Carla de la Fuente
Author Response: Glutaredoxin regulation of primary root growth is associated with early drought stress tolerance in pearl millet
de la Fuente, Carla; Grondin, Alexandre; Sine, Bassirou; Debieu, Marilyne; Belin, Christophe; Hajjarpoor, Amir; Atkinson, Jonathan A.; Passot, Sixtine; Salson, Marine; Orjuela, Julie; Tranchant-Dubreuil, Christine; Brossier, Jean-Rémy; Steffen, Maxime; Morgado, Charlotte; Dinh, Hang Ngan; Pandey, Bipin K.; Darmau, Julie; Champion, Antony; Petitot, Anne-Sophie; Barrachina, Celia; Pratlong, Marine; Mounier, Thibault; Nakombo-Gbassault, Princia; Gantet, Pascal; Gangashetty, Prakash; Guédon, Yann; Vadez, Vincent; Reichheld, Jean-Philippe; Bennett, Malcolm J.; Kane, Ndjido; Guyomarc’h, Soazig; Wells, Darren M.; Vigouroux, Yves; Laplaze, Laurent
Authors
Alexandre Grondin
Bassirou Sine
Marilyne Debieu
Christophe Belin
Amir Hajjarpoor
JONATHAN ATKINSON JONATHAN.ATKINSON@NOTTINGHAM.AC.UK
Assistant Professor
Sixtine Passot
Marine Salson
Julie Orjuela
Christine Tranchant-Dubreuil
Jean-Rémy Brossier
Maxime Steffen
Charlotte Morgado
Hang Ngan Dinh
Dr. BIPIN PANDEY Bipin.Pandey@nottingham.ac.uk
Principal Research Fellow
Julie Darmau
Antony Champion
Anne-Sophie Petitot
Celia Barrachina
Marine Pratlong
Thibault Mounier
Princia Nakombo-Gbassault
Pascal Gantet
Prakash Gangashetty
Yann Guédon
Vincent Vadez
Jean-Philippe Reichheld
MALCOLM BENNETT malcolm.bennett@nottingham.ac.uk
Professor of Plant Science
Ndjido Kane
Soazig Guyomarc’h
DARREN WELLS DARREN.WELLS@NOTTINGHAM.AC.UK
Principal Research Fellow
Yves Vigouroux
Laurent Laplaze
Abstract
Seedling root traits impact plant establishment under challenging environments. Pearl millet is one of the most heat and drought tolerant cereal crops that provides a vital food source across the sub-Saharan Sahel region. Pearl millet’s early root system features a single fast-growing primary root which we hypothesize is an adaptation to the Sahelian climate. Using crop modelling, we demonstrate that early drought stress is an important constraint in agrosystems in the Sahel where pearl millet was domesticated. Furthermore, we show that increased pearl millet primary root growth is correlated with increased early water stress tolerance in field conditions. Genetics including GWAS and QTL approaches identify genomic regions controlling this key root trait. Combining gene expression data, re-sequencing and re-annotation of one of these genomic regions identified a glutaredoxin-encoding gene PgGRXC9 as the candidate stress resilience root growth regulator. Functional characterization of its closest Arabidopsis homolog AtROXY19 revealed a novel role for this glutaredoxin (GRX) gene clade in regulating cell elongation. In summary, our study suggests a conserved function for GRX genes in conferring root cell elongation and enhancing resilience of pearl millet to its Sahelian environment.
Citation
de la Fuente, C., Grondin, A., Sine, B., Debieu, M., Belin, C., Hajjarpoor, A., …Laplaze, L. Author Response: Glutaredoxin regulation of primary root growth is associated with early drought stress tolerance in pearl millet
Working Paper Type | Working Paper |
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Deposit Date | Feb 24, 2024 |
Publicly Available Date | Feb 26, 2024 |
Public URL | https://nottingham-repository.worktribe.com/output/29841991 |
Publisher URL | https://elifesciences.org/reviewed-preprints/86169v2/reviews |
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Author response: Glutaredoxin regulation of primary root growth
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
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