Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g24715	Acts as a dual component transporter with NTR2.1.	High-affinity nitrate transport in roots of Arabidopsis depends on expression of the NAR2-like gene AtNRT3.1.; 2006; DOI: 10.1104/pp.105.074385; PMID: 16415212; https://pubmed.ncbi.nlm.nih.gov/16415212/
Arabidopsis	At5g50200	Acts as a dual component transporter with NTR2.1.	High-affinity nitrate transport in roots of Arabidopsis depends on expression of the NAR2-like gene AtNRT3.1.; 2006; DOI: 10.1104/pp.105.074385; PMID: 16415212; https://pubmed.ncbi.nlm.nih.gov/16415212/ | Characterization of a two-component high-affinity nitrate uptake system in Arabidopsis. Physiology and protein-protein interaction.; 2006; DOI: 10.1104/pp.106.085209; PMID: 17012411; https://pubmed.ncbi.nlm.nih.gov/17012411/ | Regulation of root nitrate uptake at the NRT2.1 protein level in Arabidopsis thaliana.; 2007; DOI: 10.1074/jbc.m700901200; PMID: 17573350; https://pubmed.ncbi.nlm.nih.gov/17573350/ | Nitrate signaling and the two component high affinity uptake system in Arabidopsis.; 2007; DOI: 10.4161/psb.2.4.3870; PMID: 19704673; https://pubmed.ncbi.nlm.nih.gov/19704673/
Rice	Os02g0595900	Acts as a dual component transporter with NTR2.1, NRT2.2 and NRT2.3.	Spatial expression and regulation of rice high-affinity nitrate transporters by nitrogen and carbon status.; 2011; DOI: 10.1093/jxb/erq403; PMID: 21220781; https://pubmed.ncbi.nlm.nih.gov/21220781/ | Rice OsNAR2.1 interacts with OsNRT2.1, OsNRT2.2 and OsNRT2.3a nitrate transporters to provide uptake over high and low concentration ranges.; 2011; DOI: 10.1111/j.1365-3040.2011.02335.x; PMID: 21486304; https://pubmed.ncbi.nlm.nih.gov/21486304/
Rice	Os04g0480200	Involved in nitrate transport.	No verified direct reference in this release