Genome-wide identification and expression analysis of RsNRT gene family reveals their potential roles in response to low-nitrogen condition in radish (Raphanus sativus L.)

•In all, 39 RsNRT genes are systematically identified at genome-wide level in radish.•A range of RsNRTs exhibit significant differential expression under abiotic stresses.•RsNRT1.1a may play a critical role in root NO3− uptake under low-nitrogen condition.