Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At1g32450	Low-affinity proton-dependent bidirectional nitrate transporter.	Mutation of the Arabidopsis NRT1.5 nitrate transporter causes defective root-to-shoot nitrate transport.; 2008; DOI: 10.1105/tpc.108.060244; PMID: 18780802; https://pubmed.ncbi.nlm.nih.gov/18780802/
Arabidopsis	At4g21680	Low-affinity nitrate transporter.	The Arabidopsis nitrate transporter NRT1.8 functions in nitrate removal from the xylem sap and mediates cadmium tolerance.; 2010; DOI: 10.1105/tpc.110.075242; PMID: 20501909; https://pubmed.ncbi.nlm.nih.gov/20501909/
Arabidopsis	At5g19640	Protein NRT1/ PTR FAMILY 7.1.	No verified direct reference in this release
Arabidopsis	At3g54140	Peptide transporter.	AtPTR1, a plasma membrane peptide transporter expressed during seed germination and in vascular tissue of Arabidopsis.; 2004; DOI: 10.1111/j.1365-313x.2004.02224.x; PMID: 15500465; https://pubmed.ncbi.nlm.nih.gov/15500465/ | AtPTR1 and AtPTR5 transport dipeptides in planta.; 2008; DOI: 10.1104/pp.108.123844; PMID: 18753286; https://pubmed.ncbi.nlm.nih.gov/18753286/
Arabidopsis	At2g02040	Peptide transporter.	No verified direct reference in this release