![]() ![]() 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. Genetics including GWAS and QTL approaches identify genomic regions controlling this key root trait. Furthermore, we show that increased pearl millet primary root growth is correlated with increased early water stress tolerance in field conditions. Using crop modelling, we demonstrate that early drought stress is an important constraint in agrosystems in the Sahel where pearl millet was domesticated. Pearl millet’s early root system features a single fast-growing primary root which we hypothesize is an adaptation to the Sahelian climate. 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. Seedling root traits impact plant establishment under challenging environments. ![]()
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