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Characterization of pearl millet root architecture and anatomy reveals three types of lateral roots

Passot, Sixtine; Gnacko, Fatoumata; Moukouanga, Daniel; Lucas, Mikaël; Guyomarc’h, Soazig; Ortega, Beatriz Moreno; Atkinson, Jonathan A.; Belko, Marème N.; Bennett, Malcolm J.; Gantet, Pascal; Wells, Darren M.; Guédon, Yann; Vigouroux, Yves; Verdeil, Jean-Luc; Muller, Bertrand; Laplaze, Laurent

Authors

Sixtine Passot

Fatoumata Gnacko

Daniel Moukouanga

Mikaël Lucas

Soazig Guyomarc’h

Beatriz Moreno Ortega

JONATHAN ATKINSON JONATHAN.ATKINSON@NOTTINGHAM.AC.UK
Future Food Beacon:Technologist in Phenomics

Marème N. Belko

Pascal Gantet

DARREN WELLS DARREN.WELLS@NOTTINGHAM.AC.UK
Principal Research Fellow

Yann Guédon

Yves Vigouroux

Jean-Luc Verdeil

Bertrand Muller

Laurent Laplaze



Abstract

© 2016 Passot, Gnacko, Moukouanga, Lucas, Guyomarc’h, Moreno Ortega, Atkinson, Belko, Bennett, Gantet, Wells, Guédon, Vigouroux, Verdeil, Muller and Laplaze. Pearl millet plays an important role for food security in arid regions of Africa and India. Nevertheless, it is considered an orphan crop as it lags far behind other cereals in terms of genetic improvement efforts. Breeding pearl millet varieties with improved root traits promises to deliver benefits in water and nutrient acquisition. Here, we characterize early pearl millet root system development using several different root phenotyping approaches that include rhizotrons and microCT. We report that early stage pearl millet root system development is characterized by a fast growing primary root that quickly colonizes deeper soil horizons. We also describe root anatomical studies that revealed three distinct types of lateral roots that form on both primary roots and crown roots. Finally, we detected significant variation for two root architectural traits, primary root lenght and lateral root density, in pearl millet inbred lines. This study provides the basis for subsequent genetic experiments to identify loci associated with interesting early root development traits in this important cereal.

Citation

Passot, S., Gnacko, F., Moukouanga, D., Lucas, M., Guyomarc’h, S., Ortega, B. M., …Laplaze, L. (2016). Characterization of pearl millet root architecture and anatomy reveals three types of lateral roots. Frontiers in Plant Science, 7(June2016), https://doi.org/10.3389/fpls.2016.00829

Journal Article Type Article
Acceptance Date May 26, 2016
Online Publication Date Jun 13, 2016
Publication Date Jun 13, 2016
Deposit Date Jul 25, 2016
Publicly Available Date Jul 25, 2016
Journal Frontiers in Plant Science
Electronic ISSN 1664-462X
Publisher Frontiers Media
Peer Reviewed Peer Reviewed
Volume 7
Issue June2016
DOI https://doi.org/10.3389/fpls.2016.00829
Public URL http://eprints.nottingham.ac.uk/id/eprint/35414
Publisher URL http://journal.frontiersin.org/article/10.3389/fpls.2016.00829/full
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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