An atlas of Brachypodium distachyon lateral root development.
| Autor: | de Jesus Vieira Teixeira C; Laboratory of Molecular and Cell Biology, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland., Bellande K; Laboratory of Molecular and Cell Biology, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland.; IPSiM, University of Montpellier, CNRS, INRAE, Institut Agro, 34060 Montpellier, France., van der Schuren A; Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland., O'Connor D; Sainsbury Lab, University of Cambridge, CB2 1LR Cambridge, UK., Hardtke CS; Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland., Vermeer JEM; Laboratory of Molecular and Cell Biology, Institute of Biology, University of Neuchâtel, 2000 Neuchâtel, Switzerland. |
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| Jazyk: | angličtina |
| Zdroj: | Biology open [Biol Open] 2024 Sep 15; Vol. 13 (9). Date of Electronic Publication: 2024 Sep 02. |
| DOI: | 10.1242/bio.060531 |
| Abstrakt: | The root system of plants is a vital part for successful development and adaptation to different soil types and environments. A major determinant of the shape of a plant root system is the formation of lateral roots, allowing for expansion of the root system. Arabidopsis thaliana, with its simple root anatomy, has been extensively studied to reveal the genetic program underlying root branching. However, to get a more general understanding of lateral root development, comparative studies in species with a more complex root anatomy are required. Here, by combining optimized clearing methods and histology, we describe an atlas of lateral root development in Brachypodium distachyon, a wild, temperate grass species. We show that lateral roots initiate from enlarged phloem pole pericycle cells and that the overlying endodermis reactivates its cell cycle and eventually forms the root cap. In addition, auxin signaling reported by the DR5 reporter was not detected in the phloem pole pericycle cells or young primordia. In contrast, auxin signaling was activated in the overlying cortical cell layers, including the exodermis. Thus, Brachypodium is a valuable model to investigate how signaling pathways and cellular responses have been repurposed to facilitate lateral root organogenesis. Competing Interests: Competing interests The authors declare no competing or financial interests. (© 2024. Published by The Company of Biologists Ltd.) |
| Databáze: | MEDLINE |
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