Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At3g56970	Transcription factor ORG2.	No verified direct reference in this release
Arabidopsis	At2g41240	Plays a role in metal homeostasis.	Expression differences for genes involved in lignin, glutathione and sulphate metabolism in response to cadmium in Arabidopsis thaliana and the related Zn/Cd-hyperaccumulator Thlaspi caerulescens.; 2008; DOI: 10.1111/j.1365-3040.2007.01764.x; PMID: 18088336; https://pubmed.ncbi.nlm.nih.gov/18088336/
Arabidopsis	At3g56980	Transcription factor ORG3.	No verified direct reference in this release
Rice	UniProt: A2WZ60	Transcription activator that binds to the DNA motif 5'-CACGTGG-3' in the promoter of iron (Fe) deficiency-inducible genes as well as of genes involved in iron homeostasis, thus contributing to basal tolerance to iron deficiency, iron uptake from soil and iron transport, particularly during seed maturation and germination.	No verified direct reference in this release
Rice	Os01g0952800	Transcription activator that binds to the DNA motif 5'-CACGTGG-3' in the promoter of iron (Fe) deficiency-inducible genes as well as of genes involved in iron homeostasis, thus contributing to basal tolerance to iron deficiency, iron uptake from soil and iron transport, particularly during seed maturation and germination.	Isolation and characterization of IRO2, a novel iron-regulated bHLH transcription factor in graminaceous plants.; 2006; DOI: 10.1093/jxb/erl054; PMID: 16887895; https://pubmed.ncbi.nlm.nih.gov/16887895/ | The rice bHLH protein OsIRO2 is an essential regulator of the genes involved in Fe uptake under Fe-deficient conditions.; 2007; DOI: 10.1111/j.1365-313x.2007.03149.x; PMID: 17559517; https://pubmed.ncbi.nlm.nih.gov/17559517/ | Ethylene is involved in the regulation of iron homeostasis by regulating the expression of iron-acquisition-related genes in Oryza sativa.; 2011; DOI: 10.1093/jxb/erq301; PMID: 21112958; https://pubmed.ncbi.nlm.nih.gov/21112958/ | OsIRO2 is responsible for iron utilization in rice and improves growth and yield in calcareous soil.; 2011; DOI: 10.1007/s11103-011-9752-6; PMID: 21331630; https://pubmed.ncbi.nlm.nih.gov/21331630/ | Iron deficiency responses in rice roots.; 2014; DOI: 10.1186/s12284-014-0027-0; PMID: 26224556; https://pubmed.ncbi.nlm.nih.gov/26224556/