EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation

Priya Ramakrishna; Paola Ruiz Duarte; Graham A. Rance; Martin Schubert; Vera Vordermaier; Lam Dai Vu; Evan Murphy; Amaya Vilches Barro; Kamal Swarup; Kamaljit Moirangthem; Bodil Jørgensen; Brigitte Van De Cotte; Tatsuaki Goh; Zhefeng Lin; Ute Voβ; Tom Beeckman; Malcolm J. Bennett; Kris Gevaert; Alexis Maizel; Ive De Smet

doi:10.1073/pnas.1820882116

EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation

Priya Ramakrishna, Paola Ruiz Duarte, Graham A. Rance, Martin Schubert, Vera Vordermaier, Lam Dai Vu, Evan Murphy, Amaya Vilches Barro, Kamal Swarup, Kamaljit Moirangthem, Bodil Jørgensen, Brigitte Van De Cotte, Tatsuaki Goh, Zhefeng Lin, Ute Voβ, Tom Beeckman, Malcolm J. Bennett, Kris Gevaert, Alexis Maizel, Ive De Smet^*

^*Corresponding author af dette arbejde

Planteglycobiologi

23 Citationer (Scopus)

23 Downloads (Pure)

Abstract

In plants, postembryonic formation of new organs helps shape the adult organism. This requires the tight regulation of when and where a new organ is formed and a coordination of the underlying cell divisions. To build a root system, new lateral roots are continuously developing, and this process requires the tight coordination of asymmetric cell division in adjacent pericycle cells. We identified EXPANSIN A1 (EXPA1) as a cell wall modifying enzyme controlling the divisions marking lateral root initiation. Loss of EXPA1 leads to defects in the first asymmetric pericycle cell divisions and the radial swelling of the pericycle during auxin-driven lateral root formation. We conclude that a localized radial expansion of adjacent pericycle cells is required to position the asymmetric cell divisions and generate a core of small daughter cells, which is a prerequisite for lateral root organogenesis.

Originalsprog	Engelsk
Tidsskrift	Proceedings of the National Academy of Sciences of the United States of America
Vol/bind	116
Udgave nummer	17
Sider (fra-til)	8597-8602
Antal sider	6
ISSN	0027-8424
DOI	https://doi.org/10.1073/pnas.1820882116
Status	Udgivet - 23 apr. 2019

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10.1073/pnas.1820882116Licens: CC BY-NC-ND

EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiationForlagets udgivne version, 1,26 MBLicens: CC BY-NC-ND

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Ramakrishna, P., Duarte, P. R., Rance, G. A., Schubert, M., Vordermaier, V., Vu, L. D., Murphy, E., Barro, A. V., Swarup, K., Moirangthem, K., Jørgensen, B., Van De Cotte, B., Goh, T., Lin, Z., Voβ, U., Beeckman, T., Bennett, M. J., Gevaert, K., Maizel, A., & De Smet, I. (2019). EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation. Proceedings of the National Academy of Sciences of the United States of America, 116(17), 8597-8602. https://doi.org/10.1073/pnas.1820882116

EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation. / Ramakrishna, Priya; Duarte, Paola Ruiz; Rance, Graham A. et al.

I: Proceedings of the National Academy of Sciences of the United States of America, Bind 116, Nr. 17, 23.04.2019, s. 8597-8602.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Ramakrishna, P, Duarte, PR, Rance, GA, Schubert, M, Vordermaier, V, Vu, LD, Murphy, E, Barro, AV, Swarup, K, Moirangthem, K, Jørgensen, B, Van De Cotte, B, Goh, T, Lin, Z, Voβ, U, Beeckman, T, Bennett, MJ, Gevaert, K, Maizel, A & De Smet, I 2019, 'EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation', Proceedings of the National Academy of Sciences of the United States of America, bind 116, nr. 17, s. 8597-8602. https://doi.org/10.1073/pnas.1820882116

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abstract = "In plants, postembryonic formation of new organs helps shape the adult organism. This requires the tight regulation of when and where a new organ is formed and a coordination of the underlying cell divisions. To build a root system, new lateral roots are continuously developing, and this process requires the tight coordination of asymmetric cell division in adjacent pericycle cells. We identified EXPANSIN A1 (EXPA1) as a cell wall modifying enzyme controlling the divisions marking lateral root initiation. Loss of EXPA1 leads to defects in the first asymmetric pericycle cell divisions and the radial swelling of the pericycle during auxin-driven lateral root formation. We conclude that a localized radial expansion of adjacent pericycle cells is required to position the asymmetric cell divisions and generate a core of small daughter cells, which is a prerequisite for lateral root organogenesis.",

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AU - Schubert, Martin

AU - Vordermaier, Vera

AU - Vu, Lam Dai

AU - Murphy, Evan

AU - Barro, Amaya Vilches

AU - Swarup, Kamal

AU - Moirangthem, Kamaljit

AU - Jørgensen, Bodil

AU - Van De Cotte, Brigitte

AU - Goh, Tatsuaki

AU - Lin, Zhefeng

AU - Voβ, Ute

AU - Beeckman, Tom

AU - Bennett, Malcolm J.

AU - Gevaert, Kris

AU - Maizel, Alexis

AU - De Smet, Ive

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KW - Arabidopsis thaliana

KW - Cell wall remodeling

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KW - Lateral root development

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EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation

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