Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At3g19490	May act as a Na⁺/H⁺ antiporter that exports Na⁺ in exchange for external protons.	Decreased capacity for sodium export out of Arabidopsis chloroplasts impairs salt tolerance, photosynthesis and plant performance.; 2014; DOI: 10.1111/tpj.12501; PMID: 24617758; https://pubmed.ncbi.nlm.nih.gov/24617758/
Arabidopsis	At1g49810	Na(+)/H(+) antiporter that extrudes sodium in exchange for external protons.	No verified direct reference in this release