Journal
SCIENCE ADVANCES
Volume 8, Issue 6, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abm4974
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Funding
- Swiss National Science Foundation (Schweizerischer Nationalfonds zur Forderung der wissenschaftlichen Forschung) [PP00P3_157524, 316030_164086, 310030_197568]
- Netherlands Organization for Scientific Research (Nederlandse Organisatie voor Wetenschappelijk Onderzoek) [NWO 864.13.008]
- University of Neuchatel
- Forschungskredit from the University of Zurich [FK19-112]
- Deutsche Forschungsgemeinschaft [FOR2581]
- Boehringer Ingelheim Foundation
- Consejo Nacional de Ciencia y Tecnologia of Mexico (CONACYT) [769058, 740701]
- Ministry of Science, Research and the Arts Baden-Wurttemberg (MWK)
- German Research Foundation (DFG) [INST 35/1314-1 FUGG, INST 35/1503-1 FUGG]
- Swiss National Science Foundation (SNF) [316030_164086, 310030_197568, PP00P3_157524] Funding Source: Swiss National Science Foundation (SNF)
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Precise coordination between cells and tissues is essential for differential growth in plants. The asymmetry of microtubule arrays in the endodermis and the remodeling of the endodermis are necessary for lateral root initiation. MAP70-5 and cortical microtubule arrays in the endodermis integrate mechanical signals and facilitate lateral root morphogenesis.
Precise coordination between cells and tissues is essential for differential growth in plants. During lateral root formation in Arabidopsis thaliana, 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.
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