Nitrate Transporter 2 () Family Genes, Identification, and Their Potential Functions in Abiotic Stress Tolerance.

Nitrate transporter 2 (NRT2) proteins play vital roles in both nitrate (NO) uptake and translocation as well as abiotic stress responses in plants. However, little is known about the gene family in . In this study, 14 were identified in the genome. The family members contain the PLN00028 and MATE_like superfamily domains. -element analysis indicated that regulatory elements related to stress responses are abundant in the promoter sequences of genes. expression was increased after drought stress, and and expression were significantly upregulated after salt stress. Furthermore, protein interaction predictions suggested that homologs of BrNRT2.3, BrNRT2.1, and BrNRT2.8 in may interact with the known stress-regulating proteins AtNRT1.1, AtNRT1.5, and AtNRT1.8. In conclusion, we suggest that , and have the greatest potential for inducing abiotic stress tolerance. Our findings will aid future studies of the biological functions of family genes.