Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At1g64780	Ammonium transporter probably involved in ammonium uptake from the soil.	No verified direct reference in this release
Arabidopsis	At4g13510	High affinity ammonium transporter probably involved in ammonium uptake from the soil, long-distance transport to the shoots and re-uptake of apoplastic ammonium that derives from photorespiration in shoots.	No verified direct reference in this release
Rice	Os02g0620600	Ammonium transporter probably involved in ammonium uptake from the soil and ammonium uptake and retrieval in the vascular system.	No verified direct reference in this release