Accès ouvert

Reviewer #1 (Public Review): Glutaredoxin regulation of primary root growth confers early drought stress tolerance in pearl millet

Article scientifique 2023 Anglais

Résumé

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.

Citer ce document

Carla, d., Grondin, A., Sine, B., Debieu, M., Belin, C., Hajjarpoor, A., Atkinson, J., Passot, S., Salson, M., Julie, O., Tranchant‐Dubreuil, C., Brossier, J., Steffen, M., Morgado, C., Ngan, D., Pandey, B., Darmau, J., Antony, C., Petitot, A., Barrachina, C., Pratlong, M., Mounier, T., Gantet, P., Gangashetty, P., Guédon, Y., Vadez, V., Reichheld, J., Bennett, M., Kane, N., Guyomarc’h, S., Wells, D., Vigouroux, Y., Laplaze, L. (2023). Reviewer #1 (Public Review): Glutaredoxin regulation of primary root growth confers early drought stress tolerance in pearl millet. https://doi.org/10.7554/elife.86169.1.sa1

Accès au document

Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter

Voir l'article sur le site de la revue

Auteur(s)

de la Fuente Carla Alexandre Grondin Bassirou Sine Marilyne Debieu Christophe Belin Amir Hajjarpoor Jonathan A. Atkinson Sixtine Passot Marine Salson Orjuela Julie Christine Tranchant‐Dubreuil Jean-Rémy Brossier Maxime Steffen Charlotte Morgado Dinh Hang Ngan Bipin Kumar Pandey Julie Darmau Champion Antony Anne‐Sophie Petitot Célia Barrachina Marine Pratlong Thibault Mounier Pascal Gantet Prakash Gangashetty Yann Guédon Vincent Vadez Jean‐Philippe Reichheld Malcolm J. Bennett Ndjido Ardo Kane Soazig Guyomarc’h Darren M. Wells Yves Vigouroux Laurent Laplaze

Statistiques

Consultations : 1

Téléchargements : 0