morphogenesis. We propose that MAP70-5 and cortical microtubule arrays in the endodermis integrate the mechanical signals generated by lateral root outgrowth, facilitating the channeling of organogenesis.